Date
Details
Price
Change
Source
3/09/2026
Listed
$10,750,000
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
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Property Description
Prominently sited in prestigious Observatory Circle, the historic Heurich-Parks House at 3400 Massachusetts Ave, NW presents a rare opportunity to own a fully reconstructed Washington estate. Originally built in 1925 by architect Albert S.J. Atkinson and once home to Christian Heurich Jr., a philanthropic businessman, as well as Marshall Parks, known as the "father of pediatric ophthalmology", this distinguished Spanish Mission-style residence was masterfully reconstructed and expanded in 2017 with designs by renowned BarnesVanze Architects, seamlessly blending historic provenance with modern luxury. Set on a beautifully landscaped and level 0.39-acre lot with irrigation, the property is introduced by a grand circular driveway and features a detached 2-car garage with guest house studio above. Encompassing approximately 13,900 square feet, the residence offers 7 bedrooms, 9 full baths, 2 half baths, and an elevator. The main level is defined by 9-foot ceilings and elegant entertaining spaces, complemented by a stunning open kitchen with marble countertops, herringbone floors, and a sunlit breakfast room. Designed for both grand-scale living and everyday comfort, the home includes an extraordinary indoor 31' x 12' swimming pool with pool bath, bar, and Desert Air dehumidification system.  A convenient main level bedroom suite also completes this level. The luxurious owner's suite features a spa-inspired bath and dual walk-in closets. There are four other bedroom suites on this level. The expansive lower level offers a recreation room, exercise room, wine storage, laundry, full bath with sauna, and multiple storage rooms. A truly exceptional offering combining architectural significance, modern amenities, and premier location adjacent to the Naval Observatory and Vice President's Mansion!
Full Property Details
Full Property Details for 3400 Massachusetts Ave NW
General
- Price: $10,750,000
- Taxes: $60,824 (2025)
- Status: Active
- Type: Single Family
- Source: BrightMLSMidAtlantic
- MLS ID: DCDC2246924
- Updated: 3/10/2026
- Added to Site: 5 day(s) ago
Interior
- Interior Features: Elevator, Sauna
- Fireplace: Yes
- Number of Fireplaces: 1
Rooms
Bathrooms
- Total Bathrooms: 11
- Full Bathrooms: 9
- Half Bathrooms: 2
- Upper Floor Baths: 6
- Upper - Full Baths: 6
- Main Floor Baths: 4
- Main - Full Baths: 2
- Main - 1/2 Baths: 2
- Lower Floor Baths: 1
- Lower - Full Baths: 1
Bedrooms
- Total Bedrooms: 7
- Bedrooms Upper: 6
- Bedrooms Main & Up: 1
Additional Information
- Pool: Yes
- Private Pool: Yes
- Pool Description: Indoor
- Security/Safety: Electric Alarm, Exterior Cameras
Exterior
- Porch/Patio/Deck: Porch(es), Patio(s)
Parking
- Garage: Yes
- Garage Spaces: 2
- Total Spaces: 12
- Parking Type: Detached Garage, Driveway
- Garage Description: Garage Door Opener
Location
- County: WASHINGTON
- Subdivision: OBSERVATORY CIRCLE
- Driving Directions: Between Observatory Circle and Edmunds Street
- City Limits: Yes
School Information
- School District: District Of Columbia Public Schools
Heating & Cooling
- Central air: Yes
- Cooling Type: Central A/C
- Cooling Fuel: Electric
- Heating Type: Heat Pump(s)
- Heating Fuel: Natural Gas
- Water Heater: Natural Gas
Utilities
- Sewer: Public Sewer
- Water: Public
Structural Information
- Architectural Style: Spanish
- Structure Type: Detached
- Architect: BarnseVanze/Albert S.J. Atkinson
- Construction: Brick
- Basement: Yes
- Basement Desc.: Full, Fully Finished
- Foundation: Slab, Other
- Elevator(s ): 1
- Stories Description: Lower 1, Main, Upper 1
- Square Feet: 13,900
- Sq. Ft. Source: Estimated
- Living Area: 12,200 Sq. Ft.
- Finished Above Grnd: 8,900 Sq. Ft.
- Finished Below Grnd: 3,300 Sq. Ft.
- Unfin. Above Grnd: 950 Sq. Ft.
- Year Built: 1925
- Year Built Source: Estimated
Unit Information
Unit 1
- Bathrooms-Lower: 1
Additional Structures
- Other Structures: Guest House
Lot Features
- Lot Size (Acres): 0.39
- Lot Size (Sq. Ft.): 17,034
- Lot Size Source: Assessor
- Zoning: RES
Financial Considerations
- Price Per Sq. Ft.: $1,207.87
- Assessment Year: 2025
- City/TownTax: $60,824
- City/TownTax Freq: Annually
- County Tax Freq: Annually
- Tax w/Assessment: $6,543,050
- Tax Amount: $60,824
- Tax Year: 2025
- Tax Total Finished Sq. Ft.: 10557
Disclosures and Reports
- Ownership: Fee Simple
- Lot Number: 36
Listed by TTR Sotheby's International Realty, Robert Hryniewicki and TTR Sotheby's International Realty, Christopher R Leary
We Value Your Privacy
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We Value Your Privacy
Listing agents
— 3400 Massachusetts Ave NW —
Robert Hryniewicki
TTR Sotheby's International Realty
Christopher R Leary
TTR Sotheby's International Realty
Listing Office Email: jtaylor@ttrsir.com
NMLS#: 1598647Get Pre-Approved Today
Schools
Schools serving 3400 Massachusetts Ave NW
School District:District of Columbia Public Schools
| Name | Grades | Distance |
|---|---|---|
Stoddert Elementary School 4001 Calvert Street Northwest, Washington, DC 20007 | PK-5 | 0.6 mi |
Hardy Middle School 1819 35th Street Northwest, Washington, DC 20007 | 6-8 | 0.6 mi |
Disclaimer:
School attendance boundaries provided by ATTOM Data Solutions and are for reference only. Contact the school directly to verify enrollment eligibility.
Price & Sales History for 3400 Massachusetts Ave NW
Tax History
Tax History for 3400 Massachusetts Ave NW
Year
Property Taxes
Change
Tax Assessment
Change
2025
$60,824
14%
$6,457,430
3%
2024
$53,446
23%
$6,287,760
61%
2023
$43,357
35%
$3,913,880
4%
2022
$32,126
2%
$3,779,580
2%
2021
$31,535
—
$3,710,020
—
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Estimate the Cost
Estimate the Cost for 3400 Massachusetts Ave NW
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- Active
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Listed by Marin Hagen & Sylvia Bergstrom (202) 257-2339
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- Townhouse
- Active
- Updated 1 day ago
- 2Beds
- 2Total Baths
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- Updated 2 days ago
- 5Beds
- 3Total Baths
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3400 Massachusetts Avenue NW, Washington, DC 20007 (MLS# DCDC2246924) is a Single Family property with 7 bedrooms, 9 full bathrooms and 2 partial bathrooms. 3400 Massachusetts Avenue NW is currently listed for $10,750,000 and was received on March 09, 2026. Want to learn more about 3400 Massachusetts Avenue NW? Do you have questions about finding other Single Family real estate for sale in Washington? You can browse all Washington real estate or contact a Coldwell Banker agent to request more information.