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    Marathon, FL Residential Income Properties for Sale

    25 results
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    Charming Duplex in Little Venice
    $699,000
    907 SF

    Charming Duplex in Little Venice

    487 116 St, Marathon, FL 33050

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

    • Desirable Little Venice location in Marathon, close to shopping, dining, and marinas.
    • Versatile duplex with potential for owner occupancy and rental income.
    • Two separate units: a 1‑bedroom/1‑bath main unit and an efficiency unit with a full bath.
    • Large detached storage building with washer and dryer.
    • Corner lot location.
    Updated: Feb 11
    View details
    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 10
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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 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
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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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    Renovated Duplex on Deep Water
    $1,650,000
    1,854 SF

    Renovated Duplex on Deep Water

    Turnkey duplex in Marathon with ocean access and rental income.

    574-576 99 St, Marathon, FL 33050
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    Waterfront Redevelopment Opportunity in Marathon
    $3,549,000
    6,128 SF

    Waterfront Redevelopment Opportunity in Marathon

    Rare waterfront property with redevelopment potential and deep water dockage.

    14 125Th Street Gulf, Marathon, FL 33050
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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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    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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    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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    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
    View details
    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 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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    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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    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
    View details
    Waterfront Restaurant with Development Potential
    $3,300,000

    Waterfront Restaurant with Development Potential

    Iconic restaurant with residential property, development rights, and dockage.

    1240 Overseas Hwy, 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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    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
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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
    $1,495,000

    Marathon Keys Multifamily Investment

    Beachfront Duplex, Fully Renovated

    308 Sombrero Beach Rd, 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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    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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    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
    View details

    Marathon, FL Residential Income Properties Investment Opportunities Market Analysis

    Explore 31 residential income properties for sale in Marathon, FL, showcased through 25 active listings on our real estate platform. These investment opportunities span a total of 3,502,423,505 square feet of properties for sale, with an estimated market value of $17,752,000.

    Sale prices for residential income properties in Marathon, FL start at $700,000, averaging $1,613,818, 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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