Advertise
    Florida
    Duplex

    Monroe County, FL Duplexes for Sale

    Notify Me
    List
    Map
    Miami, FL Cape Coral, FL Tampa, FL Orlando, FL Jacksonville, FL Fort Myers, FL Fort Lauderdale, FL Port Charlotte, FL
    43 properties
    Sort:
    Multi-Family Waterfront Compound
    Updated: Apr 24
    Multi-Family Waterfront Compound

    34 Atlantic Drive, Key Largo, FL 33037

    $2,890,000
    3,112 sqft 0.98 AC lot
    Direct oceanfront compound with a 276‑ft concrete dock for boating, fishing, and launching watercraft
    Two separate homes on three lots: 3BR/2BA primary residence plus a 2BR/2BA second home on a separate meter
    Multiple outdoor entertaining features including an outdoor kitchen, built‑in grill, patio, and porch
    Interior features include granite countertops and walk‑in closets; tile flooring throughout
    Central heating and central A/C; metal roof; CBS/concrete construction
    View details
    Turnkey Waterfront Duplex Townhomes
    Updated: Jun 24
    Turnkey Waterfront Duplex Townhomes

    139 Marina Avenue, Key Largo, FL 33037

    $2,750,000
    2,485 sqft 0.21 AC lot
    Legally permitted duplex with two side‑by‑side townhomes: each has 2 bedrooms and 2.5 bathrooms (total 4 bedrooms, 4 full baths, 2 half baths).
    75 feet of waterfront on a wide 80‑foot deep‑water canal with ocean views and a concrete dock plus a 20,000‑lb Neptune boat lift.
    Brand‑new heated saltwater pool with fenced/privacy wall, lighting, and a hot tub.
    All‑concrete construction (CBS) with concrete roof; central heating and central air.
    All impact windows and doors, electric gated entrance on both sides, and separate electric and water meters for each unit.
    View details
    Canal-Front Duplex with Two Entrances
    Canal-Front Duplex with Two Entrances

    31032 Hollerich Drive, Big Pine Key, FL 33043

    $899,000
    1,460 sqft 0.12 AC lot

    Waterfront duplex with two 2BR/1BA units, private entrances, updated kitchens, renovated baths, and canal-front outdoor space.

    View details
    Turn Any Listing Into an Investment Snapshot Owner equity, real caprate, demand score for every listing. Go To Analytics Center
    Waterfront Duplex with Redevelopment Potential
    Waterfront Duplex with Redevelopment Potential

    230 Apache Street, Plantation Key, FL 33070

    $1,250,000
    1,500 sqft 0.24 AC lot

    Canal-front duplex in Plantation Key with income and redevelopment options.

    View details
    Renovated Duplex with Private Yard
    Renovated Duplex with Private Yard

    1126 Grinnell Street, Key West, FL 33040

    $1,325,000
    875 sqft 0.03 AC lot

    Two renovated 1-bedroom units with independent living and private yard space.

    View details
    Legal Duplex on Spacious Lot
    Legal Duplex on Spacious Lot

    1409 4Th Street, Key West, FL 33040

    $1,250,000
    2,664 sqft 0.23 AC lot

    Legal duplex with rental income potential on a 10,000 SqFt lot.

    View details
    Ocean-View Mixed-Use Property
    Ocean-View Mixed-Use Property

    Islamorada, FL 33036

    $1,680,000
    1,980 sqft 0.16 AC lot

    High-visibility mixed-use setup with ocean views and substantial parking along the Overseas Highway.

    View details
    Key West Duplex with Pool
    Key West Duplex with Pool

    1516 17th Terrace, Key West, FL 33040

    $1,875,000
    2,423 sqft 0.30 AC lot

    Spacious duplex with pool, ideal for various living arrangements.

    View details
    Legal Duplex with Updated Interiors
    Legal Duplex with Updated Interiors

    102 Harry Harris Drive, Key Largo, FL 33070

    $779,000
    1,496 sqft 0.11 AC lot

    Concrete duplex includes two electric and water meters, updated units, and a storage building with shared washer and dryer access.

    View details
    Waterfront Duplex with Dockage
    Waterfront Duplex with Dockage

    303 Sombrero Beach Road, Marathon, FL 33050

    $1,549,000
    2,114 sqft 0.25 AC lot

    Stilted waterfront duplex with a pool, 110 feet of concrete seawall, and dockage for deep-water boating access.

    View details
    Key West Duplex Redevelopment Opportunity
    Key West Duplex Redevelopment Opportunity

    3711 Eagle Avenue, Key West, FL 33040

    $825,000
    1,464 sqft 0.14 AC lot

    Legal duplex in prime location with redevelopment potential and owner financing.

    View details
    Waterfront Duplex with Dockage
    Waterfront Duplex with Dockage

    596 W Shore Drive, Summerland Key, FL 33042

    $998,000
    2,572 sqft 0.13 AC lot

    Two-story waterfront duplex on a boating canal with 60 feet of dockage and separate tiki huts for each unit.

    View details
    HCT-Zoned Multifamily Development Site
    HCT-Zoned Multifamily Development Site

    1430 Vernon Avenue, Key West, FL 33040

    $9,888,000
    2,071 sqft 0.20 AC lot

    Two-story Key West property in the HCT Historic Commercial Tourist District with two separate electric meters.

    View details
    Charming Key West Duplex
    Charming Key West Duplex

    606 Grinnell Street, Key West, FL 33040

    $1,750,000
    1,870 sqft 0.06 AC lot

    Versatile Old Town duplex with pool, ideal for investment.

    View details
    Key West Legal Duplex
    Key West Legal Duplex

    1911 Seidenberg Avenue, Key West, FL 33040

    $1,250,000
    1,119 sqft 0.12 AC lot

    Well-maintained two-story duplex in Key West's Midtown East.

    View details
    Key West Corner Duplex Lot
    Key West Corner Duplex Lot

    2330 Staples Avenue, Key West, FL 33040

    $999,000
    693 sqft 0.15 AC lot

    Spacious duplex lot with redevelopment potential in Key West.

    View details
    Historic Key West Duplex Opportunity
    Historic Key West Duplex Opportunity

    1306 Virginia Street, Key West, FL 33040

    $1,369,000
    1,428 sqft 0.08 AC lot

    Legal duplex in Old Town Key West with investment potential.

    View details
    Two-Story Duplex with Redevelopment Potential
    Two-Story Duplex with Redevelopment Potential

    329 63 Court Gulf, Marathon, FL 33050

    $500,000
    1,302 sqft 0.24 AC lot

    Two-story duplex on a sizable lot, offering two 1-bedroom units and flexibility for redevelopment subject to approvals.

    View details
    Key West Legal Duplex
    Key West Legal Duplex

    1505 Rose Street, Key West, FL 33040

    $1,785,000
    1,932 sqft 0.12 AC lot

    Legal duplex in a quiet neighborhood, close to the beach.

    View details
    Waterfront Renovated Duplex
    Waterfront Renovated Duplex

    Key Colony Beach, FL 33051

    $1,849,000
    2,540 sqft 0.15 AC lot

    Renovated duplex with separate upper and lower units, full kitchens, and waterfront dock access with a 15,000-lb boat lift.

    View details
    Key West Residential Duplex
    Key West Residential Duplex

    1612 Laird Street, Key West, FL 33040

    $1,354,000
    1,904 sqft 0.14 AC lot

    Residential duplex with long-term rentals in place.

    View details
    Key West Duplex with Income
    Key West Duplex with Income

    2004 Patterson Avenue, Key West, FL 33040

    $925,000
    1,239 sqft 0.12 AC lot

    Well-maintained duplex in Key West with income potential.

    View details
    Waterfront Multi-Family Estate
    Waterfront Multi-Family Estate

    901 46th Street, Marathon, FL 33050

    $2,799,000
    3,047 sqft 0.43 AC lot

    Two Gulf-front homes include a private dock, pools, and separate living spaces on an open-water lot.

    View details
    Half Duplex with Dockage
    Half Duplex with Dockage

    Key Colony Beach, FL 33051

    $789,000
    900 sqft 0.07 AC lot

    Remodeled half duplex includes impact-rated entry doors, double-pane impact windows, and 30 feet of dockage.

    View details

    Monroe County, FL Duplexes Market Trends and Statistics

    Explore 43 duplexes for sale in Monroe County, FL, showcased through 43 active listings on our real estate platform. These investment opportunities span a total of 83,281 square feet of properties for sale, with an estimated market value of $71,608,498.

    Sale prices for duplexes in Monroe County, FL start at $500,000, averaging $1,704,964, and reaching up to $9,888,000 — 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 Monroe, FL

    Popular Categories

    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!