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    Middlesex County, NJ Duplexes for Sale

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    Duplex with Garage
    Duplex with Garage

    307 Rock Ave, Piscataway, NJ 08854

    $680,000
    0.17 AC lot

    Two residential units offer matching two-bedroom, one-bath layouts, with one currently occupied and the other vacant.

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    Duplex with Detached Two-Car Garage
    Duplex with Detached Two-Car Garage

    610 Cortlandt St, Perth Amboy, NJ 08861

    $539,000
    0.06 AC lot

    Two-family home with separate utilities, basement access, and a detached two-car garage with a long driveway for parking.

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    Renovated Two-Family Home
    Renovated Two-Family Home

    48 5th Street, Fords, NJ 08863

    $689,900

    Renovated two-family home with central air, forced-air heat, and private laundry for each unit.

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

    603 Lincoln Blvd, Middlesex, NJ 08846

    $749,999
    0.14 AC lot

    Two residential units offer varied layouts, bonus attic rooms, and approximately 20 driveway parking spaces.

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    Renovated Ranch Duplex
    Renovated Ranch Duplex

    149B Maclura Plz, Monroe Twp, NJ 08831

    $429,900
    1,078 sqft

    Two-bedroom, two-bath home with an enclosed sunroom, updated kitchen, central air, and public utilities.

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    2-Unit Home with Garage
    2-Unit Home with Garage

    1207 Foster Avenue, South Plainfield, NJ 07080

    $769,000
    0.55 AC lot

    Two-level residential income property with separate living areas, public utilities, and a garage.

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    Two-Family Home with Garage
    Two-Family Home with Garage

    1207 Foster Ave, South Plainfield, NJ 07080

    $769,000
    0.55 AC lot

    Two residential units provide separate kitchens, living areas, and flexible occupancy options.

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    Two-Unit Brick Duplex with Garage Loft
    Two-Unit Brick Duplex with Garage Loft

    55 Juliet Street, New Brunswick, NJ 08901

    $599,000
    0.11 AC lot

    Legal two-family brick home zoned R-4 featuring off-street parking, an attached garage with loft storage, and enclosed rear porch.

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    Two-Story Duplex with Private Driveways
    Two-Story Duplex with Private Driveways

    Iselin, NJ 08830

    $729,999
    0.22 AC lot

    Two residential units offer private driveways, varied bedroom layouts, and a full basement.

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    Brick Duplex With Finished Basement
    Brick Duplex With Finished Basement

    800 Central Place, Perth Amboy, NJ 08861

    $549,000
    0.04 AC lot

    Two residential units include dedicated laundry and additional finished space below grade.

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    Two-Family Duplex with Private Yard
    Two-Family Duplex with Private Yard

    27 Thomas St, South River, NJ 08882

    $589,999

    Two residential units with separate outdoor access and a newly constructed two-car garage on a fully fenced lot.

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    Side-by-Side Duplex with Basements
    Side-by-Side Duplex with Basements

    11 Mayfield Pl, Metuchen, NJ 08840

    $1,099,000

    Two residential units offer private basements, driveways, and fenced backyards.

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    Two-Unit Duplex with Basement
    Two-Unit Duplex with Basement

    237 Middlesex Ave, Iselin, NJ 08830

    $729,999

    Income-producing residential property with separate driveways and a flexible two-level layout.

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    Two-Unit Duplex with Solar Panels
    Two-Unit Duplex with Solar Panels

    409 Ogden Pl, Perth Amboy, NJ 08861

    $535,000
    0.04 AC lot

    Each residence includes three bedrooms, one bath, an eat-in kitchen, living room, and in-unit laundry.

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    Two-Family Residential Income Property
    Two-Family Residential Income Property

    309 Washington St, Perth Amboy, NJ 08861

    $639,000

    Duplex with separate gas, electric, and water meters and two unit layouts totaling five bedrooms.

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    Renovated Two-Family Duplex
    Renovated Two-Family Duplex

    27 Alexander Street, East Brunswick, NJ 08901

    $549,000

    Two-unit property with separate gas and electric utilities, basement storage, and a front porch.

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    Two-Family Residence on Campus
    Two-Family Residence on Campus

    22 Richardson St, New Brunswick, NJ 08901

    Contact for pricing
    3,334 sqft

    Two-family residence with three- and five-bedroom apartments, situated on a university campus with annual leased income.

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    Two-Family Duplex with Finished Basement
    Two-Family Duplex with Finished Basement

    800 Central Pl, Perth Amboy, NJ 08861

    $549,000

    Separate living arrangements include dedicated laundry and additional lower-level recreational space.

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    Renovated Two-Family Home
    Renovated Two-Family Home

    48 5 TH STREET, Fords, NJ 08863

    $689,900

    Vacant, move-in-ready two-family residence with updated kitchens, dedicated laundry, basement storage, and a private backyard.

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    Side-by-Side Duplex with Garages
    Side-by-Side Duplex with Garages

    227-229 Bordentown Avenue, South Amboy, NJ 08879

    $899,000
    0.15 AC lot

    Two three-bedroom units are complemented by an open porch, basement laundry hookups, and substantial accessory storage.

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    Two-Unit Duplex with Basement
    Two-Unit Duplex with Basement

    69 S Harrison Avenue, Iselin, NJ 08830

    $731,500

    New windows, unfinished lower-level space, and a fenced backyard add practical flexibility.

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    Renovated Duplex with Separate Utilities
    Renovated Duplex with Separate Utilities

    170 Seaman St, New Brunswick, NJ 08901

    $685,000

    Two apartments provide a verified two-bedroom and three-bedroom configuration with finished lower-level and attic areas.

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    Duplex with Finished Basement
    Duplex with Finished Basement

    416 Catherine St, South Amboy, NJ 08879

    $990,000

    Legal two-family property with separate utilities, private entrances, modern interiors, and two on-site parking spaces.

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    New Construction Duplex with Garage
    New Construction Duplex with Garage

    113 Judy Dr, Keasbey, NJ 08832

    $979,000

    Under-construction two-family dwelling with customizable finishes and multiple full bathrooms.

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