Quality Hill, Washington, D.C.

Significant dates

Quality Hill
U.S. National Register of Historic Places
D.C. Inventory of Historic Sites



Location	3425 Prospect Street, N.W. Washington, D.C.
Coordinates	38°54′22″N 77°4′9″W / 38.90611°N 77.06917°W / 38.90611; -77.06917Coordinates: 38°54′22″N 77°4′9″W / 38.90611°N 77.06917°W / 38.90611; -77.06917
Built	1798
Architectural style	Georgian
Part of	Georgetown, Washington, D.C. (ID67000025)
NRHP reference No.	72001431 ^[1]
Added to NRHP	March 16, 1972
Designated DCIHS	November 8, 1964

Quality Hill, also known as the John Thomson Mason House, is a historic building, located at 3425 Prospect Street, Northwest, Washington, D.C., in the Georgetown neighborhood.

History[]

John Thomson Mason, a nephew of George Mason, bought the house in 1798. John and Elizabeth Teakle bought the house in 1807. Dr. Charles Worthington bought the house in 1810. Albert Adsit Clemons, owner of Halcyon House bought the house in 1915. Senator and Mrs. Claiborne Pell bought the house in 1961.^[2]

References[]

v t Georgetown, Washington, D.C.
History	Organic Act of 1801 Organic Act of 1871 Street renaming The Exorcist Washington County, D.C. Washington and Georgetown Railroad
Historic sites	Car Barn Chesapeake and Ohio Canal City Tavern Club Corcoran School Customhouse and Post Office Dumbarton House Dumbarton Oaks Evermay Exorcist steps Farmers and Mechanics Bank Forrest-Marbury House Georgetown Market Georgetown Neighborhood Library Georgetown University Astronomical Observatory Halcyon House John Stoddert Haw House Healy Hall Laird-Dunlop House Lauinger Library McDonough Gymnasium Old North Old Stone House Isaac Owens House Newton D. Baker House Prospect House Quality Hill Smith Row Statue of John Carroll Three Sisters Tidewater Lock Tudor Place Van Ness Mausoleum Vigilant Firehouse Volta Laboratory and Bureau
Houses of worship	Christ Church Dahlgren Chapel Georgetown Visitation Monastery Grace Episcopal Church Holy Trinity Catholic Church Kesher Israel Mount Zion United Methodist Church Oak Hill Cemetery Chapel St. John's Episcopal Church
Streets and bridges	Aqueduct Bridge Dumbarton Bridge K Street Bridge Key Bridge L Street Bridge M Street M Street Bridge P Street P Street Bridge Pennsylvania Avenue Bridge Whitehurst Freeway Wisconsin Avenue
Education	British International School of Washington Duke Ellington School of the Arts Georgetown Female Seminary Georgetown University Georgetown Visitation Preparatory School Holy Trinity School
Parks and cemeteries	Chesapeake and Ohio Canal National Historical Park Dumbarton Oaks Park Georgetown Waterfront Park Francis Scott Key Memorial Glover-Archbold Park Jesuit Community Cemetery Montrose Park Mount Zion Cemetery Oak Hill Cemetery Presbyterian Burying Ground
Establishments	Baked & Wired Embassy of France Embassy of Mongolia Embassy of Thailand Embassy of Ukraine Embassy of Venezuela Filomena Ristorante Four Seasons Hotel Georgetown Cupcake Georgetown Park Georgetown Visitation Monastery House of Sweden Martin's Tavern MedStar Georgetown University Hospital Potomac Boat Club Ritz-Carlton Suter's Tavern Washington Canoe Club Washington Harbour
Northwest, Washington, D.C. Category

v t U.S. National Register of Historic Places
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Lists by associated state	Federated States of Micronesia Marshall Islands Palau
Other areas	District of Columbia Morocco
Related	National Historic Preservation Act of 1966 Historic Preservation Fund List of jails and prisons on the National Register of Historic Places University and college buildings listed on the National Register of Historic Places
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