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    Key West, FL Duplexes for Sale

    8 results
    Notify Me
    New
    Key West Multi-Family Property
    $979,000
    1,634 SF

    Key West Multi-Family Property

    1925 Fogarty Ave, Key West, FL 33040

    Income-producing Key West property with renovated detached unit.

    • Versatile property with two separate structures on one lot in Key West.
    • Detached, fully renovated (2024) second unit with new plumbing, flooring, and impact‑resistant windows, suitable for guests, in‑laws, office, or rental income.
    • Convenient mid‑island location close to shopping, schools, beaches, and the hospital, with easy access to Old Town.
    • Open and easy‑flow layout in the main house with ample natural light.
    • Large, covered patio accessible from the dining area.
    Last Update: Dec 4
    View details
    New
    Key West Duplex on Large Lot
    $1,199,000
    2,664 SF

    Key West Duplex on Large Lot

    1409 4Th St, Key West, FL 33040

    Legal duplex on a spacious corner lot in Key West.

    • Legal duplex on a large 10,000 SqFt corner lot.
    • Main residence featuring 2 bedrooms, 2 bathrooms, and 2,004 SqFt.
    • Separate 2‑bedroom, 1‑bath cottage (660 SqFt) ideal for rental income or as a guest house.
    • Solid CBS construction of the main residence.
    • Expansive yard with space for outdoor entertaining.
    Last Update: Dec 4
    View details
    Key West Multi-Family Opportunity
    $1,299,000
    1,932 SF

    Key West Multi-Family Opportunity

    Convertible Key West home approved for up to 4 units.
    1409 Truman Ave, Key West, FL 33040
    View details
    Key West Income-Producing Duplex
    $950,000
    1,552 SF

    Key West Income-Producing Duplex

    Income-producing duplex with renovated primary home in New Town.
    3707 Paula Ave, Key West, FL 33040
    View details
    Key West Legal Duplex
    $1,150,000

    Key West Legal Duplex

    Recently renovated duplex in Old Town Key West with income potential.
    1018 Georgia St, Key West, FL 33040
    View details
    Key West Duplex with Pool
    $999,999
    1,421 SF

    Key West Duplex with Pool

    Legal duplex in Key West with in-ground pool.
    620 White St, Key West, FL 33040
    View details
    Key West Income-Producing Duplex
    $1,068,000
    1,694 SF

    Key West Income-Producing Duplex

    Duplex near the coast with a solid rent roll.
    1916 Seidenberg Ave, Key West, FL 33040
    View details
    Key West Multi-Family Homes
    $6,500,000
    3,010 SF

    Key West Multi-Family Homes

    Two homes with private pools, near Duval Street, Key West.
    421 Simonton St, Key West, FL 33040
    View details
    Based on your search, we've compiled 12 Potential Opportunities for your consideration. Besides 8 Active listings in Key West, FL, we suggest exploring several alternatives: 4 properties in Nearby Cities

    Explore Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    New
    Waterfront Duplex in Big Pine
    $987,500
    1,536 SF

    Waterfront Duplex in Big Pine

    Waterfront CBS duplex with boating access and investment potential.
    3962 No Name Rd, Big Pine Key, FL 33043
    View details
    Income Producing Duplex, Big Pine
    $839,000
    1,924 SF

    Income Producing Duplex, Big Pine

    Big Pine Key CBS duplex with boating access and seawall.
    1433 Sunset Rd, Big Pine Key, FL 33043
    View details
    Waterfront Duplex with Rental Potential
    $1,750,000
    2,244 SF

    Waterfront Duplex with Rental Potential

    Waterfront duplex in Marathon, Florida, with rental license.
    440 48 St, Marathon, FL 33050
    View details
    Waterfront Duplex with Dock
    $1,750,000

    Waterfront Duplex with Dock

    Duplex with dock, pool, and short-term rental potential.
    440-442 48Th Street Ocean, Marathon, FL 33050
    View details

    Key West, FL Duplexes Investment Opportunities Market Analysis

    Explore 8 duplexes for sale in Key West, FL, showcased through 8 active listings on our real estate platform. These investment opportunities span a total of 40,946 square feet of properties for sale, with an estimated market value of $14,268,999.

    Prices for duplexes in Key West, FL start at $950,000, averaging $1,783,624, and reaching up to $6,500,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you have the most current data.

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