3400 Prospect St NW

Washington, DC 20007

$11,000,000
Last Sold Price
5
Beds
—Sq. Ft.
— / Sq. Ft.
—
Sq. Ft.
—
per Sq. Ft.
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Closed 3/6/12
Closed 3/6/12
Exterior (Main)

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 requiredExtraordinary 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

Listing Agent

  1. Mark McFadden

    Mark McFadden

    Listing Agent

    Compass

    mark.mcfadden@compass.com

    P: (703)-216-1333

    CallTextEmail

Property Details for 3400 Prospect Street Northwest

Tax ID Number
1204//0063
Ownership
Fee Simple
Condo Coop Association
No
HOA
No
Structure Type
Detached
Style
Federal
Levels/Stories
3+
Waterfront
No
LISTING UPDATED: 04/19/2024 05:02 AM

Property Details for 3400 Prospect Street Northwest

StatusClosed
MLS #1005057152
Days on Market369
Taxes$70,917 / year
HOA Fees-
Condo/Co-op Fees-
Property TypeSingle Family
MLS TypeResidential / Fee Simple
Year Built1787
Lot Size0.51 AC / 22,173 SF
CountyDistrict of Columbia
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Location

Listing Courtesy of Washington Fine Properties, LLC

Sold By Washington Fine Properties, LLC

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Building Information for 3400 Prospect Street Northwest

Stories-Year Built1787Building Size-Lot Size0.51 AC / 22,173 SF

Payment Calculator

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$61,300 per month

30 year fixed, 6.46% Interest

Principal and Interest

$55,391

Property Taxes

$5,910

HOA Dues

$0

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Property Information for 3400 Prospect Street Northwest

Location
Location
  • In City Limits: Yes
  • County: WASHINGTON
Waterfront / Water Access
Waterfront / Water Access
  • Water View: Yes
  • Water Access: No
  • Water Oriented: Yes
  • Navigable Water: No
  • Tidal Water: No
  • Water Body Name: POTOMAC RIVER
  • Water Frontage In Feet: 0.0
  • Riparian Rights Y/N: No
  • Docks Count: 0
  • Dock Type and Features: None
  • Dock/Slip Conveys Y/N: false
  • Boats Power Count: 0
  • Boats Nonpower Count: 0
  • Mean Low Water Feet: .00
  • Distance To Body Of Water: .00
  • Distance To Body Of Water Units: Blocks
  • Remarks Distance To Body Of Water: Less than 1 Block
Taxes and Assessment
Taxes and Assessment
  • Tax Year: 2010
  • Tax Assessed Value: $8,343,200
  • Year Assessed: 2010
  • Improvement Assessed Value: $5,349,850
  • City Town Tax: $70,917
  • Land Assessed Value: $2,993,350
  • Zoning: R3
  • Tax Lot: 63
Lease Information
Lease Information
  • Concessions: No
  • Concessions Amount: $0
Rooms
Main
  • # Bedrooms Count Main Level: 1
  • # Bathrooms Count Main Level: 1
  • # Bathrooms Full Main Level: 1
  • # Bathrooms Half Main Level: 0
Upper Level 1
  • # Bedrooms Count Upper Level: 3
  • # Bathrooms Count Upper Level: 3
  • # Bathrooms Full Upper Level: 3
  • # Bathrooms Half Upper Level: 0
Upper Level 2
  • # Bedrooms Count Upper Level: 1
  • # Bathrooms Count Upper Level: 1
  • # Bathrooms Full Upper Level: 1
  • # Bathrooms Half Upper Level: 0
Lower Level 1
  • # Bedrooms Lower Level: 0
  • # Bathrooms Lower Level: 4
  • # Bathrooms Full Lower Level: 4
  • # Bathrooms Half Lower Level: 0
Lower Level 2
  • # Bedrooms Lower Level: 0
  • # Bathrooms Full Lower Level: 0
  • # Bathrooms Half Lower Level: 0
Rooms
  • Room List: Laundry, Office, Solarium, Workshop, Bedroom 6
  • Stories: Lower 1, Lower 2, Main, Upper 1, Upper 2
Rooms Information
Room 1
  • Room Type: Laundry
  • Room Level: Unspecified
  • Room Exists: Yes
Room 2
  • Room Type: Solarium
  • Room Level: Unspecified
  • Room Exists: Yes
Room 3
  • Room Type: Bedroom 6
  • Room Level: Unspecified
  • Room Exists: Yes
Room 4
  • Room Type: Office
  • Room Level: Unspecified
  • Room Exists: Yes
Room 5
  • Room Type: Workshop
  • Room Level: Unspecified
  • Room Exists: Yes
Building Info
Building Info
  • Total Finished SQFT Units: Square Feet
  • Construction Materials: Brick, Stone
  • Roof: Slate
  • Ext Main Mid-res: http://bright-media.brightmls.com/bright/images/0000/3012/1355/1375/301213551375_512_384_WM_NMODDN7ok8PMvlGz.jpg
  • Basement Type: Outside Entrance, Connecting Stairway, Daylight, Full, Fully Finished, Heated, Improved, Rear Entrance, Walkout Level
  • Room and Floor: Bedrooms-Main Level-1, Bathrooms Full-Main Level-1, Bedrooms-Upper Level 1-1, Bedrooms-Upper Level 1-2, Bedrooms-Upper Level 1-3, Bathrooms Full-Upper Level 1-1, Bathrooms Full-Upper Level 1-2, Bathrooms Full-Upper Level 1-3, Bathrooms Full-Lower Level 1-1, Bathrooms Full-Lower Level 1-2, Bathrooms Full-Lower Level 1-3, Bathrooms Full-Lower Level 1-4, Bedrooms-Upper Level 2-1, Bathrooms Full-Upper Level 2-1
  • # Bathrooms Full: 9
  • # Bathrooms Half: 0
  • Dock Type: None
  • Dock Slip Conveyance: None Available
Lot / Land Information
Lot / Land Information
  • Lot Features: Premium
  • Lot Size Area: 22,173.00
  • Soil Types: Urban Land-Sassafras-Chillum
  • Parcel ID: 16001290
Parking
Parking
  • Type Of Parking: Off Street, Attached Garage
  • Num of Attached Garage Spaces: 12
  • Total Garage Spaces: 12
  • Parking Features: Garage, Parking Space Conveys
  • Garage Features: Covered Parking
Interior Features
Interior Features
  • Interior Features: Butlers Pantry, Kitchen - Gourmet, Dining Area, Built-Ins, Double/Dual Staircase, Upgraded Countertops, Primary Bath(s), Wet/Dry Bar, Wood Floors, Floor Plan - Traditional
  • Fireplace: Yes
  • Fireplaces Count: 9
  • Fireplace Features: Mantel(s)
  • Appliances: Washer/Dryer Hookups Only, Cooktop, Dishwasher, Disposal, Dryer, Icemaker, Intercom, Oven - Double, Oven/Range - Electric, Washer
  • Accessibility Features: None
  • Security Features: Electric Alarm, Intercom, Monitored
  • Virtual Tour URL Unbranded: http://www.homevisit.com/mlsTour?id=47868
Exterior Features
Exterior Features
  • Exterior Features: Secure Storage
  • Outdoor Living Structures: Roof, Terrace
  • Pool: Yes - Personal
  • Personal Pool Features: In Ground
Utilities
Utilities
  • Heating: Yes
  • Cooling Type: Central A/C
  • Cooling Fuel: Electric
  • Heating Type: Forced Air
  • Heating Fuel: Natural Gas
  • Hot Water: Natural Gas
  • Water Source: Public
  • Sewer Septic: Public Sewer
Confidential Data
Listing Office
  • List Agent AOR: Greater Capital Area Association of REALTORS
  • List Agent URL: www.mcfaddenpartners.com

Property History for 3400 Prospect Street Northwest

DateEvent & SourcePriceAppreciation
Jan 31, 2026

Expired

BRIGHT #DCDC2242506

—
Jan 23, 2026

Withdrawn

BRIGHT #DCDC2242506

$29,500,000—
Jan 22, 2026

Temp Off Market

BRIGHT #DCDC2242506

$29,500,000—
DateEvent & SourcePrice
01/31/2026

Expired

BRIGHT #DCDC2242506

—
01/23/2026

Withdrawn

BRIGHT #DCDC2242506

$29,500,000
01/22/2026

Temp Off Market

BRIGHT #DCDC2242506

$29,500,000

For completeness, Compass often displays two records for one sale: the MLS record and the public record.

Schools near 3400 Prospect Street Northwest

This home is within District Of Columbia Public Schools.
Rating
School
Type
Grades
Distance
Hyde-Addison Elementary School
Public - PK to 5
Hardy Middle School
Public - 6 to 8
MacArthur High School
Public - 9 to 11
Duke Ellington School of the Arts
Public - 9 to 12
Rating
School
Distance
Hyde-Addison Elementary School
PublicPK to 5

Hardy Middle School
Public6 to 8

MacArthur High School
Public9 to 11

Duke Ellington School of the Arts
Public9 to 12

School ratings and boundaries are provided by GreatSchools.org and Pitney Bowes. This information should only be used as a reference. Proximity or boundaries shown here are not a guarantee of enrollment. Please reach out to schools directly to verify all information and enrollment eligibility.

Georgetown
Georgetown
A charming village and exclusive enclave for the toniest of Washingtonians. Beyond the White House, Capitol, and monuments, it’s Georgetown that captures the public’s imagination when they think about the glamor of old Washington. From Federal townhouses and Georgian mansions on gas-lit streets to...
Georgetown Guide

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No guarantee, warranty or representation of any kind is made regarding the completeness or accuracy of descriptions or measurements (including square footage measurements and property condition), such should be independently verified, and Compass, Inc., its subsidiaries, affiliates and their agents and associated third parties expressly disclaims any liability in connection therewith. Photos may be virtually staged or digitally enhanced and may not reflect actual property conditions. Offers of compensation are subject to change at the discretion of the seller. No financial or legal advice provided. Equal Housing Opportunity.

Listing Courtesy of Washington Fine Properties, LLC

© 2026 Bright MLS. All rights reserved. All information is deemed reliable, but accuracy is not guaranteed. Listing information is from various brokers who participate in IDX and not all listings may be visible on the site. The property information being provided is for the consumer’s personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data last updated on 04/19/2024 05:02 AM