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    Marathon, FL Multifamily Properties for Sale

    24 results
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    Waterfront Duplex Near Sombrero Beach
    $785,000
    834 SF

    Waterfront Duplex Near Sombrero Beach

    17 Man-O-War Dr, Marathon, FL 33050

    Updated half-duplex with new dock, ideal for rental income.

    • Waterfront property with new 45‑ft dock and new seawall.
    • Short walking distance to Sombrero Beach.
    • Priced below appraised value.
    • Newly updated with new vinyl plank flooring, tiled shower, updated kitchen, and newer appliances.
    • Freshly painted inside and out; move‑in ready.
    Updated: Feb 27
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    Waterfront Redevelopment Opportunity in Marathon
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity in Marathon

    14 125Th Street Gulf, Marathon, FL 33050

    Rare waterfront property with redevelopment potential and deep water dockage.

    • 100' of waterfront with approved deep water dockage.
    • Large 74,890 SQ FT site with active Conditional Use Permit for 10 units & 4 affordable staff group home units.
    • Mixed‑use zoning allows for various commercial‑residential possibilities (hotel, market rate units, etc.).
    • 200' of highway frontage.
    • Existing 6,128 SQ FT CBS building with 2,340 SQ FT of outdoor porches.
    Updated: Jan 10
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    Waterfront Redevelopment Opportunity in Marathon
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity in Marathon

    Rare waterfront redevelopment with deep water dockage and highway frontage.

    14 125Th Street Gulf, Marathon, FL 33050
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    Waterfront Duplex in Sombrero Beach
    $1,550,000
    1,668 SF

    Waterfront Duplex in Sombrero Beach

    Updated waterfront duplex with dock and ocean access in Marathon.

    17-18 Man-O-War Dr, Marathon, FL 33050
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    Charming Duplex in Little Venice
    $699,000
    907 SF

    Charming Duplex in Little Venice

    Versatile duplex in Marathon, Florida Keys, ideal for living/investment.

    487 116 St, Marathon, FL 33050
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    Waterfront Duplex Near Sombrero Beach
    $785,000
    834 SF

    Waterfront Duplex Near Sombrero Beach

    Updated half-duplex with new dock near Sombrero Beach.

    18 Man-O-War Dr, Marathon, FL 33050
    View details
    Two-Story Duplex in Marathon
    $700,000
    1,302 SF

    Two-Story Duplex in Marathon

    Two-story duplex in Marathon, ideal for redevelopment and expansion.

    329 63 Ct Gulf Ct, Marathon, FL 33050
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    Marathon Triplex Income Opportunity
    $785,000
    2,074 SF

    Marathon Triplex Income Opportunity

    Triplex in Marathon, fully occupied, great income property.

    908 66 St, Marathon, FL 33050
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    Ocean View Duplex in Marathon
    $1,500,000
    1,590 SF

    Ocean View Duplex in Marathon

    Remodeled duplex with ocean views and direct ocean access.

    945 98 St, Marathon, FL 33050
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    Waterfront Redevelopment Opportunity with Dockage
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity with Dockage

    Rare waterfront redevelopment opportunity with deep water dockage and highway frontage.

    14 125Th Street Gulf, Marathon, FL 33050
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    Waterfront Redevelopment Opportunity in Marathon, FL
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity in Marathon, FL

    Rare waterfront property with deep water dockage and redevelopment potential.

    14 125Th Street Gulf, Marathon, FL 33050
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    Renovated Duplex on Deep Water Canal
    $1,650,000
    1,854 SF

    Renovated Duplex on Deep Water Canal

    Turnkey duplex in Marathon with ocean access and rental income.

    574-576 99 St, Marathon, FL 33050
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    Waterfront Residences: Luxury & Income
    $11,000,000
    12,198 SF

    Waterfront Residences: Luxury & Income

    Three designer homes on a waterfront parcel with income potential.

    2394 Coco Plum Dr, Marathon, FL 33050
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    Waterfront Residences: Luxury & Income
    $11,000,000

    Waterfront Residences: Luxury & Income

    Three designer homes on an exclusive waterfront parcel with income potential.

    2394 Coco Plum Dr, Marathon, FL 33050
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    Waterfront Duplex in Marathon, Florida
    $1,099,000
    1,512 SF

    Waterfront Duplex in Marathon, Florida

    Duplex with canal access, ideal for rental income or residence.

    4901/4903 49 St, Marathon, FL 33050
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    Multifamily Complex in Marathon, Florida
    $1,800,000
    3,017 SF

    Multifamily Complex in Marathon, Florida

    Multifamily complex with redevelopment potential in a high-demand location.

    13755 Overseas Hwy, Marathon, FL 33050
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    Tranquility Bay Beach House Resort
    $520,000

    Tranquility Bay Beach House Resort

    Two-bedroom beach house with rental potential in lush resort area.

    2600 Overseas Hwy, Marathon, FL 33050
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    Marathon Home Near Sombrero Beach
    $1,125,000

    Marathon Home Near Sombrero Beach

    Home near Sombrero Beach with dock and vacation rental potential.

    308 Sombrero Beach Rd, Marathon, FL 33050
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    Grassy Key Marina Opportunity
    $9,900,000
    22,000 SF

    Grassy Key Marina Opportunity

    Marina with apartments, store, and redevelopment potential in Marathon, FL.

    59073 Overseas Hwy, Marathon, FL 33050
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    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
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    Oceanfront Keys Rental Home
    $629,000
    1,000 SF

    Oceanfront Keys Rental Home

    Luxury 2-bed, 1.5-bath vacation rental.

    101 11Th Street Ocean, Marathon, FL 33050
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    Marathon Keys Multifamily Investment
    Contact for pricing
    1,000 SF

    Marathon Keys Multifamily Investment

    10 Units, High ROI, Oceanfront

    101 11Th Street Ocean, Marathon, FL 33050
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    Marathon Keys Multifamily Investment
    $1,495,000

    Marathon Keys Multifamily Investment

    Beachfront Duplex, Fully Renovated

    308 Sombrero Beach Rd, Marathon, FL 33050
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    Luxury Waterfront Multifamily in Marathon
    $1,447,000

    Luxury Waterfront Multifamily in Marathon

    Profitable Keys Investment, Ocean Views

    104 52Nd Street Ocean, Marathon, FL 33050
    View details
    Based on your search, we've compiled Potential Opportunities for your consideration. Besides 24 Active Listings in Marathon, FL, we suggest to view alternatives - similar 6 Off-Market properties to explore as potential leads.

    Marathon, FL Multifamily Properties Investment Opportunities Market Analysis

    Explore 30 multifamily properties for sale in Marathon, FL, showcased through 24 active listings on our real estate platform. These investment opportunities span a total of 3,502,573,351 square feet of properties for sale, with an estimated market value of $24,850,000.

    Sale prices for multifamily properties in Marathon, FL start at $700,000, averaging $1,911,538, and reaching up to $3,549,000 — 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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