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    Nassau County, NY Duplexes for Sale

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    Brooklyn, NY New York, NY Bronx, NY
    88 results
    Bayville Waterfront Two-Family Home
    $1,798,000
    3,550 SF

    Bayville Waterfront Two-Family Home

    20 Greenwich Avenue, Bayville, NY 11709

    Waterfront two-family home with private beach and modern amenities.

    • 80ft of private deeded beach frontage providing unrivaled shoreline privacy.
    • Waterfront two‑family home with 5 bedrooms and 3.5 bathrooms, suitable for income generation or extended family.
    • Approximately 3,550 sq. ft. of interior living space on a quarter‑acre beachfront property.
    • Parking for 6 cars, including covered parking for at least 4.
    • Superior infrastructure including waterproofed boiler room, dual central air and hot water units, and comprehensive security system.
    Updated: May 12
    View details
    Spacious Two-Family Home in Lynbrook
    $948,000
    2,237 SF

    Spacious Two-Family Home in Lynbrook

    62 Leaman Place, Lynbrook, NY 11563

    Well-maintained two-family home on an oversized lot in Lynbrook.

    • Two‑family Colonial home built in 1925 with approximately 2,237 SF of interior living space
    • 10,580 SF lot with outdoor access and adjacency to Greis Park’s walking path
    • First‑floor unit: living room, full kitchen, sunroom, 2 bedrooms, and a full bathroom
    • Second‑floor apartment: 2 bedrooms, full kitchen, full bathroom, plus access to an expansive third‑floor bedroom
    • Finished basement with large recreation area, laundry room, storage space, and utility area
    Updated: May 14
    View details
    Income-Producing Multifamily Property in Long Beach
    $1,250,000
    3,397 SF

    Income-Producing Multifamily Property in Long Beach

    Renovated residential property with income potential near Long Beach.

    121 W Chester Street, Long Beach, NY 11561
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    Renovated Two-Family Home, Assumable Mortgage
    $899,888
    1,796 SF

    Renovated Two-Family Home, Assumable Mortgage

    Updated two-family home in Malverne with assumable 2.8% mortgage.

    2 Birch Road, Malverne, NY 11565
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    Spacious Plainview Multi-Family Home
    $999,999
    3,389 SF

    Spacious Plainview Multi-Family Home

    Versatile 6-bedroom home with income potential in desirable Plainview.

    21 Audrey Avenue, Plainview, NY 11803
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    Great Neck Legal Two-Family Residence
    $998,000
    1,526 SF

    Great Neck Legal Two-Family Residence

    Two-family home in Great Neck with income potential.

    11 LEE Court, Great Neck, NY 11024
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    Uniondale Two-Family Investment Opportunity
    $750,000
    1,448 SF

    Uniondale Two-Family Investment Opportunity

    Well-maintained two-family property with stable rental income in Uniondale.

    1060 Midland Street, Uniondale, NY 11553
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    Freeport Two-Family Home with Garage
    $749,000
    550 SF

    Freeport Two-Family Home with Garage

    Updated two-family home with detached garage, ideal for investors.

    261 Rutland Road, Freeport, NY 11520
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    Two-Family Home with Off-Street Parking
    $1,049,000
    0.22 Acres

    Two-Family Home with Off-Street Parking

    Two two-bedroom units offer eat-in kitchens with stainless appliances, a full basement with washer/dryer, and off-street parking.

    12 Chester Street, Locust Valley, NY 11560
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    Spacious Multi-Family Home in Baldwin
    $1,325,000
    3,300 SF

    Spacious Multi-Family Home in Baldwin

    Large residence with modern luxury, refined living, and multi-generational comfort.

    296 Milburn Avenue, Baldwin Harbor, NY 11510
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    New Colonial Multifamily in Port
    $2,450,000
    5,000 SF

    New Colonial Multifamily in Port

    Two spacious units near Manhasset Isle Beach Association.

    1 Manhasset Avenue, Port Washington, NY 11050
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    Renovated Two-Family Home, Island Park
    $879,992
    0.25 Acres

    Renovated Two-Family Home, Island Park

    Fully renovated two-family home on an oversized corner lot.

    31 Julian Place, Island Park, NY 11558
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    Renovated Two-Family Home in Sea Cliff
    $1,199,000
    0.19 Acres

    Renovated Two-Family Home in Sea Cliff

    Meticulously maintained, income-producing two-family home near Sea Cliff Village.

    32 Franklin Avenue, Sea Cliff, NY 11579
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    Spacious Cedarhurst Multi-Family Home
    $1,699,000
    4,226 SF

    Spacious Cedarhurst Multi-Family Home

    Two-family home in Cedarhurst with ample space and parking.

    569 Peninsula Boulevard, Cedarhurst, NY 11516
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    Renovated Two-Family Home, New Hyde Park
    $999,000
    0.09 Acres

    Renovated Two-Family Home, New Hyde Park

    Move-in ready, renovated two-family home in the heart of New Hyde Park.

    25 N 12th Street, New Hyde Park, NY 11040
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    Two-Family Home in Glen Cove
    $799,000
    0.20 Acres

    Two-Family Home in Glen Cove

    Income-producing two-family home in Glen Cove, NY.

    1 Beverly Road, Glen Cove, NY 11542
    View details
    Charming Two-Family Home in Rockville Centre
    $850,000
    0.09 Acres

    Charming Two-Family Home in Rockville Centre

    Rare two-family home with classic charm and prime location.

    40 Rockville Avenue, Rockville Centre, NY 11570
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    Valley Stream Two-Family Home
    $975,000
    0.09 Acres

    Valley Stream Two-Family Home

    Well-maintained two-family home in Valley Stream School District 30.

    126 Roeckel Avenue, Valley Stream, NY 11580
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    Renovated Two-Family Home in Malverne
    $899,888
    1,796 SF

    Renovated Two-Family Home in Malverne

    Updated two-family home with assumable mortgage and income potential.

    00 UNKNOWN, Malverne, NY 11565
    View details
    Valley Stream Two-Family Home
    $1,198,000
    0.10 Acres

    Valley Stream Two-Family Home

    Two-family home in Valley Stream near LIRR and JFK.

    19 Gibson Boulevard, Valley Stream, NY 11581
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    Legal Two-Family Beach Side Property
    $1,260,000
    0.14 Acres

    Legal Two-Family Beach Side Property

    Two-family home near the beach with income potential.

    414 E Olive Street, Long Beach, NY 11561
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    Two Cottages on One Property
    $1,485,000
    0.14 Acres

    Two Cottages on One Property

    Two renovated cottages on one property, close to the water.

    23 West Drive, Port Washington, NY 11050
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    Legal Two-Family Home in Massapequa
    $879,888
    0.36 Acres

    Legal Two-Family Home in Massapequa

    Versatile two-family residence with potential for multi-generational living or income.

    137 Melrose Avenue, Massapequa, NY 11758
    View details
    Westbury Multi-Family Investment Opportunity
    $879,999

    Westbury Multi-Family Investment Opportunity

    Two-family home with expansion potential and bonus land.

    241 Covert Street, Westbury, NY 11590
    View details

    Nassau County, NY Duplexes Investment Opportunities Market Analysis

    Explore 88 duplexes for sale in Nassau County, NY, showcased through 88 active listings on our real estate platform. These investment opportunities span a total of 40,451 square feet of properties for sale, with an estimated market value of $17,810,774.

    Sale prices for duplexes in Nassau County, NY start at $645,000, averaging $1,187,384, and reaching up to $2,450,000 — 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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