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    Suffolk County, NY Duplexes for Sale

    37 results
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    Hauppauge Legal Two-Family Duplex
    $799,999
    2,416 SF

    Hauppauge Legal Two-Family Duplex

    11 Marlo Ln, Hauppauge, NY 11788

    Legal two-family duplex in Hauppauge School District.

    • Rare legal two‑family duplex in the desirable Hauppauge School District, offering a unique investment opportunity.
    • Two separate units, each featuring a CHEF'S KITCHEN, HARDWOOD FLOORS, and PRIVATE OUTDOOR PATIO space.
    • Strong cash flow upside with below‑market rents currently in place, presenting a value‑add opportunity.
    • First‑floor unit includes access to a partially finished basement with a full bathroom and separate outside entrance.
    • Expanded oversized driveway provides ample off‑street parking.
    Updated: Jan 17
    View details
    Patchogue Legal Two-Family Residence
    Pending
    $550,000
    0.08 Acres

    Patchogue Legal Two-Family Residence

    13 Academy St, Patchogue, NY 11772

    Legal two-family property in Patchogue Village, New York.

    • Legal two‑family property
    • Located in Patchogue Village
    • Two‑bedroom, one‑bath apartment on the main floor
    • One‑bedroom, one‑bath apartment upstairs
    • First Floor Bedroom and Full Bath
    Updated: Jan 13
    View details
    East Quogue Multi-Family Residence
    $1,295,000
    0.15 Acres

    East Quogue Multi-Family Residence

    Refined Hamptons living near Shinnecock Bay.

    13 Willow Shade Ave, East Quogue, NY 11942
    View details
    Updated Two-Family Home
    Pending
    $699,000
    0.24 Acres

    Updated Two-Family Home

    Updated two-family home with detached garage and park-like grounds.

    109 W 21St St, Huntington Station, NY 11746
    View details
    Copiague Duplex: Investor's Delight
    Pending
    $769,000
    0.19 Acres

    Copiague Duplex: Investor's Delight

    Well-maintained duplex near transportation, ideal for investors.

    540 Oak St, Copiague, NY 11726
    View details
    Rebuilt Two-Family Home
    Pending
    $999,000
    0.17 Acres

    Rebuilt Two-Family Home

    Legal two-family home in West Babylon, completely rebuilt.

    437 Sunrise Hwy, West Babylon, NY 11704
    View details
    West Babylon Two-Family Home
    Pending
    $674,990
    0.23 Acres

    West Babylon Two-Family Home

    Legal two-family home with large yard in West Babylon.

    1558 9Th St, West Babylon, NY 11704
    View details
    Amityville Legal Two-Family Home
    Pending
    $949,000
    0.16 Acres

    Amityville Legal Two-Family Home

    Legal two-family home in Amityville with income potential.

    168 Oldfield Ave, Amityville, NY 11701
    View details
    Riverhead Two-Family Home For Sale
    $799,000
    0.12 Acres

    Riverhead Two-Family Home For Sale

    Two-family home in Riverhead with existing rental income.

    418 Lincoln St, Riverhead, NY 11901
    View details
    Legal Two-Family Investment Opportunity
    $699,999
    0.11 Acres

    Legal Two-Family Investment Opportunity

    Well-maintained two-family home with income potential in Huntington Station.

    2386 New York Ave, Huntington Station, NY 11746
    View details
    Sayville Legal Two-Family Residence
    Pending
    $699,990
    0.27 Acres

    Sayville Legal Two-Family Residence

    Two-family property in Sayville with long-term tenants.

    60 Lincoln Ave, Sayville, NY 11782
    View details
    Well-Maintained West Babylon Two-Family Home
    Pending
    $724,000
    0.14 Acres

    Well-Maintained West Babylon Two-Family Home

    Two-family residence in West Babylon with rental income potential.

    1316 12Th St, West Babylon, NY 11704
    View details
    Rocky Point Legal Two-Family Cape
    Pending
    $490,000
    0.21 Acres

    Rocky Point Legal Two-Family Cape

    Legal 2-family cape in Rocky Point, perfect for income.

    5 Oakland Ave, Rocky Point, NY 11778
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    East Northport Two-Family Home
    Pending
    $699,999
    0.17 Acres

    East Northport Two-Family Home

    Two-family home with spacious yard in East Northport.

    167 Vernon Valley Rd, East Northport, NY 11731
    View details
    Income-Producing Multi-Family Property
    $1,699,000
    2,919 SF

    Income-Producing Multi-Family Property

    Multi-family property with two residences, gardens, and potential income.

    153 Ponquogue Ave, Hampton Bays, NY 11946
    View details
    West Islip Two-Family Duplex
    Pending
    $599,000
    0.11 Acres

    West Islip Two-Family Duplex

    Income-producing duplex in West Islip, close to amenities.

    64-66 Hawley Ave, West Islip, NY 11795
    View details
    Updated Duplex in Islip, NY
    Pending
    $599,999
    1,542 SF

    Updated Duplex in Islip, NY

    Updated two-family home in Islip with income potential.

    25 1St St, Islip, NY 11751
    View details
    Well-Maintained Lindenhurst Two-Family Residence
    Pending
    $499,999
    1,470 SF

    Well-Maintained Lindenhurst Two-Family Residence

    Legal two-family home with income potential near schools and transportation.

    61 Kellum St, North Lindenhurst, NY 11757
    View details
    Turnkey Legal 2-Family Home
    Pending
    $599,000
    2,124 SF

    Turnkey Legal 2-Family Home

    Legal 2-family home in Wyandanch, generating strong, guaranteed income.

    62 N 16Th St, Wyandanch, NY 11798
    View details
    Bay Shore Legal Duplex
    Pending
    $599,000
    1,755 SF

    Bay Shore Legal Duplex

    Well-maintained legal 2-family residence in a desirable neighborhood.

    44 Chapman Pl, Bayshore, NY 11706
    View details
    Riverhead Duplex with Rental Income
    $679,988
    2,750 SF

    Riverhead Duplex with Rental Income

    Two-family home in Riverhead, currently generating rental income.

    418 Lincoln St, Riverhead, NY 11901
    View details
    Copiague Duplex with Detached Garage
    Pending
    $650,000
    1,216 SF

    Copiague Duplex with Detached Garage

    Legal duplex near shopping, dining, and train station in Copiague.

    225 Oak St, Copiague, NY 11726
    View details
    Wheatley Heights Legal Two-Family Home
    Pending
    $639,000
    2,044 SF

    Wheatley Heights Legal Two-Family Home

    Legal two-family home in Wheatley Heights, steps to LIRR.

    35 N 16Th St, Wheatley Heights, NY 11798
    View details
    Sayville Duplex with Income Potential
    $850,000
    3,487 SF

    Sayville Duplex with Income Potential

    Legal two-family home in the heart of Sayville, built in 1880.

    46 Lincoln Ave, Sayville, NY 11782
    View details

    Suffolk County, NY Duplexes Investment Opportunities Market Analysis

    Explore 37 duplexes for sale in Suffolk County, NY, showcased through 37 active listings on our real estate platform. These investment opportunities span a total of 203,739 square feet of properties for sale, with an estimated market value of $18,832,976.

    Prices for duplexes in Suffolk County, NY start at $490,000, averaging $818,825, and reaching up to $2,300,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you have the most current data.

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    Duplexes by market

    Browse Duplexes for Sale Near Suffolk, NY

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