Advertise
    New York
    Duplex
    AI Picks

    Nassau County, NY Duplexes for Sale

    Notify Me
    List
    Map
    Brooklyn, NY New York, NY Bronx, NY Staten Island, NY Buffalo, NY Queens, NY Rochester, NY Albany, NY
    157 properties
    Sort:
    Duplex Property with Finished Basement
    Updated: Aug 14
    Duplex Property with Finished Basement

    1537 Madison Street, Elmont, NY 11003

    $879,000
    1,270 sqft 0.10 AC lot
    1,270 SF wood‑frame duplex property built in 1954
    0.1047‑acre lot with private driveway and detached garage
    Three bedrooms and three bathrooms
    Finished basement with laundry, recreation, and bonus space
    Rear deck, pool, and front patio
    View details
    Duplex with Finished Lower Level
    Updated: Aug 24
    Duplex with Finished Lower Level

    1024 First Avenue, Franklin Square, NY 11010

    $1,199,999
    0.22 AC lot
    Over 3,000 Sq/Ft of living space
    9,590 Sq Ft lot measuring 0.2202 acres
    Two‑family layout with 3 bedrooms and 1 full bath on each of the first and second floors
    Finished lower level with private outside entrance and multiple bonus rooms
    Two gas heating systems, 2 laundry sets, and 3 electric panels
    View details
    Legal Two-Family Duplex with Garage
    Legal Two-Family Duplex with Garage

    81 Franklin Street, Elmont, NY 11003

    $989,888
    0.11 AC lot

    Cape Cod duplex with separate living spaces, a finished basement, private parking, and public utilities.

    View details
    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Mixed-Use Property with Warehouse
    Mixed-Use Property with Warehouse

    6-8 Chadwick Street, Glen Cove, NY 11542

    $4,500,000
    8,884 sqft 0.69 AC lot

    Five structures combine commercial space, residential units, secured yard area, and separate utility metering.

    View details
    Vacant Duplex Property
    Vacant Duplex Property

    471 Eureka Avenue, Elmont, NY 11003

    $858,000
    0.12 AC lot

    Two separate residences offer flexible occupancy options with driveway parking and public utilities.

    View details
    Vacant Two-Unit Duplex
    Vacant Two-Unit Duplex

    7 Roberts Lane, Cedarhurst, NY 11516

    $1,500,000
    0.16 AC lot

    Brick multifamily property with separate upper- and lower-level residences, delivered vacant for immediate occupancy or renovation.

    View details
    2-Unit Duplex with Garage
    2-Unit Duplex with Garage

    141 Elmwood Street, Valley Stream, NY 11581

    $749,990
    0.12 AC lot

    Two-family layout with separate bedroom configurations, basement space, and a detached garage.

    View details
    Mixed-Use Property with Renovated Offices
    Mixed-Use Property with Renovated Offices

    1168-1170 Port Washington Boulevard Unit: 1168-1170, Port Washington, NY 11050

    $1,700,000
    6,912 sqft

    The property combines retail frontage, office accommodations, and a separate two-family residence on one lot.

    View details
    Duplex with Finished Basement
    Duplex with Finished Basement

    254 Hempstead Avenue, Rockville Centre, NY 11570

    $1,200,000
    0.34 AC lot

    Two-family property with separate entrances, multiple finished living levels, and a private driveway in Rockville Centre.

    View details
    Brick Duplex with Finished Basement
    Brick Duplex with Finished Basement

    111 N 11th Street, New Hyde Park, NY 11040

    $1,689,000
    0.14 AC lot

    Two-unit residence with flexible living areas, outdoor entertaining space, and a separate apartment layout.

    View details
    Two-Unit Duplex with Garage
    Two-Unit Duplex with Garage

    141 Elmwood ST, Valley Stream, NY 11581

    $749,990
    1 sqft

    Separate apartments include a two-bedroom unit above a one-bedroom unit.

    View details
    Two-Story Duplex with Garage
    Two-Story Duplex with Garage

    191 N Virginia Avenue, Massapequa, NY 11758

    $750,000
    0.19 AC lot

    Two residential levels offer distinct bedroom, dining, and kitchen arrangements with a fenced backyard and covered rear patio.

    View details
    Two-Unit Colonial Duplex
    Two-Unit Colonial Duplex

    280 Van Cott Avenue, Farmingdale, NY 11735

    $850,000
    0.20 AC lot

    Legal two-family property with a full basement, fenced backyard, and public water and sewer.

    View details
    Duplex with Full Basement
    Duplex with Full Basement

    33 Juniper Road, Port Washington, NY 11050

    $1,129,000
    2,170 sqft 0.11 AC lot

    Two separate residences include private kitchens, living areas, and full bathrooms.

    View details
    Two-Family Home With Detached Garage
    Two-Family Home With Detached Garage

    139 N 11th Street, New Hyde Park, NY 11040

    $849,000
    0.09 AC lot

    Legal residential income property with separate living areas, a private yard, and a flexible two-level layout.

    View details
    Legal Two-Family Duplex
    Legal Two-Family Duplex

    485 Peninsula Boulevard, Lynbrook, NY 11563

    $895,000
    0.11 AC lot

    Separate entrances, a detached garage, and flexible lower-level space support owner-occupant or rental use.

    View details
    Two-Unit Duplex Property
    Two-Unit Duplex Property

    27 & 31 Kennedy Road, East Hills, NY 11577

    $1,200,000
    1,672 sqft

    Tenant-occupied duplex with month-to-month leases, private yards, and flexible unit configurations.

    View details
    Duplex with Finished Basement
    Duplex with Finished Basement

    325 W Valley Stream Boulevard, Valley Stream, NY 11580

    $869,000
    0.14 AC lot

    Legal two-family home with separate apartments, a finished basement, and convenient access to the Long Island Rail Road.

    View details
    Legal Two-Family Duplex
    Legal Two-Family Duplex

    20 Spruce Street, Great Neck, NY 11021

    $1,990,000
    3,130 sqft 0.22 AC lot

    Two well-configured units offer private entrances, full kitchens, dining rooms, and flexible living space.

    View details
    Two-Unit Duplex with Garage
    Two-Unit Duplex with Garage

    25 Webb Avenue, Hempstead, NY 11550

    $699,999
    0.09 AC lot

    Two residential units include a full basement, detached garage, and private driveway.

    View details
    Duplex with 6 Bedrooms and New Roof
    Duplex with 6 Bedrooms and New Roof

    14 Vanata Court, Hempstead, NY 11550

    $699,000
    2,211 sqft 0.12 AC lot

    Duplex home near Hempstead amenities, featuring a versatile layout and a new roof installed in 2025.

    View details
    Legal Two-Family Duplex
    Legal Two-Family Duplex

    20 E Pine Street, Long Beach, NY 11561

    $919,999
    0.11 AC lot

    Occupied units, a two-car garage, basement bonus space, and a rear deck support the property’s residential income use.

    View details
    Mixed-Use Income Property
    Mixed-Use Income Property

    5651-5661 MERRICK RD, Massapequa, NY 11758

    $1,499,000
    6,000 sqft

    Four-unit property includes an auto repair shop, outdoor storage lot, two residential units, and office/retail space.

    View details
    Renovated Two-Family Duplex
    Renovated Two-Family Duplex

    25 N 12th Street, New Hyde Park, NY 11040

    $968,000
    0.09 AC lot

    Updated residential income property with garage parking, private outdoor space, and flexible owner-occupancy or rental use.

    View details

    Nassau County, NY Duplexes Market Trends and Statistics

    Explore 157 duplexes for sale in Nassau County, NY, showcased through 157 active listings on our real estate platform. These investment opportunities span a total of 50,552 square feet of properties for sale, with an estimated market value of $157,681,587.

    Sale prices for duplexes in Nassau County, NY start at $500,000, averaging $1,080,010, and reaching up to $4,500,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

    List
    Map

    Duplexes by market

    Browse Duplexes for Sale Near Nassau, NY

    Popular Categories

    Featured Nassau County Real Estate Agencies

    Realmo connects you with licensed Nassau County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    Charles Rutenberg Realty, Inc.
    255 Executive Drive, Suite 104 Hicksville, NY 11803
    Phone: 15165757500
    www.crrli.com
    Coldwell Banker American Homes
    1856 Hempstead Turnpike Hempstead, NY 11554
    Phone: 18666640347
    www.cbamhomes.com
    Laffey Real Estate
    55 Northern Blvd., East Hills, NY 11548
    Phone: 18882896902
    www.laffey.com

    Select Neighborhood

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!