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$389,900 Just Listed
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Property Description
Welcome to this beautifully upgraded waterfront residence at Harbour Square, where exceptional privacy, refined smart-home enhancements, and tranquil garden and water views come together in the heart of DC's Southwest Waterfront. This stylish 1-bedroom, 1-bath home offers an open, light-filled layout with floor-to-ceiling sliding glass doors leading to a private balcony overlooking the lush Loggia and water garden beyond. Residents also enjoy rooftop terraces with sweeping views of the river and monuments. Inside, the home blends comfort and sophistication with wood flooring, custom built-ins, and a seamless flow that is equally well suited to everyday living and effortless entertaining. The kitchen is thoughtfully designed with granite countertops, a spacious island, stainless steel appliances, and a GE Profile induction range. An in-unit LG washer and dryer add convenience. The generously sized bedroom is tucked privately away from the main living area and features three closets, creating a peaceful retreat with excellent storage. The updated bath is finished with floor-to-ceiling tile, a sleek modern vanity, and a glass-enclosed shower. A standout feature of this residence is its thoughtful collection of premium upgrades. The Lutron intelligent lighting system offers customizable scenes, remote control, scheduling, and automated lighting adjustments. Additional enhancements include 3M sun-control window film and Bali dual motorized roller shades with both room-darkening and solar functionality. Together, these upgrades materially enhance comfort, convenience, efficiency, and overall appeal, elevating the home into a more premium category. What truly sets this home apart, however, is its remarkable sense of quiet. Reinforced concrete construction on all four walls, as well as the ceiling and floor, creates exceptional sound insulation and a rare feeling of calm, privacy, and permanence that is increasingly hard to find in city living. Storage is another rare advantage, with seven closets, additional storage, and bike storage in the building. Harbour Square is a historic, pet-friendly cooperative set along the Washington Channel on beautifully landscaped grounds with reflecting pools and gardens. This amenity-rich community offers indoor pool, fitness centers, 24-hour concierge service, outdoor grills, laundry facilities, electric vehicle chargers, rental parking, bike storage, and additional storage. The monthly co-op fee includes all utilities, cable TV, high-speed internet, property taxes, maintenance, reserves, building insurance, and more, creating an exceptionally convenient and comprehensive ownership experience. Just moments from The Wharf, Arena Stage, Nationals Park, Audi Field, The Anthem, Safeway, CVS, and the Southwest Farmers Market, this location offers the very best of waterfront city living. With easy access to Metrobus, water taxis, Waterfront Metro, and L'Enfant Plaza, commuting throughout DC, Maryland, and Virginia is effortless. Experience a rare combination of waterfront serenity, substantial construction, modern convenience, and vibrant city access at one of Southwest's most distinctive communities.
Full Property Details
Full Property Details for 510 N St SW #N422
General
- Price: $389,900
- HOA FEE: $1,257/month
- Taxes: (2026)
- Status: Active
- Type: Condo
- Source: BrightMLSMidAtlantic
- MLS ID: DCDC2254360
- Updated: 4/13/2026
- Added to Site: 4 day(s) ago
Rooms
Bathrooms
- Total Bathrooms: 1
- Full Bathrooms: 1
- Main Floor Baths: 1
- Main - Full Baths: 1
Bedrooms
- Total Bedrooms: 1
- Bedrooms Main & Up: 1
Additional Information
- Shared Amenities: Club House, Concierge, Elevator, Exercise Room, Extra Storage, Fitness Center, Laundry Facilities, Pool - Indoor, Security, Swimming Pool
- Shared Pool: Yes
- Pool: Yes
Parking
- Parking Type: Off Street
Location
- County: WASHINGTON
- Subdivision: SOUTHWEST WATERFRONT
- Building Name: HARBOUR SQAURE
- Driving Directions: From M St., Southwest, head south on 4th Street, take a right onto N Street and approach the gatehouse at 500 N Street. They will allow temporary parking
School Information
- School District: District Of Columbia Public Schools
Community
- Assoc. Fees Include: Air Conditioning, Cable TV, Electricity, Ext Bldg Maint, High Speed Internet, Lawn Maintenance, Pool(s), Reserve Funds, Sewer, Snow Removal, Taxes, Trash, Water
- Pets Allowed: Yes
- Pets: Size/Weight Restriction, Cats OK, Dogs OK
Heating & Cooling
- Cooling Type: Convector
- Cooling Fuel: Electric
- Heating Type: Convector
- Heating Fuel: Other
- Water Heater: Other
Utilities
- Sewer: Public Sewer
- Water: Public
Structural Information
- Architectural Style: Mid-Century Modern
- Structure Type: Mid-Rise 5 - 8 Floors
- Construction: Brick
- Entry Floor Number: 4
- Stories Description: Main
- Square Feet: 777
- Sq. Ft. Source: Estimated
- Living Area: 777 Sq. Ft.
- Finished Above Grnd: 777 Sq. Ft.
- Year Built: 1966
- Year Built Source: Estimated
Financial Considerations
- Price Per Sq. Ft.: $501.8
- Condo Fee: $1,257
- Condo Fee Freq: Monthly
- Tax Year: 2026
Disclosures and Reports
- Ownership: Cooperative
- Condo: Yes
Listed by Compass, Andrew A Peers
Get Pre-Approved Today
Schools
Schools serving 510 N St SW #N422
School District:District of Columbia Public Schools
| Name | Grades | Distance |
|---|---|---|
Amidon-Bowen Elementary School 401 I Street Southwest, Washington, DC 20024 | K-5 | 0.4 mi |
Jefferson Middle School Academy 801 7th Street Southwest, Washington, DC 20024 | 6-8 | 0.5 mi |
Eastern High School 1700 East Capitol Street Southeast, Washington, DC 20003 | 9-12 | 2.4 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 510 N St SW #N422
Date
Details
Price
Change
Source
4/10/2026
Listed
$389,900
—
MLS
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.
Tax History
Tax History for 510 N St SW #N422
Year
Property Taxes
Change
Tax Assessment
Change
2025
$902,458
1%
$143,222,630
2%
2024
$890,013
-2%
$140,414,340
—
2023
$910,202
2%
$140,414,340
2%
2022
$891,230
8%
$137,661,120
2%
2021
$827,221
-5%
$134,961,880
—
2020
$871,818
10%
$134,290,430
6%
2019
$794,085
10%
$127,027,040
9%
2018
$724,701
-25%
$116,669,590
2%
2017
$972,247
62%
$114,381,950
1%
2016
$601,818
10%
$113,619,750
21%
2015
$547,726
9%
$94,267,070
5%
2014
$500,538
—
$89,376,520
—
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 510 N St SW #N422
510 N Street SW #N422, Washington, DC 20024 (MLS# DCDC2254360) is a Condo property with 1 bedroom and 1 full bathroom. 510 N Street SW #N422 is currently listed for $389,900 and was received on April 10, 2026. Want to learn more about 510 N Street SW #N422? Do you have questions about finding other Condo real estate for sale in Washington? You can browse all Washington real estate or contact a Coldwell Banker agent to request more information.

