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For sale
    • $365,000

    510 N St SW APT N422, Washington, DC 20024

    1beds
    777sqft
    : 
    $3,448/mo
    Get pre-qualified
    Condominium
    Built in 1966
    -- sqft lot
    $359,300 Zestimate®
    $470/sqft
    $1,258/mo HOA

    What's special

    Thoughtful designWalking pathsExceptional storageIndoor swimming poolRooftop terracesFitness centerLandscaped six-acre setting
    Abundance of energy Fills YOUR Splendid sundillfed home. Fully renovated from top to bottom, this light-filled one-bedroom residence at Harbour Square combines thoughtful design, exceptional storage, and one of Southwest Washington’s most distinctive residential settings. With approximately 777 square feet, 7 closets, and an open, spacious layout, N422 has been carefully updated for comfortable modern living. A wall of floor-to-ceiling glass fills the home with natural light and opens to a private balcony overlooking the Loggia Gardens and tranquil water garden. The renovated kitchen centers around a generous island with seating and abundant storage and features stainless steel appliances and a GE Profile induction range. An in-unit washer and dryer adds a convenience rarely found in older cooperative buildings. The marble bathroom features floor-to-ceiling finishes and a glass-enclosed shower. Additional upgrades include Lutron intelligent lighting, dual motorized window shades, and 3M sun-control window film—small luxuries that make a noticeable difference in everyday living. One of HARBOUR SQUARE'S greatest advantages is how much is included in the $1,257/month HOA fee. Unlike many condominium HOA fees, Harbour Square’s fee includes major expenses homeowners often pay separately, including property taxes, utilities, internet, cable television, water, sewer and trash, management, 24-hour services, capitol reserve, and onsite maintenance. When those costs are considered together, the monthly fee represents substantially more than building maintenance alone. Harbour Square offers much more than an apartment building. Its landscaped six-acre setting, expansive lawns, water gardens, walking paths, rooftop terraces, indoor swimming pool, fitness center, 24-hour gatehouse, and staffed front desk create a comfortable residential environment in the heart of the city. Residents who enjoy getting to know their neighbors will also find an active, friendly community and opportunities to take part in Harbour Square’s social life. And the location is hard to match. The Waterfront Metro is about a block away, as is The Wharf, with restaurants, shops, music venues, Arena and Anthem Stages, waterfront recreation, and water taxi service. Walk along the Washington Channel, head to the Smithsonian museums and National Mall, or continue on to the U.S. Capitol—all without giving up the quiet gardens and waterfront setting waiting at home. N422 offers a rare combination: a thoroughly renovated home, remarkable storage and thoughtful upgrades, an unusually comprehensive monthly fee, an engaged neighborhood community, and one of Washington’s most convenient waterfront locations.
    95 days
    321
    7

    Zillow last checked:

    Listing updated:

    Listed by:

    Nancy Pulley 301-254-6244,

    Long & Foster Real Estate, Inc.

    Source: Bright MLS,MLS#: DCDC2274226MLS Logo

      Facts & features

      Interior

      Bedrooms & bathrooms
      • Bedrooms: 1
      • Bathrooms: 1
      • Full bathrooms: 1
      • Main level bathrooms: 1
      • Main level bedrooms: 1
      Rooms
      • Room types: Living Room, Kitchen, Bedroom 1
      Bedroom 1
      • Features: Flooring - Engineered Wood
      • Level: Main
      • Area: 192 Square Feet
      • Dimensions: 12 X 16
      Kitchen
      • Features: Flooring - Engineered Wood
      • Level: Main
      • Area: 90 Square Feet
      • Dimensions: 10 X 9
      Living room
      • Features: Flooring - Engineered Wood, Balcony Access
      • Level: Main
      • Area: 304 Square Feet
      • Dimensions: 16 X 19
      Heating
      • Convector, Natural Gas
      Cooling
      • Convector, Electric
      Appliances
      • Included: Microwave, Built-In Range, Dishwasher, Disposal, Dryer, Exhaust Fan, Oven, Oven/Range - Electric, Refrigerator, Stainless Steel Appliance(s), Washer, Gas Water Heater
      • Laundry: Dryer In Unit, In Unit
      Features
      • Open Floorplan, Kitchen Island, Recessed Lighting, Combination Dining/Living, Combination Kitchen/Living, Combination Kitchen/Dining, Bathroom - Tub Shower, Soaking Tub
      • Flooring: Wood
      • Doors: Sliding Glass
      • Windows: Insulated Windows, Energy Efficient, Screens, Sliding, Window Treatments
      • Has basement: No
      • Has fireplace: No
      Interior area
      • Total structure area: 777
      • Total interior livable area: 777 sqft
      • Finished area above ground: 777

      Property

      Parking
      • Total spaces: 1
      • Parking features: Basement, Inside Entrance, Underground, Garage Faces Side, Covered, Assigned, On-site - Rent, Parking Fee, Private, Secured, Garage
      • Attached garage spaces: 1
      • Details: Assigned Parking
      Accessibility
      • Accessibility features: None
      Features
      • Levels: Five
      • Stories: 5
      • Patio & porch: Roof Deck
      • Exterior features: Barbecue, Extensive Hardscape, Lighting, Storage, Sidewalks, Water Falls, Water Fountains, Balcony
      • Pool features: Community
      • Fencing: Partial
      • Has view: Yes
      • View description: Courtyard, Water
      • Has water view: Yes
      • Water view: Water
      • Waterfront features: Canal
      • Body of water: Washington Channel
      Lot
      • Features: Cul-De-Sac, Landscaped, Level, Rear Yard, Private, Vegetation Planting, Premium, Open Lot, No Thru Street, Urban, Unknown Soil Type
      Details
      • Additional structures: Above Grade
      • Parcel number: NO TAX RECORD
      • Zoning: R
      • Special conditions: Standard

      Construction

      Type & style
      • Home type: Cooperative
      • Architectural style: Contemporary,Mid-Century Modern
      • Property subtype: Condominium
      • Attached to another structure: Yes
      Materials
      • Stone
      Condition
      • New construction: No
      • Year built: 1966
      • Major remodel year: 2016
      Details
      • Builder model: Sensational Sunshine

      Utilities & green energy

      • Sewer: Public Sewer
      • Water: Public
      • Utilities for property: Cable Connected, Electricity Available, Sewer Available

      Community & HOA

      Community
      • Features: Pool
      • Security: Security Gate
      • Condo and coop fee: $1,258 monthly
      • Subdivision: Sw Waterfront
      HOA
      • Has HOA: No
      • Amenities included: Cable TV, Elevator(s), Fitness Center, Storage, Gated, Library, Party Room, Indoor Pool, Security, Other, Common Grounds, Community Center
      • Services included: Air Conditioning, Cable TV, Common Area Maintenance, Electricity, Maintenance Structure, Heat, Internet, Maintenance Grounds, Management, Pool(s), Reserve Funds, Security, Sewer, Snow Removal, Taxes, Trash, Water
      • HOA name: Harbour Square
      Location
      • Region: Washington

      Financial & listing details

      • Price per square foot: $470/sqft
      • Tax assessed value: $10,000
      • Annual tax amount: $1,758
      • Date on market: 7/19/2026
      • Listing agreement: Exclusive Right To Sell
      • Listing terms: Cash,Conventional
      • Ownership: Cooperative

        Estimated market value

        $359,300

        $341,000 - $377,000

        $2,122/mo

        Price history

        DateEventPrice
        7/19/2026Listed for sale$365,000-6.4%$470/sqft
        Source: Bright MLS #DCDC2274226 Report a problem
        7/6/2026Listing removed$389,900$502/sqft
        Source: Bright MLS #DCDC2254360 Report a problem
        4/10/2026Listed for sale$389,900+8.6%$502/sqft
        Source: Bright MLS #DCDC2254360 Report a problem
        11/11/2014Listing removed$359,000$462/sqft
        Source: Weichert, REALTORS #DC8477513 Report a problem
        10/11/2014Listed for sale$359,000$462/sqft
        Source: Weichert, REALTORS #DC8477513 Report a problem

        Public tax history

        Tax history is unavailable.

        Monthly payment

        Est. payment

        Payment breakdown

        Explore the cost of this home by adjusting the details. Changes won't be saved.
        All calculations are estimates and provided by Zillow, Inc. for informational purposes only. Actual amounts may vary.
        HOA fees may include property taxes on listings classified as Co-Ops. Contact the listing agent and/or owner for fee details.
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        Climate risks

        Neighborhood: Southwest Waterfront

        Getting around

        84 / 100
        Very Walkable
        92 / 100
        Biker's Paradise

        Nearby schools

        GreatSchools rating
        Schools provided by the listing agent
        • District: District Of Columbia Public Schools

        Source: Bright MLS. This data may not be complete. We recommend contacting the local school district to confirm school assignments for this home.

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