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3400 Prospect St Nw Unit 10, Washington, DC 20007

$28,000,000
: 5
BD
: 9
BA
: 30,000
SqFt

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Sold Price: $28,000,000
List Price: $28,000,000
Closing Date: Jan 12, 2026
Status: CLOSED
MLS#: DCDC2287620
Bedrooms: 5
Bathrooms: 9
Full Baths: 5
Half Baths: 4
Living Area: 30,000
Lot Size (Acres): 0.51
Style: Federal
Year Built: 1787
County: Washington
School District: District Of Columbia Public Schools

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Property Description

Extraordinary Halcyon House! Over 30,000 square feet in this historically designated mansion overlooking the Potomac River. Sited on a dominant 1/2-acre hill. Once owned and expanded by Mark Twain's nephew. Masterful restoration-pristine condition. Most appropriate for either a single family or a qualified non-profit group. *REGISTRATION FORM REQUIRED

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Additional Information

Subdivision: Georgetown
Building Name: Halcyon House
Interior Features: Walk-In Pantry, Gourmet Kitchen, Separate Dining Room, Double/Dual Staircase, Upgraded Countertops, Bath in Primary Bedroom, Bar, Wood Floors, Traditional Floorplan
School District: District Of Columbia Public Schools
Elementary School: Hyde-Addison
Middle School: Hardy
High School: Wilson Senior
Fireplaces: 9
Garage Spaces: 12
Exterior Features: Storage
View: Water
Heating: Forced Air
Cooling: Central Air
Roof: Slate
Water: Public
Sewer: Public Sewer
Basement: Other