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    Warren County, NJ Duplexes for Sale

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    Duplex with Detached Garage
    Updated: Sep 24
    Duplex with Detached Garage

    401 W Moore St, Hackettstown, NJ 07840

    $775,000
    3,448 sqft 0.51 AC lot
    Two units: one with 4 bedrooms and 2 full bathrooms; the other with 3 bedrooms and 1.5 bathrooms
    3,448‑square‑foot building constructed in 1900
    0.51‑acre corner lot
    Detached 2‑car garage
    Porch; public water and public sewer
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    Updated Duplex with Garage
    Updated: Aug 4
    Updated Duplex with Garage

    21 N Lincoln Ave, Washington, NJ 07882

    $579,000
    2,764 sqft 0.17 AC lot
    2,764‑square‑foot duplex on a 0.17‑acre lot
    Third unit completed in 2025; residential rental use requires a variance
    Two‑car garage with heat, air conditioning, new wiring, doors, and awning
    Updated kitchen, hickory hardwood floors, nine‑foot ceilings, and Pella windows
    Public water and public sewer
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    Two-Story Duplex with Parking
    Two-Story Duplex with Parking

    17 Railroad Ave, Phillipsburg, NJ 08865

    $280,000
    0.06 AC lot

    Two separate units occupy a compact residential income property with public water and sewer service.

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    Updated Duplex with Flexible Space
    Updated Duplex with Flexible Space

    21 N Lincoln Ave Unit 2, Washington, NJ 07882

    $579,000
    2,764 sqft

    Two-family property with public utilities, renovated interiors, a heated garage, and additional finished space.

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    Two-Unit Duplex with Deck
    Two-Unit Duplex with Deck

    283 Mercer St, Phillipsburg, NJ 08865

    $299,000
    0.09 AC lot

    Two residences offer separate utilities, outdoor space, basement storage, and rear driveway parking.

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    Two-Unit Duplex with Walk-Up Attic
    Two-Unit Duplex with Walk-Up Attic

    394 Lincoln St, Phillipsburg, NJ 08865

    $264,900
    0.07 AC lot

    Two tenant-occupied one-bedroom units include a recently renovated upper apartment and walk-up attic.

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    Updated Duplex with Parking
    Updated Duplex with Parking

    17 Railroad Avenue, Phillipsburg, NJ 08865

    $280,000

    Fully rented two-family property with separate units and a rear parking pad.

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    Two-Unit Duplex with Attic
    Two-Unit Duplex with Attic

    244 Sitgreaves St, Phillipsburg, NJ 08865

    $390,000
    1,998 sqft

    Under-over duplex with separate one- and two-bedroom units, attic storage, and both off-street and on-street parking.

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    Victorian Duplex
    Victorian Duplex

    401 W Moore St, Hackettstown, NJ 07840

    $775,000

    The two residences have distinct bedroom and bath configurations, with a detached garage and backyard on a corner parcel.

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    Updated Duplex with Two Units
    Updated Duplex with Two Units

    122 Summit Ave, Phillipsburg, NJ 08865

    $369,900

    Fully occupied income property with tenant-paid utilities, off-street parking, and covered outdoor areas.

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    Two-Unit Duplex with Fenced Yard
    Two-Unit Duplex with Fenced Yard

    283 Mercer St, Phillipsburg, NJ 08865

    $299,000

    The property includes a private side entrance and separate utility service for each unit.

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    Updated Two-Unit Duplex
    Updated Two-Unit Duplex

    17 Railroad Ave, Phillipsburg, NJ 08865

    $299,000

    Fully rented property with separate living spaces and a rear parking pad.

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    Mixed-Use Building with Apartments
    Mixed-Use Building with Apartments

    26 Main St, Blairstown, NJ 07825

    $149,000

    Two-level configuration combines first-floor commercial space with residential apartments requiring renovation above.

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    Side-by-Side Duplex
    Side-by-Side Duplex

    26-28 Lewis St, Phillipsburg, NJ 08865

    $337,000

    Two-bedroom units offer separate living areas, private yards, and off-street parking.

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    Two-Unit Duplex with Renovated Apartment
    Two-Unit Duplex with Renovated Apartment

    394 Lincoln St, Phillipsburg, NJ 08865

    $264,900

    Corner property with occupied one-bedroom apartments and a walk-up attic.

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    Corner-Lot Duplex with Attic Access
    Corner-Lot Duplex with Attic Access

    62 Summit Ave, Phillipsburg, NJ 08865

    $329,000

    Two-level duplex with one occupied unit, a second available unit, and two rear parking spaces.

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    Renovated Two-Family Duplex
    Renovated Two-Family Duplex

    234 Belvidere Ave #2, Washington, NJ 07882

    $499,999

    Two three-bedroom units are complemented by a three-car garage, extra parking, storage, and a spacious backyard.

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    Renovated Two-Unit Duplex
    Renovated Two-Unit Duplex

    60 Brainard St, Phillipsburg, NJ 08865

    $450,990

    Two finished residences offer distinct layouts, updated kitchens, and separate gas and electric metering.

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    Based on your search, we've compiled Potential Opportunities for your consideration. Besides 18 Active Listings in Warren County, NJ

    Warren County, NJ Duplexes Market Trends and Statistics

    Explore 18 duplexes for sale in Warren County, NJ, showcased through 18 active listings on our real estate platform. These investment opportunities span a total of 10,974 square feet of properties for sale, with an estimated market value of $7,220,689.

    Sale prices for duplexes in Warren County, NJ start at $149,000, averaging $401,149, and reaching up to $775,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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