List of historic mansions in the United States

Lavish mansions were built by some of the richest people in the United States before, during, and following the Gilded Age up until the outbreak of World War II.

These estates were raised by the nation's industrial, financial and commercial elite, who amassed great fortunes in era of expansion of the tobacco, railroad, steel, and oil industries coinciding with a lack of both governmental regulation and the absence of a personal income tax. The manor homes and city seats were designed by prominent architects of the day and decorated with antiquities, furniture, and works of art from the world over.

Many of the wealthy had undertaken grand tours of Europe, during which they admired the estates of the nobility. Seeing themselves as their American equivalent, they wished to emulate the old world dwellings on American soil, and spent extravagantly to do so, often seeking to one-up each other. Concentrations of such homes developed in the financial centers and resorts of the Northeast, the industrial heartland of the Upper Midwest, and in the rapidly expanding regions of the West Coast, with vacation homes also appearing prominently in Florida.

Alabama

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Tacon Barfield House	1901	Queen Anne	George Franklin Barber	Mobile	Today a private residence

Arizona

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Rosson House	1895	Queen Anne	George Franklin Barber	Phoenix	Today a historic house museum in Heritage Square

Arkansas

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Hornibrook House	1888	Queen Anne		Little Rock	Part of Governor's Mansion Historic District

California

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	David and Sarah Morey House	1890	Queen Anne		Redlands
	Thomas Douglas Stimson House	1891	Richardsonian Romanesque, Gothic Revival	Carroll H. Brown, E.D. Elliot	Los Angeles	Today, part of the Sisters of St. Joseph of Carondelet convent complex
	Lewis Leonard Bradbury House	1887	Queen Anne	Samuel Newsom and Joseph Cather Newsom	Los Angeles	Demolished in 1929
	Margaret E. Crocker Mansion	1886	Queen Anne	John Hall	Los Angeles	Demolished in 1908
	Rose Mansion	1888	Queen Anne	Curlett & Eissen	Los Angeles	Demolished in 1937
	Governor's Mansion-Gallatin house	1877	Second Empire	Nathaniel D. Goodell	Sacramento	Is the official residence of the governor of California since 1903
	Leland Stanford Mansion	1857	Second Empire	Seth Babson	Sacramento	Owned by the government of California	^[1]
more images	Ralston Hall	1864	Victorian-Italianate Villa	Henry Cleaveland	Belmont	Located on the campus of Notre Dame de Namur University	^[2]
more images	McDonald Mansion (also known as Mableton)	1877	Stick/Eastlake		Santa Rosa	The exterior was used in the filming of Walt Disney's Pollyanna	^[3]
	Linden Towers	1878	Gothic, Italianate and Second Empire	Laver & Curlett	San Francisco	Was built for James C Flood, was demolished in 1936.
more images	Mark Hopkins Mansion	1878	Gothic	Wright & Sanders	San Francisco	Destroyed by fire following the 1906 San Francisco earthquake	^[4]^[5]
	David B Colton Mansion	1872	Neo-classical	S. C. Bugbee & Son	San Francisco	Later bought by Collis Potter Huntington. Was destroyed in the 1906 San Francisco earthquake
	Leland Stanford Mansion	1876	Italianate	S. C. Bugbee & Son	San Francisco	Was destroyed in the 1906 San Francisco earthquake
more images	Charles Crocker Mansion	1877	Second Empire and Neo-classical	S. C. Bugbee & Son and Curlett & Cuthbertson	San Francisco	Destroyed during the 1906 San Francisco earthquake	^[6]
	William Henry Crocker Mansion	1888	Queen Anne	S. C. Bugbee & Son	San Francisco	Destroyed during the 1906 San Francisco earthquake
more images	James C. Flood Mansion	1886	Neo-classical	Augustus Laver; Willis Polk	San Francisco	Today, home of the Pacific-Union Club
	Haas-Lilienthal House	1886	Queen Anne	Peter Schmidt	San Francisco	Built for William Haas, today is a house museum
	Ashe/Crocker Mansion	1883	Queen Anne	Curlett & Cuthbertson	San Francisco	Built for Aimee Crocker (Charles Crocker's niece) and Richard Potter Ashe, it was badly damaged in the 1906 San Francisco earthquake and destroyed by fire in 1913
more images	Sarah Winchester House	1884	Queen Anne	Sarah Winchester	San Jose	Winchester did not use an architect and added on to the building in a haphazard fashion. Much of the house was lost in the 1906 San Francisco earthquake.	^[7]
more images	Carson Mansion	1886	Queen Anne	Samuel Newsom and Joseph Cather Newsom	Eureka	Built for William Carson, today is "Considered the most grand Victorian home in America."^[8]	^[9]
	Gamble House	1908	Bungalow in American Craftsman style of Arts and Crafts Movement	Greene & Greene	Pasadena	It was Doc's house in Back to the Future
more images	Huntington Residence	1909	Mediterranean Revival	Myron Hunt	San Marino	Former residence of Henry E. Huntington, now an art gallery.	^[10]
more images	Hearst Castle	Between 1919 and 1947	Spanish Colonial Revival, Mediterranean Revival	Julia Morgan	San Simeon	Built by William Randolph Hearst	^[7]
more images	Filoli	1915	Georgian Revival	Willis Polk	Woodside	Owned by the National Trust for Historic Preservation and open to the public	^[11]
more images	Carolands	1916	Beaux-Arts Classicism	Ernest Sanson	Hillsborough	Owned by the Carolands Foundation and open to the public	^[12]

Colorado

Name	Year built	Style	Architect	City	Notes	Ref.
Richthofen Castle	1887	Gothic Revival, Tudor Revival	Alexander Cazin Biscoe & Hewitt (1910 renovation) Jacques Benedict (1924 renovation)	Montclair, Denver	Built for Baron Walter von Richthofen	^[13]
The Molkery	1888	Germanic Castle	Alexander Cazin	Montclair, Denver	Built for Baron Walter von Richthofen, now the Montclair Civic Center	^[14]
Molly Brown House	1889	Richardsonian Romanesque, Queen Anne Revival	William A. Lang	Denver	Originally built for Isaac Large, purchased by J.J. Brown, later owned by Molly Brown
Ferguson-Gano House	1897		Theodore Davies Boal	Denver	Built for inventor, and socialite John Albert Ferguson, purchased by businessman George Gano
Grant–Humphreys Mansion	1902	Neoclassical	Theodore Davies Boal	Denver	Built for James Benton Grant, later owned by A.E. Humphreys
Redstone Castle	1903	Stick style	Theodore Davies Boal	Redstone	Built for John Cleveland Oswood, today is a hotel and museum.
Crawford Hill Mansion	1906	French Renaissance Revival	Theodore Davies Boal	Denver	Built for Crawford Hill

Connecticut

Image	Name	Year built	Style	Architect	City	Notes
	Iranistan	1848	Moorish	Leopold Eldlitz	Bridgeport	Was the first mansion of P.T Barnum, was destroyed by fire in 1857.
	Lindencroft	1860	Italianante	Albert G Tallmadge	Bridgeport	Was the second mansion of P.T Barnum after the fire in Iranistan, was demolished in 1924.
	Lockwood–Mathews Mansion	1864	Renaissance	Detlef Lienau	Norwalk	Today, a museum
	Waldemere	1869	Stick Victorian		Bridgeport	Was the third mansion of P.T Barnum, was demolished in 1889 for his new mansion, Marina.
	Samuel Clemens House (Mark Twain)	1874	Victorian Gothic	Edward Tuckerman Potter	Hartford	Today, a museum
	Marina	1889	Romanesque and Queen Anne	Longstaff and Hurd	Bridgeport	Was the fourth and last mansion of P.T Barnum in Bridgeport, was demolished in 1961.
	Hilltop	1889			Greenwich	Built for Henry Osborne Havemeyer, was demolished in 1930.
more images	Copper Beech Farm aka Lauder Greenway Estate	1896 or 1898^[15]	French Renaissance		Greenwich	Originally built by NYC native John Hamilton Gourlie, it was purchased by Andrew Carnegie's niece Harriet Lauder Greenway in 1905. Fully restored and renovated in 2023. For a time, it was the most expensive home in United States history. \|\| ^[16]^[17]
	Indian Harbor	1895	Neoclassical	Carrere & Hastings	Greenwich	Built for Elias Cornelius Benedict. One floor removed, circa 1938.
	Mailands	1906	French Renaissance and Colonial Revivial	Flagg & Chambers	Fairfield	Built for Oliver Gould Jennings, there is known as McAuliffe Hall and still standing
	Conyers Farms	1905	English Revival	Donn Barber	Greenwich	Built for Edmund C Converse, was destroyed by fire in 1985.
	Owenoke Farm	1908	Neoclassical		Greenwich	Built for Percy Avery Rockefeller, was demolished in 1935.
	Greyledge	1913			Greenwich	Built for Raynal Cawthorne Bolling, was demolished in 2006.
	Marion Castle	1914-1916	French Chateau	Hunt & Hunt	Stamford	Built for Frank J. Marion. Today, a private residence.

Delaware

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Nemours	1909	French Neoclassical	Carrère and Hastings	Wilmington	Owned by the Nemours Foundation	^[18]

District of Columbia

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Christian Heurich Mansion	1892	Richardson Romanesque	John Granville Meyers	Washington, DC	Formerly housed the Historical Society of Washington	^[19]
more images	Townsend House	1898–1901	Beaux Arts	Carrère and Hastings	Washington, DC	Built for Mary Scott Townsend and her husband Richard Townsend; home of the Cosmos Club since 1952	^[19]
more images	Walsh-McLean House	1903			Washington, DC	Today the Embassy of Indonesia	^[20]
more images	Anderson House	1905	Beaux-Arts	Little & Browne	Washington, DC	Built for Lartz Anderson. Today, it houses the Society of the Cincinnati's headquarters	^[21]^[7]
more images	Perry Belmont House	1909	Beaux-Arts	Ernest-Paul Sanson	Washington, DC	Headquarters of the General Grand Chapter of the Order of the Eastern Star	^[22]^[19]
more images	Edward Hamlin Everett House	1915	Beaux-Arts	George Oakley Totten Jr.	Washington, DC	Formerly the Turkish embassy, today the ambassador's residence	^[23]
	Patterson Mansion	1903	Neoclassical	Stanford White	Washington, DC	Built for Robert Wilson Patterson.
	Leiter Mansion	1893	Colonial Revival and Neoclassical	Theophilus Parsons Chandler Jr	Washington, DC	Built for Levi Leiter. Was demolished in 1947.
	Blaine Mansion	1882	Second Empire	John Fraser	Washington, DC	Built for James G Blaine.
	Stewart's Castle	1873	Second Empire	Adolph Clauss	Washington, DC	Built for William Morris Stewart, was demolished in 1901.
	Galt Mansion	1876	Chateusque		Washington, DC	Originally built for William Mathew Galt, later sold to Alexander Graham Bell and Edson Bradley. Bardley enlarged the house in 1907. Was demolished in 1930s.
	Field-Hearst Mansion	1883	Romanesque	Robert I Fleming	Washington, DC	Built for John W Field, later was sold to Charles S Fairchild and George Hearst, father of William Randolph Hearst. Was demolished in 1964.

Florida

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Villa Zorayda	1883	Moorish Revival	Franklin W Smith	St. Augustine	Designed by Franklin W Smith for himself, today is a museum.
more images	Whitehall	1902	Beaux Arts	Pottier & Stymus, Carrère and Hastings	Palm Beach	Built for the co-founder of Standard Oil, Henry Morrison Flagler. Today is open to the public for tours	^[24]
more images	The Casements	1910	Shingle Style		Ormond Beach	Built for the Reverend Dr. Harwood Huntington, later bought by John D Rockefeller in 1918, who died in the house in 1937. Was owned by the city of Ormond Beach and used as a cultural center and park	^[25]
more images	Villa Vizcaya	1914	Mediterranean Revival and Baroque	F. Burrall Hoffman Paul Chalfin (designer) Diego Suarez (landscape)	Miami	Houses the Miami Dade Art Museum	^[26]
	El Mirasol	1920	Mediterranean Revival	Addison Cairns Mizner	Palm Beach	Built for Edward Townsend Stotesbury. Was demolished in 1958

Georgia

Name	Year built	Style	Architect	City	Notes
Rockefeller Cottage	1892	Shingle		Jekyll Island	Was the summer house of William Rockefeller Jr. Today, a museum operated by Jekyll Island Museum
The Greyfield	1905	Colonial Revival		Cumberland Island	Was built for Margaret Carnegie Ricketson. Today, an inn and wedding venue
Dungeness	1886	Queen Anne		Cumberland Island	Built for Thomas M Carnegie. Destroyed by fire in 1959
Plum Orchard	1898	Classical Revival	Peabody and Stearns	Cumberland Island	Built for George Lauder Carnegie. The estate is now part of Cumberland Island National Seashore.
Rhodes Hall	1904	Richardson Romanesque	Willis F Denny	Atlanta	Built for Amos Giles Rhodes, today is open to the public and has been the home of The Georgia Trust for Historic Preservation since 1983.
John H James Residence	1869	Second Empire	William H Parkins	Atlanta	Originally built for John H James, was the Georgia Governor's Mansion between 1870 and 1923, in that year was demolished.

Illinois

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Marshall Field Jr House	1884	Romanesque	Solon Spencer Beman	Chicago	Today, converted into condominiums
	John J. Glessner House	1887	Romanesque, Richardsonian	Henry Hobson Richardson	Chicago	Today, Glessner House Museum
	Marshall Field House	1873	Second Empire	Richard Morris Hunt	Chicago	Demolished in 1955
	Thomas Dent House	1881	Romanesque	Burnham & Root	Chicago	Demolished in 1950s
	Joseph Sears House	1882	Romanesque	Burnham & Root	Chicago	Demolished in 1967
	John W Doane Mansion	1882	Romanesque	Theodore V. Wadskier	Chicago	Demolished in 1929.
	John Cudahy Mansion	1888	Romanesque		Chicago	Demolished in 1961.
	Cyrus McCormick Mansion	1879	Second Empire		Chicago	Demolished in 1954.
	Edith Rockefeller McCormick Mansion	1883	Romanesque	Solon Spencer Beman	Chicago	Originally built for Nathaniel Jones, Demolished in 1955 for an apartment building.
	Ferdinand Peck Mansion	1889	Romanesque	William LeBaron Jenney	Chicago	Demolished in 1969.
	George Pullman House	1876	Second Empire	Henry S. Jaffray	Chicago	Demolished in 1922
	William Wallace Kimball House	1892	Châteauesque	Solon Spencer Beman	Chicago	Former home of the United States Soccer Federation
more images	Nickerson House	1883	Late Victorian	Burling & Whitehouse	Chicago	Home to the Richard H. Driehaus Museum	^[7]
	Borden Mansion	1886	Châteauesque	Richard Morris Hunt	Chicago	Built for William Borden, was demolished in 1962
	MacVeigh Mansion	1893	Richardson Romanesque	Henry Hobson Richardson	Chicago	Built for Franklin MacVeigh, it was one of only two structures designed by HH Rochardson in Chicago. Was demolished in 1922.
	McGill Mansion	1891	Châteauesque	Henry Ives Cobbs	Chicago	Built for Dr John Alexander McGill, today are 34 condominiuns.
	Farwell Mansion	1882	Châteauesque	Treat & Foltz	Chicago	Built for Charles B Farwell, was demolished in 1946
more images	Palmer Mansion	1885	Early Romanesque, Norman Gothic	Henry Ives Cobb and Charles Sumner Frost	Chicago	Demolished in 1950	^[27]^[28]
	IL. Hegeler Carus Mansion	1876	Second Empire	William W. Boyington,	LaSalle	The mansion hosts numerous public programs, and is open for public tours. It is particularly notable for its high Victorian stencils and wall and ceiling paintings, its woodwork, and its history.

Indiana

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Tippecanoe Place	1889	Richardsonian Romanesque	Henry Ives Cobb	South Bend	Built for Clement Studebaker, currently a restaurant
	Bates-McGowan Mansion	1876	Romanesque Revival	William Lebaron Jenney	Indianapolis	Built for Harvey Bates Jr, was demolished in 1936

Iowa


Name	Year built	Style	Architect	City	Notes
C.R Joy House	1896	Queen Anne	George Franklin Barber	Keokuk	Destroyed by fire in 2018
Fred B. Sharon House	1891	Second Empire		Davenport	Today a private residence
J. Monroe Parker–Ficke House	1881	Second Empire	T. W. McClelland	Davenport	Since 1978 the building has served as a fraternity house for Delta Sigma Chi from the Palmer College of Chiropractic.
J.C Hubinger Mansion	1887	Queen Anne	C.H Stilson	Keokuk	Was demolished in 1918
John Peirce Mansion	1893	Romanesque Revival	Hansen Bros.	Sioux City	It is open to the public for quarterly open house events and is available for rental.

Kentucky


Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Conrad-Caldwell House	1895	Richardson Romanesque	Arthur Loomis	Louisville	Built for Theophilus Conrad, today is a house museum

Maine

Name	Year built	Style	Architect	City	Notes
Morse-Libby House	1860	Italianate	Henry Austin	Portland	Today, a museum
Reverie Cove	1895	Colonial Revival	Frederick Lincoln Savage	Bar Harbor	Built for Dr. John Davies Jones, later owned by Abram Hewitt, today, a private residence
Oak Hall	1914	Colonial Revival	Benjamin Marshall	Northport	Today, a private residence
East of Eden	1910	Mediterranean Revival	Guy Lowell	Bar Harbor	Today, a private residence
Highseas	1912	Colonial Revival	Frederick Lincoln Savage	Bar Harbor	Today, owned by Jackson Laboratories

Maryland

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Evergreen Museum & Library	1858	Classical Revival	Multiple	Baltimore	Now a historic house museum

Massachusetts

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Stephen Van Rensselaer Thayer House	1872	Second Empire	Peabody & Stearns	Boston	Today, offices
	Bull Mansion	1876	Romanesque Revival	Calvert Vaux	Worcester	Built for George Bull, later was the Grand Army of Republic Hall, today a restaurant.
	Eustis Estate	1878	Late Victorian	William Ralph Emerson	Milton	Constructed as a wedding gift for W.E.C Eustis and his wife. Owned by the same family until 2012 when it was sold to Historic New England. It opened as a house museum in 2017.
	Kragsyde Mansion, George Nixon Black Jr. House	1885	Shingle	Peabody & Stearns	Manchester by the sea	Demolished in 1927
more images	Elm Court	1885	Shingle style	Peabody & Stearns	Lenox	Built for Emily Thorn Vanderbilt and later ran as an inn by surviving relatives. Most recently purchased in 2022 and plans exist to renovate the mansion.	^[11]
more images	Naumkeag	1887	Shingle style	Stanford White	Stockbridge	Maintained by the Trustees of Reservations	^[29]
[1]	Oronoque	1887	Shingle style	William Henry Miller	Stockbridge	Later called Indian Hill; current condominiums	^[30]
more images	Searles Castle	1888	Renaissance Revival Châteauesque	McKim, Mead & White	Great Barrington	Home to the John Dewey Academy	^[31]
	Borden House	1892			Fall River	Built for Andrew Borden, a wealthy casket magnate, and later real estate developer, him, and his wife were murdered by Lizzie Borden in the house in 1892
more images	Wheatleigh	1893	Renaissance Revival	Peabody & Stearns	Lenox	Operated as a hotel	^[11]
more images	Ventfort Hall	1893	Jacobean Revival	Rotch & Tilden	Lenox	Built for Sarah Spencer Morgan and later utilized as School dorms, a hotel, a ballet camp, and finally a religious venue. Became abandoned and was saved in the late 1990s. Now operates as a house and Gilded Age museum	^[11]
more images	Shadow Brook Farm	1893	Tudor Revival	H. Neill Wilson	Stockbridge	Burned down in 1956	^[19]
	Albert Cameron Burrage House	1899	Châteauesque	Charles Brigham	Boston	Today, Apartments
	Bellefontaine	1899		Carrère and Hastings	Lenox	Built for Giraud Foster, now a hotel
more images	The Mount	1902	Georgian Revival	Ogden Codman Jr. and Francis L.V. Hoppin Beatrix Farrand (landscape)	Lenox	Home of Edith Wharton; later school dormitories and owned by The Shakespeare theatre company. Now open to the public.	^[32]
more images	Isabella Stewart Gardner House	1902	Renaissance Revival	Willard T. Sears	Boston	Houses the Isabella Stewart Gardner Museum	^[33]
	Northfield Chateau	1903	Châteauesque	Bruce Price	Northfield	Built for Francis Robert Schell. Was demolished in 1963.
	Eagle Rock	1904	Colonial Revival	Little & Browne	Prides Crossing	Built for Henry Clay Frick. Was demolished in 1969.
	Southfields	1905-1907	Georgian	Winslow, Bigelow & Wadsworth	Williamstown	Built for Robert Cluett, of the Cluett's who owned Arrow Shirts. Later owned by Pine Cobble School from 1940-1941. Renovated in 2017 and remains a private residence.
	Cheney–Baltzell Mansion	1907	Italianate, with Medieval Spanish details and landscape	Carrère and Hastings	Dover	Built for Alice Cheney–Baltzell, now, open for tours
more images	Bellefontaine Mansion	1912	Beaux-Arts	Carrère and Hastings	Lenox	Built for Giraud Foster. Today, the Lenox location of Canyon Ranch	^[34]
	Elm Tree House	1924-1929	Georgian	James Gamble Rodger	Williamstown	Built for Alta Rockefeller Prentice on an estate she founded in 1910. Presently owned by Williams College.

Michigan

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Wilhelm Böing House	1875	Châteauesque	Henry T Brush	Detroit	Wilhelmm Böing was the father of William E Boeing, founder of the famous aviation company. The house was demolished in 1935.
	Joseph Black House	1876	English Revival	Mortimer L Smith	Detroit	Demolished in 1920.
	Philo Parsons House	1876	Second Empire	Elijah Myers	Detroit	Demolished in 1935
	Clark J Whitney House	1865	Italianate		Detroit	Demolished in 1914
	Charles DuCharme House	1869	Second Empire	Mortimer L Smith	Detroit	Demolished in 1949
	Henry P. Baldwin House	1877	Italianate	Gordon W Lloyd	Detroit	Demolished in 1930s
	Thomas W. Palmer Mansion	1864	Italianate	Henry T Brush	Detroit	Originally built in 1864 and greatly enlarged in 1874, was destroyed by fire in 1908.
	William H. Wells House	1889	Richardsonian Romanesque	William H. Miller	Detroit	Today it is still a private home
	A.L Stephens Mansion	1890	Romanesque	Mason & Rice	Detroit	Was built for Albert L Stephens and demolished in 1925.
	George S Frost House	1881	Queen Anne		Detroit	Was built for George Smith Frost in the Brush Park neighborhood, was demolished in 1998 after 30 years of abandonment.
	Leggett Mansion	1883	Romanesque	John Scott & Co	Detroit	Was built for Wells Wilner Leggett, was demolished in 1930s.
	Meadow Brook Hall, Matilda Dodge House	1929	Tudor Revival	William E. Kapp Smith, Hinchman & Grylls	Rochester Hills	Today it is the Meadow Brook Hall Museum
	Ransom Gillis House	1876	Venetian Gothic	Henry T. Brush & George D. Mason	Detroit	Abandoned since 1970 until its restoration in 2015
	Franklin H. Walker House	1896	Neo-Jacobean	Mason & Rice	Detroit	Transformed into Michigan Mutual Liability Hospital and demolished in 1990
	Charles Lang Freer House	1892	Shingle	Wilson Eyre	Detroit	Today, a Wayne State University campus building
	George Jerome House	1877	Second Empire	Henry T Brush	Detroit	Demolished in 1935
	Col. Frank J. Hecker House	1892	French Renaissance	Louis Kamper Scott, Kamper and Scott	Detroit	Today, a Wayne State University campus building
more images	David Whitney House	1894	Romanesque Revival	Gordon W. Lloyd	Detroit	Today, a restaurant	^[7]
	Burt/Stephens Mansion	1881/1891	Châteauesque	Mason & Rice	Detroit	Was built in 1881 for John Burt, was sold to Clorinda L Stephens in 1891 and extensively altered. Finally was demolished in 1920s
	Bagley House	1869	Italianate		Detroit	Was built for John Judson Bagley and later was converted into the Detroit Conservatory of Music in 1890s and demolished in 1914 for the Statler Hotel.
	John Stoughton Newberry House	1875	Italianate	Gordon W. Lloyd	Detroit	Demolished in 1961.
	Mostly Hall	1910	French Renassaice	John Scott & Company	Detroit	Built for Willis E. Buhl. Was demolished in 1940
	John B Ford Mansion	1904	Colonial Revival	Alpheus W. Chittenden	Detroit	The house was disassembled and reassembled on Windmill Pointe Drive in 1928. (Originally 8192 Jefferson)
	Dr. R. Adlington Newman Mansion	1902	English Tudor Revival	Henry P. Kirby	Detroit	Was demolished in 1980s
	Theodore D. Buhl Mansion	1906	Neo-Classical	John Scott & Company	Detroit	Was demolished in 1977
more images	Russell A. Alger Jr. House	1910	Italian Renaissance Revival	Charles Adam Platt	Grosse Pointe Farms,	Today, a community center for the Grosse Pointe Communities	^[19]
	Clairview	1915	Neo-Classical	John Scott & Company	Grosse Pointe Shores	Built for Harry N Torrey, was demolished in 1959.
	Emory L Ford Mansion	1916	English Tudor Revival	Albert H. Spahr	Grosse Pointe Shores	Was demolished in 1944
	Stonehurst	1915	English Tudor Revival	Albert H. Spahr	Grosse Pointe Shores	Was built for Joseph B. Schlotman, was demolished in 1974
	Rose Terrace I	1912	English Tudor Revival	Albert Kahn	Grosse Pointe	Was built for Horace E Dodge and his wife Anna. When Anna became a widow, she demolished the house and built a much more luxurious house in its place.
	Rose Terrace II	1934	Neo-Classical	Horace Traumbauer	Grosse Pointe	Was built for Anna Thompson Dodge, widow of Horace E Dodge, co-founder of Dodge Brothers Company, was the most opulent residence of Michigan and was demolished in 1976.
	Herbert V Book Mansion	1922	French Renaissance	Louis Kamper	Grosse Pointe Park	Was destroyed by fire in 1978
	Edgemere	1882	Victorian	Mason & Rice	Grosse Pointe Farms	Built for Joseph H Berry, was demolished in 1941
more images	Fair Lane	1915	Baronial and Prairie	Joseph N. French William Van Tine Marion Mahony Griffin Frank Lloyd Wright Jens Jensen.	Dearborn	Built for Henry Ford, founder of Ford Motor Company. Today, a historical landscape and house museum	^[7]
	R.E Olds Residence	1903	Queen Anne	Darius B. Moon	Lansing	Was built for Ransom Eli Olds, founder of Oldsmobile Motor Works. Was extensively remodelled in 1952 and demolished in 1971.

Minnesota

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	James J. Hill House	1891	Richardsonian Romanesque	Peabody and Stearns	Saint Paul	Operated by the Minnesota Historical Society	^[35]
more images	Glensheen Mansion	1908	Jacobean Revival	Clarence H. Johnston Sr. Charles W. Leavitt Jr.	Duluth	Operated by the University of Minnesota Duluth as a historic house museum	^[7]
	Kittson Mansion	1884	Second Empire	Abraham Ratcliffe	Saint Paul	Was built for Norman Wolfred Kittson, was demolished in 1908 for the Saint Paul Cathedral.
more images	Southways Estate	1918	Georgian and Tudor Revival	Harrie T. Lindeberg	Orono, Lake Minnetonka	Built for John S. Pillsbury; demolished in 2018	^[36]
	Fair Oaks	1884	Châteauesque	E Townsend Mix	Minneapolis	Built for William Washburn. Was demolished in 1924
	Van Dusen Mansion	1893	Châteauesque, Richardson Romanesque	Edgard E Joralemon	Minneapolis	Built for George Washington Van Dusen
	Turnblad Mansion	1908	Châteauesque	Boehme and Cordella	Minneapolis	Built for Swan Turnblad, today is the American Swedish Institute.
	Gates Mansion	1914	Mediterranean Revival, Beaux-Arts	Marshall & Fox	Minneapolis	Built for Charles Gilbert Gates, the mansion was the first private residence with air conditioning installed in USA. Demolished in 1933.	^[37]

Mississippi


Image	Name	Year built	Style	Architect	City	Notes
	Longwood	1864	Octagonal, Oriental	Samuel Sloan	Natchez	Built for Haller Nutt. Construction began in 1859 and was never completed due to the civil war and Nutt's death in 1864.
	Residence of R.L. Covington	1907	Colonial	George Franklin Barber	Hazlehurst	Today, a private residence

Missouri

Name	Year built	Style	Architect	City	Notes
Wyeth-Tottle Mansion	1879	Italianante	Edmond Eckle	St Joseph	Built for John Wyeth, since 1948 is the Museum of St Joseph.
Harvey M. Vaile Mansion	1881	Second Empire	Asa B. Cross	Independence	Today, a museum
Robert A. Long House	1910	Beaux-Arts style	Henry Ford Hoit	Kansas City	Today, the Kansas City Museum
Mack B. Nelson House	1914	Romanesque Revival	Henry Ford Hoit	Kansas City	Built for lumber magnate Mack Nelson, now a private residence
Samuel Cupples House	1890	Romanesque Revival	Thomas B. Annan	St. Louis	Today, a museum

Montana

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	W. A. Clark Mansion	1884	Romanesque Revival Victorian	C. H. Brown	Butte	Today, a bed and breakfast	^[38]
	Moss Mansion	1903	English Renaissance	Henry Janeway Hardenbergh	Billings	Built for Preston Moss, and his family, now, a museum

Nebraska


Image	Name	Year built	Style	Architect	City	Notes	Ref
	Joslyn Castle	1903	Romanesque	John McDonald	Omaha	Was built for George Joslyn and today is a museum

New Jersey

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	J. Harper Smith Mansion	1880	High Victorian, Queen Anne, Stick/Eastlake	Frank L. Bodine Horace Trumbauer	Somerville	Originally built for J. Harper Smith	^[39]
	Glenmont	1881	Queen Anne	Henry Hudson Holly	West Orange	Originally built for Henry Pedder, Thomas Edison moved in 1885
	The Towers or Aladdin Castle	1881	Queen Anne		Elberon	Originally built for Cornelius K. Garrison, was sold to Salomon R Guggenheim in 1900. The House was demolished in 1940.
	Lambert Castle	1892	Romanesque and medieval		Paterson	Was built for Catholina Lambert and today is a museum.
more images	Florham	1893	English Baroque Revival	McKim, Mead & White Frederick Law Olmsted (landscape)	Madison and Florham Park	Part of the Fairleigh Dickinson University	^[40]
more images	Georgian Court	1899	Georgian Revival	Bruce Price	Lakewood	Today, part of Georgian Court University	^[41]
	Kenilwood	1901	Beaux Arts	George B. Post	Bernardsville	Built for broker George B. Post Jr. by his father, now, owned by Mike Tyson	^[42]
more images	Rutherfurd Hall	1902	Tudor Revival	Whitney Warren Olmsted Brothers (landscape)	Allamuchy Township	Owned and managed by the Allamuchy School District	^[43]
	First Shadow Lawn	1903	Colonial Revival		West Long Branch	Built for John A McCall. Destroyed by fire in 1927
more images	Blairsden	1903	French Renaissance	Carrère and Hastings	Peapack-Gladstone	Formerly a retreat house for the Sisters of St. John the Baptist	^[44]
	Darlington Manor	1907	Jacobean Revival	James Brite	Mahwah	Built for George Crocker. Today it is still a private home.
	Krueger Mansion	1888	Late Victorian	Henry Schultz	Newark	In late 2020, the city and the company Makerhoods broke ground on refurbishing the mansion into live/work spaces for local experienced "makers" in the food, beauty, craft and other small-scale artisan industries for $1800 a month by application only.
	Dr George Gil Green House	1876	Second Empire	Paschal Madera	Woodbury	The house was extensively renovated in the 1940s finally destroyed by fire in 1968.

New York

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Beechwood	1780 (renovated 1890s)	Neo-classical Federal, Colonial Revival (renovation)	R. H. Robertson (1890s renovation) William Welles Bosworth (c. 1907 renovation)	Briarcliff Manor	Converted to condominium apartments in the 1980s	^[45]^[46]
	Cedarmere	1787 (renovated 1843, rebuilt 1903)	Colonial Revival, Classical Revival	Richard Kirk, Ogden Codman Jr.	Roslyn Harbor	Colonial farmhouse later renovated numerous times by William Cullen Bryant and then rebuilt after a 1902 fire.
	G. R. Underhill House	1820 (renovated c. 1915, 1950)	Colonial		Lattingtown	Original farmhouse built for the Underhill family. Eventually sold to Paul Bonynge who renovated house into a country seat. Subsequently passed to the Mcdonalds who remodeled house and then George Haggerty.
	Matinecock Farms	1830 (renovated 1900, 1920)	Colonial Revival	Bradley Delehanty	Lattingtown	Constructed for the Cock family and later owned by the Ryan family. Renovated in 1900 and then again in 1920 for Frank W. M. Cutcheon.
more images	Mills Mansion	1832 (renovated c. 1895)	Colonial (1792 original) Greek Revival (1832 replacement) Beaux-Arts (1895 renovation)	McKim, Mead, and White (1890s renovation)	Staatsburg	Today, located within Ogden Mills & Ruth Livingston Mills State Park	^[47]
more images	Lyndhurst	1838	Gothic Revival	Alexander Jackson Davis	Tarrytown	Owned by the National Trust for Historic Preservation and open to the public	^[48]
	Glenlo	1850 (renovated 1920)	Italianate (original) Greek Revival (1920 renovation)	Howard Major (alterations).	Glen Cove	Italianate residence constructed for E.H. Somarindyck, and later owned by Edward Irving Eldridge Jr. Eldridge had renovations done in 1920 and it was later converted into the Glen Cove Gurdawa.
	Meadow Croft	1850 (renovated 1891-1892)	Colonial Revival	I.H. Green	Sayville	Farmhouse constructed in 1850 and purchased in 1873 by Robert Barnwell Roosevelt. In 1891, his son John Ellis Roosevelt commissioned a large Colonial Revival structure to be added onto farmhouse. Eventually added to Sans Souci County Park and is periodically opened for tours.
more images	Wilderstein	1852	Italianate (original) Queen Anne (1888 renovation)	John Warren Ritch, Arnout Cannon, Joseph Burr Tiffany, Calvert Vaux (landscape)	Rhinebeck	Today, operated as a house museum	^[49]
	Dewey House	1860 (expanded 1900)	Gothic	Frederick S. Copley	Roslyn Harbor	Originally constructed in 1860 by William Cullen Bryant for Joshua Dewey. In 1900, Lloyd S Bryce bought property and built Clayton. However, he needed guest housing so he lifted the Dewey House on stilts and added a bottom floor to the house. Later stayed at by Teddy Roosevelt and Woodrow Wilson. Now part of the Nassau County Museum Of Art but in need of renovations.
	Armour-Stiner House	1860	Eclectic: Octagon Mode		Irvington	Today, a museum
	Orchard Hill	1860	A.J. Downing style		Westbury	Residence constructed circa 1860 for John Hicks. Later bought by John Phipps and given to his daughter Peggie Phipps as a birthday present in 1930. Was enlarged sometime throughout its lifetime and is now a wedding venue for Old Westbury Gardens.
	Vermland	1862	Second Empire	Cornelius Henry Delamater	Asharoken	Built for and presumably by Cornelius Henry Delamater who called it Vermland. Later called The Bevin House and has passed through many owners.
	Bay Villa	1862	Second Empire		Staten Island	Built for John M Pendleton, it was the summer house of Anson Phelps Stokes between 1868 and 1886, was abandoned in 1910s and later demolished in 1930.
	The Cliffs	1863-1864	Gothic Revival	Henry G. Harrison	Oyster Bay	Built for James William Beekman, and has remained a private residence. Recently sold.
	Sherman D Phelps House	1870	Second Empire	Isaak G Perry	Binghamton	Today, a museum
more images	Olana	1872	Eclectic	Calvert Vaux	Greenport	Today, operated as a house and property museum. Home to Frederic Edwin Church	^[50]
more images	Glenview	1877	Late Victorian	Charles W. Clinton	Yonkers	Today, houses the Hudson River Museum	^[51]
	Hillside	1878	Shingle Colonial	Potter & Robinson	Oyster Bay	Constructed for Sarah Sampson Adam (daughter of Isaac Sampson) on large estate with landscaping by Beatrix Jones Farrand. Later sold to Richard Derby and his wife Ethel Roosevelt Derby, who lived there until 1977. Eventually converted into the Landmark Colony of Oyster Bay.
more images	Castle Rock	1881	Romanesque Revival	J. Morgan Slade	Garrison	Private residence	^[52]
more images	Idle Hour	1882	Tudor Revival	Richard Morris Hunt	Oakdale	Burned down in 1899	^[53]
	Gen. Edward F. Jones House	1883	Queen Anne		Binghamton	Built for Edward F. Jones, now, a private residence
	Sagamore Hill	1884	Queen Anne	Lamb and Rich	Cove Neck	Built for President Theodore Roosevelt
	Westbrook	1886	Tudor Revival	Charles C Haight	Great River	Built for William Bayard Cutting, as part of large estate. Soon, first private golf course in the country was built on the estate. Eventually, in 1936 it was given to the Long Island State Park Commission and converted into Bayard Cutting Arboretum State Park.
more images	Rockwood Hall	1886	Elizabethan	Gervase Wheeler (1849 house) Ebenezer L. Roberts and Carrère and Hastings (c. 1890 renovation)	Mount Pleasant	It was the second-largest house in the U.S.; Demolished c. 1941	^[54]
	Gratwick Mansion	1888	Richardsonian Romanesque	H.H Richardson	Buffalo	Built for William Henry Gratwick, demolished in 1919.
	Duryea Mansion	1888	Queen Anne		Glen Cove	Constructed for Henrick Vanderbilt Duryea, founder of Duryea Starch Factory. Extant 24-room mansion in great condition.
	Hamlin Mansion	1889	Richardsonian Romanesque	James H. Marling and Herbert C. Burdett	Buffalo	Built for William C. Hamlin, was demolished in 1937.
	Wheatly	1890-1900	Colonial and Dutch Farmhouse	Mckim, Mead & White	Old Westbury	Built over a 10 year period for Edwin D. Morgan as a self-sustaining mansion complex. In the 1950s, amidst development, the center portion of the main house and parts of the wall and gateway were torn down. Two side wings are extant.
	Henry D. Whiton residence	1890	Tudor Revival and Elizabethan	Alfred C. Bossom	Hewlett	Constructed for Henry D. Whiton. Later converted into the Lawrence Country Day School which later became Lawrence Woodmere Academy. Subsequently owned by the Hebrew Academy of Long Beach and is now the Stella K. Abraham High School for Girls.
	The 19th Hole	1891	Queen Anne Eclectic		Glen Cove	Constructed for G. Stafford Bucknall, whose parents lived at "Leahead" in the Red Spring Colony.
	Reid Hall	1892	Romanesque and medieval	Stanford White	Purchase	Was built for Whitelaw Reid, Is part of the Manhattanville College since 1951.
	Yaddo Mansion	1893	Romanesque and Tudor Revival	William Halsey Wood	Saratoga Springs	Was built for Spencer Trask. Since 1900 is an artists' community.
	Montrose W. Morris residence	1894	Shingle	Montrose W. Morris	Glen Cove	Self-Designed house for and by Montrose W. Morris in the North Country Colony. Subsequently occupied by Frederick W. Wurster and Morris Hadley, at separate instances.
more images	Estherwood	1894	Renaissance Revival	Buchman & Deisler	Dobbs Ferry	Today, located on the campus of The Masters School	^[55]
	Wyckoff Mansion	1895	Tudor Revival	William Henry Miller	Carleton Island	Was built for William O. Wyckoff, the mansion is abandoned today.
	The Birches	1895 (renovated 1915)	Neo-Colonial	C.P.H. Gilbert, Howard Major	Glen Cove	Constructed for Harvey Murdock, founder of North Country Colony. Later sold to Samuel Brewster who renovated house significantly in 1915, essentially re-doing it from the ground up. Presently abandoned and in need of preservation.
more images	Woodlea	1895	Renaissance Revival and Beaux-Arts	McKim, Mead & White	Briarcliff Manor	Today, the Sleepy Hollow Country Club	^[56]
more images	Alexander Brown House	1895	Richardsonian Romanesque	Gordon Wright	Syracuse		^[7]
	Germelwyn	1896	Colonial Revival	C.P.H. Gilbert	Glen Cove	Constructed for Leonard J. Busby and later owned by his children and son-in-law Thomas Lonsdale Leeming. Eventually converted into the North Shore Day School and Camp.
	The J.K.O Sherwood Residence	1896	Shingle		Glen Cove	Constructed for J.K.O. Sherwood in the ever-growing Red Spring Colony. Sherwood was a founder of the colony.
	Green Acres	1896	Shingle	C.P.H. Gilbert, Lamb & Rich (alterations	Glen Cove	Constructed for Dr. Cornelius Nevius Hoagland and subsequently owned by George Patterson Tangeman. Tangeman altered the house significantly and eventually gave it to his son. Lastly, it saw ownership by Samuel O'Keefe.
more images	Brookholt	1897	Colonial Revival	John Russell Pope	East Meadow	Destroyed by fire in 1934	^[57]
more images	Indian Neck Hall	1897	Georgian	Ernest Flagg	Oakdale	Part of the Long Island campus of St. John's University	^[58]
	Grenville Clark Sr. Residence	c. 1898	Long Island Farmhouse	N/A	Albertson	Purchased by Grenville Clark in early 1920s from unknown owner. Later become Clark Botanical Gardens.
	Charlon House	1898	Colonial Revival		Glen Cove	Constructed for Charles A. Frank and later owned by David Hurst Knott. Extant house
	Burrwood	1898–1899		Carrère and Hastings	Long Island	One of the Gold Coast Mansions, has been torn down
more images	Henry W. Poor House (also known as Poor's Palace and Woodland)	1899	Jacobean	T. Henry Randall	Tuxedo Park	Later owned by Henry Morgan Tilford	^[59]
more images	Hyde Park	1899	Beaux-Arts	McKim, Mead & White	Hyde Park	Owned and operated by the National Park Service	^[26]^[60]
	Oakdene/Waldene	1900	Colonial Revival	Grosvenor Atterbury	Roslyn	Built for Walter G. Oakman sometime around 1900, and later owned by Henry D. Walbridge. Fire destroyed the house in 1946.
	Villa D'Orsay	1900 (alterations in 1918)	Shingle, Georgian	Butler & Corse, Howard Major (alterations)	Glen Cove	Constructed for William Beard, financier. Beard had the house renovated and altered significantly in 1915. Later sold to Joel David Woodside, Samuel Croft Register (who called it Demingcroft), and Reginald E. Gillmore.
	Clayton	1900	Georgian Revival	Ogden Codman Jr.	Roslyn Harbor	Built for William Cullen Bryant, later owned by Lloyd S. Bryce and now the Nassau County Museum of Art.
	Terrace Hall	1900	Tudor	Renwick, Aspinwall & Owen	Lawrence	Constructed for Richard Augustus Peabody, and later owned by William Raymond Sr. and Isaac Gamel. Presently the Rockaway Hunting Club.
more images	Idle Hour	1901	English Country	Richard Howland Hunt	Oakdale	Formerly part of Dowling College	^[53]
more images	Waldheim	1901	Tudor Revival	Olmstead Brothers (grounds)	Scarborough-on-Hudson	Sold in 1946, subdivided into residential lots, and torn down in 1955	^[61]
more images	Harbor Hill	1902	French Renaissance Revival	McKim, Mead & White	East Hills	Demolished in 1947	^[62]
	Dosoris	1902	Georgian Revival	James Brite	Glen Cove	Constructed for Herbert Lee Pratt in 1902 as a country house. Just 9 years later, Pratt realized he wanted to upgrade and demolished 2/3 of the house, retaining one wing which is now used as the "White House" by Webb Institute, which purchased the house's replacement "The Braes" in 1947.
more images	Harry E. Donnell House	1902	Tudor Revival	Harry E. Donnell; Randall & Miller	Eatons Neck		^[63]
	Knole	1903		Carrère and Hastings	Westbury	Built for Herman B. Duryea
	Nassau Hall	1904	Neoclassical	Delano & Aldrich	Muttontown	Built for over 9 years for Bronson Winthrop. It was modeled after Mount Vernon, and is now part of the Muttontown Preserve.
	The Netherlands	1904	Shingle	H. Craig Severance	Hempstead	Built for William S. Hofstra. His family later sold the house to be used for public good and it is now the administrative building at Hofstra University.
	Boldt Castle	1904	Châteauesque and Romanesque	GW & WD Hewitt	Alexandria Bay	Built for George Boldt, today is a tourist attraction.
	Greentree	1904	Dutch Colonial	D'Hauteville & Copper, Guy Lowell.	Manhasset	Owned by the Whitney Families throughout the 20th century, and is presently ran by the Greentree Foundation.
	Rochroane Castle	1905	Medieval	A.J.Manning	Irvington	Was built for Melchior Stewart Beltzhoover, was destroyed by fire in 1970s.
more images	Laurelton Hall	1905	Art Nouveau	Louis Comfort Tiffany	Laurel Hollow	Burned down in 1957	^[64]
	Jericho Farms	1906	Georgian Revival	John Russell Pope	Jericho	Constructed for Middleton S. Burrill on 1,000 acre estate. Later reduced to half its size and converted into the Meadowbrook Golf Club.
	Cedarcroft	1906	Italian Renaissance	Albro & Lindeberg	Glen Cove	Constructed for Arthur Wickes Rossiter and later resided in by Ella D. Guthrie of Meudon. Eventually sold to Bouvier "Buddy" Beale and went under a restoration in 2014.
more images	Westbury House	1906	Carolean Revival	George A. Crawley	Old Westbury	A house museum open for tours	^[63]
	Knollwood	1906	Italian Renaissance	Hiss and Weekes	Muttontown	Built for Charles Hudson and later owned by the Senff family. Final weed was King Zog of Albania, who attempted to use it as an exile-palace. He was denied and the house was subsequently demolished.
	Webb Horton Mansion	1906	Romanesque	Frank Lindsay	Middletown	Today part of the SUNY Orange Campus
more images	Welwyn	1906	Georgian Revival	Babb, Cook & Willard Delano & Aldrich (1920 renovation)	Glen Cove	Site of the Holocaust Memorial and Tolerance Center of Nassau County since 1992	^[65]
	Rosemary Farm	1907	Shingle	Wilson Eyre	Lloyd Harbor	Built for Roland Ray Conklin in 1907. Later adjoined by a large Open-Air Amphitheater which was used for many large plays and productions throughout the early 1900s. Eventually, it was sold to the Seminary of the Immaculate Conception and was left abandoned in the 1980s. Almost entirely burnt down by fire in 1990.
more images	Arden	1909	Beaux Arts	Carrère and Hastings	Harriman	Built for Edward Henry Harriman, now owned by the Research Center on Natural Conservation	^[66]^[67]^[68]
	Coindre Hall	1910-1912	Renaissance, French Chateausque	Clarence Sumner Luce and J.V. Harriman	Huntington	Built for George McKesson Brown from 1910-1912. Later owned by Brothers of Sacred Heart and presently a Suffolk County Park.
	Tullaroan	1910	Neo-Federal	James W O'Connor	North Hills	Built for James P. Grace with landscaping by the Olmsted Brothers. Later renovated by Horace Trumbauer and now the Deepdale Golf Club.
	Eagle's Nest	1910	Spanish Revival	Warren & Wetmore	Centerport	Built for William K. Vanderbilt II, and gradually expanded for decades until approximately 1930. Later converted into the Vanderbilt Museum, which holds art and retains a planetarium.
	The Manor	1910	Georgian	Charles A. Platt	Glen Cove	Built for John Teele Pratt and was later converted into the Harriman House conference center. Finally repurposed as the Glen Cove Mansion Hotel.
	Killenworth	1912	Tudor Revival	Trowbridge and Ackerman	Glen Cove	Built for George Dupont Pratt to replace ruins of an earlier mansion destroyed by fire. Sold in the early 1940s to a truck company and then the Soviet Union. Now used as a diplomatic retreat.
	Portledge	1910	Tudor	Howard Greenley	Matinecock	Constructed for Charles Albert Coffin on 130 acre estate. Later owned by his daughter and then the North Shore Bird and Game Sanctuary. Presently Portledge School
more images	Hempstead House (also known as Castle Gould)	1912	Gothic Revival	August Allen	Sands Point	Started by Howard Gould and completed by Daniel Guggenheim	^[69]
	Munnysunk	1912 (renovated earlier farmhouse)	Long Island Farmhouse	H Craig Severance	Lattingtown	Early 19th century farmhouse altered and renovated by Frank Bailey. Later converted into Bailey Arboretum.
	The Braes	1912	Jacobean	James Brite	Glen Cove	Replaced an earlier c. 1902 mansion on the Dosoris estate. Both houses were built for Herbert Lee Pratt and this present residence has been since converted into the Webb institute.
	Land of Clover	1912	Adam, Georgian	Archibald Brown	Nissequogue	Constructed for Lathrop Brown with two unique curved wings on an estate featuring a circular horse stable. Later became The Knox School.
	Blythewood	1913	Georgian Revival	Henry Otis Chapman	Muttontown	Constructed for George Smith and sold to Alfred Cotton Bedford in 1923. Bedford had landscaping done by Charles Leavitt & Sons and renamed estate "Pemberton." Later sold to Alfred L. Hoffman Sr. who called property "Radnor House," and sold it to Dr. Frank H Netter & Alan Stam.
more images	Kykuit	1913	Colonial Revival	Delano & Aldrich William Welles Bosworth (renovation)	Pocantico Hills	Built for John Davison Rockefeller, the richest man in modern history. Owned by the National Trust for Historic Preservation	^[7]
	Frank C. Crowell Residence	1913	Dutch Colonial Revival	George J. Hardway	Great Neck Estates	Residence constructed for Frank & Isabel C. Crowell. Sold to John Jacob Atwater Sr. in 1920 and later sold by the family to become the Great Neck Estates Village Hall.
	Matinecock Point	1913	Georgian Colonial	Christopher Grant LaFarage	Glen Cove	Mansion constructed for John Pierpont Morgan Jr. on East Island. Later became a nun convent and was demolished in 1980.
	Walter J. Vreeland Residence	1914	Tudor Revival	Carreto & Foster	Kings Point	Constructed for Walter J. Vreeland, and subsequently sold to Judith Friedman. It was finally part of a trust company before being bought and incorporated into the USMMA.
	Woodbury House	1915	Tudor	Cross & Cross	Woodbury	Constructed for James Watson Webb II and later sold to Edward Tinker. After threat of demolition in 1950s, Gilbert Tilles would buy the house. Eventually, he donated it to the Town of Oyster Bay and it is now the Syosset-Woodbury Community Park.
	Mayhasit	1915	Georgian	Walker & Gillette	Glen Cove	Constructed for Francis Lyman Hine as a replacement of his earlier house in Red Spring Colony. Later converted into the Bayberry Bath & Tennis Club and more notably Fiedel Day School. Finally became Condominiums after a period of abandonment in the 1980s.
	Joseph Bryant Residence	1915	Dutch Colonial	Frank J. Foster	Kings Point	Residence part of the Grenwolde development first owned by Joseph Bryant. Subsequently in the hands of Charles Neiley and later converted into Quarters A as part of the USMMA.
more images	DuPont-Guest Estate (also known as White Eagle)	1916	Georgian Revival	Carrère and Hastings	Brookville	Since 1972, it has been part of the Old Westbury campus of the New York Institute of Technology	^[70]
	Bonnie Blink	1916	Federal	Horace Trumbaeur	Lake Success	Residence constructed for Henry Phipps and completed in 1919. Used by British Children in World War 2 before becoming the Phipps Administrative Building in the Great Neck School District.
	Ormston House	1916	Tudor Revival	Betram Goodhue	Locust Valley	Built for financier John E. Aldred on the footprint of Lattingtown, which was demolished by Aldred & William Dameron Guthrie in 1900. Presently Saint Josephat's Monastery.
	Trabue Pittman Residence	1916	Beaux Arts, French Renaissance		Kings Point	Reports indicate that Trabue Pittman first owned this property in 1916. He most likely constructed the house this year, later selling it to Thomas Meighan. Potential remodeling rebuilding in 1942. Now part of the United States Merchant Academy.
	Forker House	1916	French Renaissance	Henry Otis Chapman, Charles Leavitt & Sons w/ John Jacob Levinson	Kings Point	Built for Henri Bendel and later renovated by Walter P. Chrysler. Eventually converted into the United States Merchant Academy.
	Delbarton	1916	Spanish Renaissance	Addison Mizner	Old Westbury	Constructed for I. Townsend Burden in a U-shaped fashion. Later owned by deLancey Kountze and finally the New York Institute of Technology.
more images	Winfield Hall	1916	Italian Renaissance	Gilbert, Charles P.H.	Glen Cove	Privately Owned	^[71]
	Norwich House	1917-1920	Georgian	Little & Brown.	Upper Brookville	Built for Frank C. B. Page, and later converted into a Soviet Union retreat. In 2016, the U.S. government had the residence vacated and it has been unoccupied since.
	Hutfield	1917	Georgian Revival	John Russell Pope (alterations by James W O'Connor)	Brookville	Constructed for J. Randolph Robinson and later sold to Philip Green Gossler. Finally sold to E.F. Hutton who had alterations done. Bought by Long Island University in 1962 and owned since.
more images	Beacon Towers	1918	Gothic Châteauesque	Hunt & Hunt	Sands Point	Demolished in 1945	^[72]
	Mallow	1918	Georgian Revival	William W. Bosworth	Oyster Bay	Built for Walter Farwell and later converted into the East Woods School. Well-preserved interior today.
	Northcourt	1918	English Tudor	James W. O'Connor	North Hills	Built for Lawrence Hobart Shearman and later sold to Frederick Lunning. Eventually converted into Buckley Country Day School.
	Coe Hall	1918-1921	Tudor Revival	Guy Lowell; Career & Hastings	Oyster Bay	Built for William R. Coe as a replacement for a previous mansion that was destroyed by fire. Given to New York State in 1949 and is now a Historic Park and House Museum.
more images	Oheka Castle	1919	Châteauesque	Delano & Aldrich Olmsted Brothers (landscape)	West Hills	A member of Historic Hotels of America	^[73]
more images	Inisfada	1920	Tudor Revival	John T. Windrim	North Hills	Demolished in December 2013	^[74]
	Claralea	1920	Italian Renaissance	Schwartz & Gross, B.N. Marcus	Kings Point	Constructed for Sidney H. March and later sold to Max Horowitz. Subsequently, the estate saw ownership by Ed Wynn, Ellsworth M. Slalter, and Nicholas M. Schenk. Finally, it became part of the USMMA in 1942.
	Hillwood	1921-1929	Tudor Revival	Charles Hart	Brookville	Built for Marjorie Merriweather Post and later donated to Long Island University and converted into the C.W. Post campus.
more images	Lillian Sefton Dodge Estate (also known as Sefton Manor and Mill Neck Manor)	1922	Tudor Revival	Clinton and Russell	Mill Neck	Today, the Mill Neck Manor Lutheran School for the Deaf	^[63]
	Holland House	1922	Colonial	Aymar Embury II	Uniondale	Constructed for Maxwell Stevenson by Aymar Embury II. It was purchased in 1946 and now serves as an Admissions building.
	Underhill Farm / Killingworth	1922 (early 1700s core)	Eclectic Mix	Harrie Lindeberg	Lattingtown	Pre-revolutionary house known as "Underhill Farm" redone and added onto significantly for Myron C. Taylor in 1922 (only one bedroom was kept in the original Colonial style). Later became Episcopal Diocese of Long Island and now a residence again undergoing renovation.
	Chelsea	1923	French Renaissance	Williams Adams Delano	Muttontown	Modeled after a Chinese residence seen by owner Benjamin Moore in 1921. Later given to Nassau County and is now part of The Muttontown Preserve.
	Falaise	1923	French Norman	Frederick J. Sterner, Polhemus & Coffin	Sands Point	Residence constructed for Harry F. Guggenheim on 90 acre estate given by his father Daniel Guggenheim. After Harry passed in 1971, Falaise became a house museum.
	Green Arbors	1924 (mid 1700s core)	Colonial	John J. Weeks	Locust Valley	Constructed for the Weeks family c. 1672 on Native American property. Added onto / Renovated in the 1750s, 1850s (after a fire destroyed 17th century wing), 1925, and 1970. Formally titled Green Arbors when it was owned by Robert A. Lovett from the 1920s to 1940s. Subsequently owned by Charles P. Grimes, George Rose, and the Elys.
	Henry C. Martin Residence	1924	Tudor	Harrie Lindeberg	Glen Cove	Constructed for Henry Clifford Martin. Interior murals and designs done by Arbam Poole and Samuel Yellin. Subsequently owned by Robert M. Fromm and Samuel Katz.
more images	Poplar Hill	1925	French Renaissance	Charles A. Platt	Glen Cove	Built for Frederick Bailey Pratt in 1925. Later turned into Glengariff Nursing Home. Was left abandoned and now ran as a rehabilitation center of the same name.	^[75]
	Caumsett	1925	Georgian	John Russell Pope	Lloyd Harbor	Built for Marshall Field III, and partially demolished in the early 1950s. Remaining 3 wings are part of Caumsett State Park today.
	Robert D. Pruyn residence	1925	Colonial Revival		Glen Cove	Constructed for Robert D. Pruyn on land leased by John Teele Pratt by an unknown architect. Later given back to the Pratt's, who sold the property in 1956 to Glen Cove City School District.
	Highpool	1926	French Manor	Carrere & Hastings	Brookville	Estate constructed for William Deering Howe, and converted into the Long Island Lutheran Middle & High School in 1959.
	J. Randolph Robinson Residence	1927	Georgian Revival	William Lawrence Bottomley	Brookville	Constructed for J. Randolph Robinson and purchased in 1966 by Long Island University for their Brookville campus. Is now Bush-Brown Hall.
	Chanticlare	1927-1928	English Tudor	Frederick A. Godley	Flower Hill	Unique 42-room Tudor house built for Jesse J. Ricks. After years of being a private residence, attempts were made to save and repurpose the mansion in the 1960s but was eventually torn down. Guest House extant as of 2026 as a private residence.
	Rynwood	1927	Cotswold	Roger Bullard	Glen Head	Built for Samuel A. Salvage and named after his wife, who was nicknamed "Ryn." Many notable designers of the time worked on the house, which is now used by Banfi Vintners as headquarters.
	Mariemont	1927	Federal	John Russell Pope	Brookville	Residence constructed for Henry Wheeler Lowe. Replaced an earlier house destroyed by fire. Later sold to Wiliam E. Hutton II and eventually to Long Island University in 1965. Now Hutton Hall.
	Lannin House	1928	Tudor	Oliver Tajden	East Meadow	Built for Dorothy Lannin as a replacement for another residence that had burnt down. Later used as the Nassau County Historical Museum before being incorporated into Eisenhower Park.
	Adelaide Breevort Hutton residence	1928	Tudor Revival	Hart & Shape	Brookville	Residence constructed for Adelaide Breevort Hutton, daughter of Marjorie Merriweather Post. Later donated to Long Island University along with Post's Hillwood mansion.
	The Chimneys	1929	Tudor Revival	Edgar Irving Williams	Sands Point	Built for Bettie Fleischmann Holmes, and later home to the grandfather of Elizabeth Holmes. In 1944, the house was lent to the War Shipping Administration who occupied it until 1954 when it was sold to the Long Island Jewish Congregation. Now The Community Synagogue of Port Washington.
	Salutation	1929	Georgian Colonial	Roger Bullard	Glen Cove	Built for Junius Spencer Morgan on the former Paul Dana estate "Dosoris." Entire Island placed for sale in 2017 eventually sold.
	Yarrow	1930	Colonial Revival	Bradley Delehanty	Nissequoque	Residence constructed for William J. Ryan in 1930. Currently utilized as the Nissequogue Golf Club.
	Windermere House	1930	Federal		Mill Neck	Constructed for William DeNyse Nichols Perine, and later sold to Robert and Alice Simpson. Still standing and in private hands.
	Bogheid	1938	French Manor	Delano and Aldrich	Glen Cove	Extant private residence built for Helen Prybil. After being abandoned for some time, it was recently renovated and is now for sale.
	Old Orchard	1938	Georgian	Wiliam G. McMillan Jr.	Cove Neck	Constructed for Theodore Roosevelt Jr. on Sagamore Hill estate. Mr Roosevelt only resided there for 3 years and eventually passed away in World War 2. Estate later became Sagamore Hill National Historic Site, including this house which is now a museum.
	The Charles S. Roberston Residence	1938	Georgian Revival	Mott B. Schmidt	Cold Spring Harbor	Constructed for Charles Sammis Robertson on 19 acres. Donated to the Cold Spring Harbor Laboratory in 1976 and used as the Banbury Conference Center since.

New York City

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Libbey Castle/Woodcliff Castle	1857	Medieval	Alexander Jackson Davies	New York City	Built for Augustus C Richards, was demolished in 1931 for the construction of Fort Tryon Park.
	Alexander Turney Stewart House	1869	Second Empire	John Kellum	New York City	Demolished in 1901
	Frederic W. Stevens House	1876	Châteauesque	George Harney	New York City	The house was demolished in 1919
	George Kemp House	1876	Châteauesque	RC Jones	New York City	Demolished in 1910
more images	William K. Vanderbilt House	1882	Châteauesque	Richard Morris Hunt	New York City	Built for William Kissam Vanderbilt and Alva Vanderbilt. Demolished in 1927	^[76]
more images	Villard Houses	1882	Renaissance Revival	McKim, Mead & White	New York City	Today is part of the New York Palace Hotel	^[77]^[78]
	Hutchinson-Alexander Mansion	1882	Châteauesque	George B Post	New York City	Originally built for William J Hutchinson, later sold to Charles Beatty Alexander and Hattie Crocker, the house was greatly enlarged in 1907 and demolished in 1943.
more images	William H. Vanderbilt House	1883	Renaissance Revival	John B. Snook, Charles B. Atwood	New York City	Built for William Henry Vanderbilt. It was later property of Cornelius Vanderbilt III and Grace Vanderbilt. Was demolished in 1947	^[76]
more images	Cornelius Vanderbilt II House	1883	Châteauesque	Richard Morris Hunt George B. Post	New York City	Built for Cornelius Vanderbilt II and Alice Vanderbilt. Demolished in 1926	^[76]^: 25
	Jacob Ruppert Sr House	1883	Second Empire	William Schickel	New York City	Demolished in 1925
more images	Florence and Eliza Vanderbilt House	1883	Châteauesque	John B. Snook	New York City	Built for Florence Vanderbilt and Eliza Vanderbilt. Were demolished in 1917 and 1925 respectively	^[76]
	Isaac Vail Brokaw House	1883	Châteauesque	Rose and Stone	New York City	Built for Isaac Vail Brokaw .Was demolished in 1965
	Louis Comfort Tiffany House	1885	Romanesque, Queen Anne	Louis Comfort Tiffany and Standford White	New York City	Built for Louis Comfort Tiffany and his family. Was demolished in 1936
more images	James Bailey House	1888	Romanesque Revival	Samuel B. Reed	New York City	Built for James Anthony Bailey of the Barnum & Bailey Circus	^[63]
	William Van Duzer Lawrance House	1889	Châteauesque	Richard Morris Hunt	New York City	Demolished in 1937
	Henry Osborne Havemeyer House	1890	Romanesque	Charles Coolidge Haight	New York City	Demolished in 1930
more images	James Hampden Robb and Cornelia Van Rensselaer Robb House	1892	Italian Renaissance Revival	McKim, Mead & White	New York City	Today, a cooperative apartment	^[79]
more images	Henry T. Sloane House	1894	French Renaissance Revival	Carrère and Hastings	New York City	Built for Henry T Sloane. Later owned by Hamad bin Khalifa Al Thani, the former Emir of Qatar^[80]
	Collins P Huntington House	1894	Romanesque	George B Post	New York City	Demolished in 1926
more images	Mrs. William B. Astor House	1896	French Renaissance Revival	Richard Morris Hunt	New York City	Built for Caroline Astor and John Jacob Astor IV. Was demolished around 1926	^[81]
	Charles Tyson Yerkes House	1896	Romanesque	RH Robertson	New York City	Demolished in 1925
	Elbridge Thomas Garry House	1897	Châteauesque	Richard Morris Hunt	New York City	Demolished in 1929
	Josephine Del Drago House	1898	Châteauesque		New York City	Demolished in 1911 for the Knickerbocker Club
more images	Gertrude Rhinelander Waldo House	1898	French Renaissance Revival	Kimball & Thompson	New York City	Today is the Ralph Lauren flagship store	^[19]^[82]
more images	William H. Moore House	1898	Renaissance Revival	McKim, Mead & White	New York City	Formerly the America-Israel Cultural Foundation	^[63]
more images	Harry F. Sinclair House	1898	French Gothic	C. P. H. Gilbert	New York City	Since 1955, it has been owned by the Ukrainian Institute of America	^[83]
more images	Stuyvesant Fish House	1898	Italianate	McKim, Mead and White	New York City	Today, headquarters of Bloomberg Philanthropies	^[84]
more images	Oliver Gould Jennings House	1898	Beaux-Arts	Carrère and Hastings	New York City	Owned by Hamad bin Khalifa Al Thani, the former Emir of Qatar^[80]
	George Crocker House	1899	Beaux-Arts	Brigth & Bacon	New York City	Demolished in 1930
more images	Benjamin N. Duke House	1901	Beaux-Arts	Welch, Smith & Provot	New York City	Owned by Carlos Slim	^[63]
more images	Andrew Carnegie Mansion	1901	Colonial Revival, Georgian Revival	Babb, Cook & Willard	New York City	Today, houses the Cooper-Hewitt, Smithsonian Design Museum	^[85]
more images	Joseph Raphael De Lamar House	1902	Beaux-Arts	C. P. H. Gilbert	New York City	Purchased by the Republic of Poland in 1973 to house its Consulate General	^[86]
	Tryon Hall	1903	Beaux-Arts	Buchman & Fox	New York City	Built for C.K.G. Billings on the highest point on Manhattan, was destroyed by fire in 1926.
more images	James A. Burden House	1905	Italian Renaissance	Warren & Wetmore	New York City	Today, it houses the lower school of the Convent of the Sacred Heart	^[87]
	Howard C. and Irving Brokaw Houses	1905	French Gothic	Rose and Stone	New York City	Built for Howard C Brokaw and Irving Brokaw. Was demolished circa 1965
more images	Morton F. Plant House	1905	Neo-Renaissance	Robert W. Gibson Thierry W. Despont (renovations)	New York City	Today, a Cartier store^[88]	^[89]
more images	Felix M. Warburg House	1906	Châteauesque	C. P. H. Gilbert	New York City	Today, home to the Jewish Museum	^[63]
more images	Charles M. Schwab House	1906	Beaux-Arts	Maurice Hébert	New York City	Demolished in 1947	^[90]
more images	George J. Gould House	1906	French	Horace Trumbauer	New York City	Replaced by an office building in 1963	^[91]
more images	Mrs. O. H. P. Belmont House	1909	Neoclassical	Hunt & Hunt	New York City	Demolished in 1951.	^[92]^[93]
	Paterno Castle	1909	Medieval	John C Watson	New York City	Was Built for Charles V Paterno and demolished in 1938.
more images	William A. Clark House	1911	Beaux-Arts Châteauesque	Austin W. Lord, J. Monroe Hewlett, Washington Hull	New York City	Demolished in 1927.	^[94]
	John D Rockefeller Jr House	1912	Renaissance Revival	William Wells Bosworth	New York City	Built for John D Rockefeller Jr. Was demolished in 1938
more images	Henry Clay Frick House	1914	Beaux-Arts	Carrère and Hastings	New York City	Today, home to the Frick Collection	^[95]
	A.C James Mansion	1914	Beaux-Arts	Allen & Collens	New York City	Was built for Arthur Curtiss James and demolished in 1941.
more images	Willard D. Straight House	1915	Georgian Revival	Delano & Aldrich	New York City	Today, private residence of Bruce Kovner	^[96]^[97]
more images	Otto H. Kahn House	1918	Italian Renaissance	J. Armstrong Stenhouse, C. P. H. Gilbert	New York City	Modeled after the Palazzo della Cancelleria in Rome	^[98]

North Carolina

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Biltmore	1895	Châteauesque	Richard Morris Hunt Frederick Law Olmsted (landscape)	Asheville	Built for George Washington Vanderbilt II, it is the largest house in the U.S.	^[99]
	Alexander Martin Smith House,	1897	Queen Anne	George Franklin Barber	Elkin	Today, a private residence
	Richard Joshua Reynolds House	1900	Queen Anne	George Franklin Barber	Winston-Salem	Demolished in 1940s
	Whalehead Club,	1925	Art Nouveau	Edward Collings Jr. and Marie Louise Label Knight	Corolla	Today, a historic home for the public

Ohio

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Probasco House	1859	Romansque Revival and Gothic	William Tinsley	Cincinnati	Built for Henry Probasco, today is a private residence
	Forest Hill	1878	Second Empire and Stick Victorian		Cleveland	Built for John D Rockefeller, was destroyed by fire in 1917.
	Charles H Bigelow House	1888	Queen Anne	Henry Oswald Wurmser	Findlay
	Sylvester T. Everett House	1885	Richardsonian Romanesque	Charles Frederick Schweinfurth	Cleveland	Demolished in 1938
	Samuel Andrews House	1885	Romanesque	George H. Smith	Cleveland	Demolished in 1923
	Charles F Brush House	1884	Romanesque	George H Smith	Cleveland	Demolished in 1930
	Samuel Mather House	1910	English Revival	Charles Frederick Schweinfurth	Cleveland	Today de University Hall of Cleveland
	Taft House	1820	Greek Revival, Federal	James Hoban (disputed) Alfred Oscar Elzner (additions)	Cincinnati	Today houses the Taft Museum of Art	^[100]
	Scarlet Oaks	1867	Romanesque Revival, Gothic Revival	James Keys Wilson	Cincinnati	Currently, a retirement home affiliated with the Deaconess Hospital	^[69]
	George B. Cox House	1894	Italianate	Samuel Hannaford	Cincinnati	Currently, a branch of the Public Library of Cincinnati	^[63]
more images	Old Governor's Mansion	1904	Colonial Revival, Neo-Georgian eclectic	Frank Packard	Columbus	Today, home to the Columbus Foundation	^[63]
more images	Laurel Court	1907	Beaux Arts, Renaissance	James Gamble Rogers	Cincinnati	Historic house museum and private residence	^[101]
more images	Stan Hywet Hall	1915	Tudor Revival	Schneider, Charles S.; Manning, Warren H.	Akron	Built by Frank Seiberling	^[26]
more images	Pinecroft	1928	Tudor Revival	Dwight James Baum	Cincinnati	Built for Powel Crosley Jr.	^[102]

Oregon

Name	Year built	Style	Architect	City	Notes
Captain George Flavel House	1885	Queen Anne	Carl W. Leick	Astoria	Today a museum
Richard B. Knapp House	1882	Queen Anne	Warren Heywood Williams^[103]	Portland	Demolished in 1951
Charles Mortimer Forbes Residence	1892	Queen Anne	William R. Stokes	Portland	Demolished in 1929
Pittock Mansion	1914	Chateauesque	Edward T. Foulkes	Portland	Abandoned in 1958; Opened as a museum in 1965

Pennsylvania

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Cairnwood	1895	Beaux-Arts	Carrère and Hastings	Bryn Athyn	Owned by the Academy of the New Church	^[26]
	Melmar	1910	Classical Revival	William Cresson Prichett, Jr	Huntingdon Valley	Built for J.B. Lippincott and Joanna Wharton, daughter of Joseph Wharton	^[104]^[105]
	Ogontz	1867	Second Empire		Elkins Park	Built for Jay Cooke, was demolished in 1924 for the construction of another mansion.
more images	Lynnewood Hall	1900	Neoclassical Revival	Horace Trumbauer	Elkins Park	Predominantly vacant since 1952
more images	Elstowe Manor	1898	Italian Renaissance	Horace Trumbauer	Elkins Park		^[106]
more images	Grey Towers	1896	Gothic Revival	Horace Trumbauer	Glenside	Today, part of Arcadia University	^[7]
	Lindenhurst	1883	Romanesque	Edward Alfred Sargent	Jenkintown	Built for John Wanamaker, was destroyed by fire in 1907.
	Sinnott Mansion	1891	Châteauesque	Samuel Huckel Jr.	Lower Merion	Built for Joseph F Sinnott
	Woodmont	1894	Châteauesque	William Lightfoot Price	Gladwyne	Built for Alan Wood Jr., later the residence of evangelist Father Divine, and the center of his International Peace Mission movement. Today is open for tours.
	Scott Mansion	1875	Victorian	Frank Furness	Philadelphia	Built for Thomas A Scott, was demolished in 1913
	Harrison Mansion	1857	Neoclassical, Italianate	Samuel Sloan	Philadelphia	Built for Joseph Harrison Jr, was demolished in 1925
	Disston Mansion	1882	Italianate	Edwin Forrest Durang	Philadelphia	Built for Albert H Disston, son of Henry Disston. Today the house is the Unity Mission Church Home Training School Bible Institute.
	Townsend Castle	1887	Romanesque	GW & WD Hewitt	Philadelphia	Built for John Lister Townsend, today is a private residence.
more images	Clayton	1860s (renovated 1892)	Italianate	Andrew Peebles (renovations) Frederick J. Osterling (renovations)	Pittsburgh	Part of The Frick Pittsburgh
	Frank H. Buhl Mansion	1891	Châteauesque and Romanesque	Charles Henry Owsley	Sharon	Built for Frank H. Buhl, today is a house museum.
more images	Negley–Gwinner–Harter House	1871	Second Empire	Frederick J. Osterling (renovations)	Pittsburgh		^[107]
more images	Baywood Mansion	1880	Second Empire		Pittsburgh		^[108]^[109]
	Schwab-Dixon Mansion	1888	Richardsonian Romanesque	Frederick J. Osterling	North Braddock	Built for Charles M. Schwab	^[110]^[111]^[112]
more images	McCook Mansion	1906	Jacobean Revival	Carpenter & Crocker	Pittsburgh	A boutique hotel and member of Historic Hotels of America	^[113]
	Walmarthon	1913	Mediterranean Revival	David Knickerbacker Lloyd	St. Davids	Built for Charles S Walton, today is part of the Eastern University
more images	Moreland-Hoffstot House	1914	French Renaissance Revival	Irwin, Paul	Pittsburgh		^[69]
	Weigley Mansion	1876-1882	Second Empire	Isaac H. Hobbs	Schaefferstown	Built for William Weigley
	Whitemarsh Hall	1921	Georgian	Horace Trumbauer	Wyndmoor	(demolished 1980)	^[114]
	Widener Mansion	1887	Châteauesque	Willis G Hale	Philadelphia	Destroyed by fire in 1980

Rhode Island

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Kingscote	1839 (remodeled 1870s, remodeled 1880s)	Gothic Revival	Richard Upjohn George C. Mason (1870s renovation) McKim, Mead and White (1880s renovation)	Newport	One of the first summer "cottages" constructed in Newport; owned by the Preservation Society of Newport County and open for tours	^[115]
more images	Malbone Castle	1849 (remodeled 1875)	Gothic Revival	Alexander Jackson Davis Dudley Newton (renovations)	Newport	A private residence not open to the public	^[7]^[116]
more images	Beechwood	1851	Italianate	Downing and Vaux (construction) Richard Morris Hunt (renovations) McKim, Mead & White (renovations)	Newport	Originally built for Daniel Parish, was bought and renovated by William B Astor and Caroline Astor in 1880. Owned by Larry Ellison since 2010 who is creating the "Beechwood Art Museum"	^[117]^[118]^[119]
more images	Chateau-sur-Mer	1852	Second Empire	Seth C. Bradford (construction) Richard Morris Hunt (renovations) Ogden Codman Jr. (design)	Newport	Built for William Shepard Wetmore, was extensively remodeled in 1870s, Today is a museum.	^[120]
	The Reefs	1853	Italianate		Newport	Built for Christopher Wolfe and later buy and remodeled by Harry Payne Whitney and Gertrude Vanderbilt Whitney. Was destroyed by fire in 1942.
	Beaulieu	1859	Second Empire	Downing and Vaux	Newport	Originally built for Federico Luciano Barreda, it was later inhabited by John Jacob Astor III and Cornelius Vanderbilt III, it was remodeled in the 1950s and is currently a private home.
	Chepstow	1860	Italianate	George Champlin Mason Sr.	Newport	Built for Edmund Schermerhorn. Now a museum
	By The Sea	1860	Italianate	George Chaplain Mason Sr	Newport	Built for Caroline Perry Belmont and August Belmont. Was demolished in 1946.
	The Rocks	1864	Stick and Romanesque	John Hubbard Sturgis	Newport	Originally built for Edward Darley Boit, it was later bought and remodeled by Henry Claws. Was demolished in 1945.
	William King Covell III House	1870			Newport	Built for Milton H. Sanford, later owned by William King Covell III, summer residence of Lizzie Borden, now a bed and breakfast
	Eisenhower House	1873	Victorian	George C. Mason & Son	Newport	Built for General Henry Jackson Hunt, later served as Dwight D. Eisenhower's summer residence.
more images	Fairholme	1874–1875	Tudor	Frank Furness	Newport	Built for Fairman Rogers, remodeled in 1905 for John R. Drexel. Today a private residence.	^[121]
more images	William Watts Sherman House	1875	Queen Anne	H. H. Richardson Stanford White (c. 1880 renovations)	Newport	Owned by Salve Regina University	^[122]
more images	Charles H. Baldwin House	1877	Queen Anne Shingle	Potter & Robinson	Newport	Built for U.S. Navy Admiral Charles H. Baldwin	^[123]
more images	The Breakers	1878	Queen Anne	Peabody and Stearns	Newport	Destroyed by fire in 1892 and replaced by The Breakers	^[124]
more images	Vinland Estate	1882	Romanesque Revival	Peabody & Stearns	Newport	Today, McAuley Hall, Salve Regina University	^[125]
	Graystone	1883	Romanesque	George Chaplain Mason & Company	Newport	Demolished in 1938
	Aspen Hall/Rockhurst	1884	Queen Anne	Peabody & Stearns	Newport	Built for H.L Mortimer Brooks. Was demolished in 1955.
	The Cloisters	1885	Shingle	JD Johnston	Newport	Built for Catherine Lorillard Kernochan. Later bought by James T Woodward. Demolished in 1950
	Stoneacre	1885	Shingle	William A Potter	Newport	Built for John W. Ellis; demolished in 1962
	Isaac Bell House	1881–1883	Shingle Style	McKim, Mead, and White	Newport	Built for Isaac Bell Jr.
more images	Seaview Terrace	1885 (remodeled c. 1923)	Châteauesque	Howard Greenley	Newport	Privately owned and is not open for tours	^[126]
more images	William G. Low House	1887	Shingle	McKim, Mead & White	Bristol	Demolished in 1962.	^[127]
more images	Hammersmith Farm	1887	Victorian Shingle	R. H. Robertson Olmsted Brothers (landscape)	Newport	Built for John W. Auchincloss, uncle of Hugh D. Auchincloss (Jacqueline Kennedy's stepfather)	^[128]
	Althorpe	1889–1890	Colonial Revival	Peabody & Stearns	Newport	Built for John Thompson Spencer
more images	Rockhurst (also known as Aspen Hall)	1891	Châteauesque	Peabody & Stearns	Newport	Demolished in 1955 for a residential subdivision	^[129]
more images	Ochre Court	1892	Châteauesque	Richard Morris Hunt	Newport	Owned by Salve Regina University	^[130]
more images	Marble House	1892	Beaux-Arts	Richard Morris Hunt	Newport	Open to the public and run by the Preservation Society of Newport County	^[131]^[26]
more images	Rough Point	1892	English Manorial	Peabody & Stearns	Newport	Built for Frederick William Vanderbilt; Owned and operated by the Newport Restoration Foundation	^[132]
more images	Belcourt	1894	Châteauesque	Richard Morris Hunt (1894) John Russell Pope (1910)	Newport		^[133]
more images	The Breakers	1895	Neo Italian Renaissance	Richard Morris Hunt	Newport	Built for Cornelius Vanderbilt II, replaced the 1878 Breakers mansion (owned by Pierre Lorillard IV)	^[134]
more images	Crossways	1895	Colonial Revival	Dudley Newton	Newport
	President's House	1896	Colonial Revival	Creighton Withers	Newport	Built by the Naval War College for Rear Admiral French Ensor Chadwick,
	Lippitt Castle	1899	Medieval Castle	Robert H Robertson	Newport	Built for Charles Warren Lippitt. Was demolished in 1924.
more images	Vernon Court	1901	French classical	Carrère and Hastings	Newport	Today, home of the National Museum of American Illustration.^[135]	^[136]
more images	The Elms	1901	Classical Revival	Horace Trumbauer	Newport	Open to the public and run by the Preservation Society of Newport County	^[7]^[137]
more images	Rosecliff	1902	French Baroque Revival	McKim, Mead & White	Newport	Open to the public and run by the Preservation Society of Newport County	^[63]
	Castlewood	1905		Edward Payson Whitman	Newport	Built for Josephine S Bruguière, was demolished in 1942.
	Beacon Hill	1911	English Revival	Howells & Stokes	Newport	Built for Arthur Curtiss James, was demolished in 1967.
more images	Miramar	1915	French neoclassical	Horace Trumbauer	Newport	Built for Eleanor Widener. The gardens was designed by landscape architect Jacques Gréber	^[138]
	Belton Court	1905	Medieval Revival	Martin & Hall	Barrington	Built for Frederick Stanhope Peck. Since 2011, Belton Court and the surrounding structures have been predominately vacant.
more images	Bois Doré	1927	French Château	Charles A. Platt	Newport	Later owned by heiress Carolyn Mary Skelly	^[139]

South Carolina

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Calhoun Mansion	1876	Italianate	George W. Williams	Charleston	Open for public tours	^[140]

Tennessee

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Hill Mansion	1881	French Renaissance		Memphis	Built by businessman and newspaper owner Napoleon Hill. Demolished in 1928 to make way for the Sterick Building.	^[141]

Texas


Name	Year built	Style	Architect	City	Notes	Ref.
John H. Hounghton House	1887	Queen Anne	James Wahrenberger	Austin	Demolished in 1973
George Littlefield House	1893	Queen Anne	James Wahrenberger	Austin	Today, part of the campus of the University of Texas at Austin
John Bremond House	1886	Second Empire	James Wahrenberger	Austin	Part of Texas Classroom Teachers Association
Bishop's Palace	1893	Richardson Romanesque	Nicholas J Clayton	Galveston	Built for Walter Gresham, today is open for tours.
Edward Steves Jr. House	1884	Italianante	James Wahrenberger	San Antonio	Built for ammunition magnate and lumber heir Edward Steves Jr. as a new home for him and his new wife; remained a private home.	^[142]
Charles F. A. Hummel House	1884	Italianante	James Wahrenberger & Albert Beckman	San Antonio	Built for sporting goods merchant and gunsmith Charles Hummel; remained a private home.	^[143]

Utah


Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Gardo House	1883	Second Empire	William H. Folsom and Joseph Ridges	Salt Lake City	Gardo House was the official residence of the president of the Church of Jesus Christ of Latter-day Saints (LDS Church) during the terms of John Taylor and Wilford Woodruff. Was demolished on November 26, 1921.

Vermont


Name	Year built	Style	Architect	City	Notes
Wilson Castle	1885	Scottish baronial, Queen Anne, and Romanesque Revival		Proctor	Built for John Johnson, today is a museum.
Hildene Mansion	1905	Georgian Revival	Shepley, Rutan & Coolidge	Manchester	Former summer home of Robert Todd Lincoln, today is a museum
Shelburne Farms	1899	Queen Anne	R. H. Robertson and Frederick Law Olmsted	Shelburne	Today is a nonprofit education center for sustainability

Virginia

Image	Name	Year built	Style	Architect	City	Notes	Ref.
more images	Ellerslie	1856 (extensively remodeled in 1910)	Italian Villa	Robert Young (1857) Carneal and Johnston (1910)	Colonial Heights
more images	Roseland Manor (also known as the Strawberry Banks Manor House)	1887	Châteauesque Queen Anne	Arthur Crooks	Hampton	Destroyed by fire in 1985^[144]	^[144]
more images	Maymont	1893	Victorian	Edgerton S. Rogers	Richmond	Today, a historic house museum and arboretum^[145]	^[69]
more images	Poplar Hill (also known as the Dunnington Mansion)	1897	Victorian		Farmville	8,500 sq. ft. Manor home of tobacco baron Walter Grey Dunnington that has fallen into disrepair^[146]
more images	Berryman Mansion	1900	Colonial Revival		Smithfield	Built by P.D. Gwaltney as a wedding gift for his daughter who married F.R. Berryman.^[147]	^[147]
more images	P. D. Gwaltney Jr. House	1901	Queen Anne	George Franklin Barber	Smithfield	Remained in the Gwaltney family until 2016.^[148]	^[26]
more images	Cedar Hall	1906 (demolished 1976)	Queen Anne	Vance & Allen^[149]	Hampton	Demolished in 1976.^[149]	^[150]^[151]
more images	Swannanoa	1912	Italian Renaissance Revival	Noland & Baskerville	Nelson County		^[26]
more images	Branch House	1916	Tudor Revival, Jacobean Revival	John Russell Pope with Otto R. Eggers	Richmond	Offices of the Virginia Society of the American Institute of Architects (VSAIA) and the Branch Museum of Architecture and Design.^[152]	^[19]
more images	Westbourne	1919	Georgian Revival	W. Duncan Lee	Richmond	Gardens designed by landscape architect Charles F. Gillette	^[153]
more images	Merrywood	1919	Georgian Revival		McLean	Childhood home of Jacqueline Kennedy Onassis; Gardens designed by landscape architect Beatrix Farrand^[154]	^[155]
more images	Selma (Leesburg, Virginia)	1902	Colonial Revival	Noland and Baskerville	Leesburg	Built by Elijah B. White a wealthy Virginia banker who at the time was the largest exporter of grain in the United States.^[156]
	Lewis Ginter House	1892	Romanesque	Harvey L Page and William W Kent	Richmond	Today part of Virginia Commonwealth University

Washington

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Ezra Meeker Mansion	1887	Italianate	Farrell & Darmer	Puyallup	Today a museum
	L. M. Wood House	1901	Italianate		Seattle	Built for merchant Lovett Mortimer Wood, demolished by Wood's widow in the 1920s

Wisconsin

Name	Year built	Style	Architect	City	Notes	Ref.
Pabst Mansion	1892	Flemish Renaissance Revival	George Ferry	Milwaukee	Today a historic house museum	^[26]
Elizabeth Plankinton House	1888	Richardson Romanesque	Edward Townsend Mix	Milwaukee	Demolished in 1980
William Plankinton House	1876	Second Empire and Victorian	Edward Townsend Mix	Milwaukee	Demolished in 1969
John Plankinton House	1856	Italianate		Milwaukee	Originally built for James H Rogers and later buy and remodeled by John Plankinton in 1864. Demolished in 1975.
Holway Mansion	1892	Romanesque and Queen Anne	Hugo Schick and Gustav Stolze	La Crosse	Originally built for N.B. Holway in 1892. Mr. Holway was a Lumber Baron and Local Businessman. The Diocese of La Crosse purchased the residence in 1921 for the Bishop of La Crosse. It later served as a Seminary and finally was being used as a Convent by the late 1950s. The Diocese sold the property in 1974. It currently is run as Castle La Crosse Bed and Breakfast.	^[157]
Valentin Blatz House	1884–1886	Italianate		Milwaukee	Demolished for make way for a planned strip mall in 1964.	^[158]

Wyoming

Image	Name	Year built	Style	Architect	City	Notes	Ref.
	Wyoming Historic Governors' Mansion	1904	Georgian Colonial Revival		Cheyenne	Built for Governor of Wyoming Fenimore Chatterton

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