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    Marathon, FL Multifamily Properties for Sale

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    Key Colony Beach, FL Duck Key, FL Conch Key, FL
    16 results
    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 in Marathon, Florida.

    • 100' of waterfront with deep water dockage approved.
    • Large 74,890 SQ FT site with active Conditional Use Permit for development.
    • Mixed‑use zoning allows for various commercial and residential possibilities (hotel, apartments, etc.).
    • 200' of highway frontage.
    • Existing 6,128 SQ FT CBS building with 2,340 SQ FT of porches.
    Updated: Mar 9
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    Marathon Duplex with Redevelopment Potential
    $650,000
    1,040 SF

    Marathon Duplex with Redevelopment Potential

    746 50th Street Gulf, Marathon, FL 33050

    Duplex in Marathon, Florida Keys, with redevelopment potential.

    • Rare redevelopment opportunity in the heart of Marathon.
    • Includes permitted plans for a new 4‑bedroom, 3.5‑bathroom residence (2400 sqft), streamlining redevelopment.
    • Features an extra Transferable Building Right (TBR), offering valuable construction flexibility.
    • Prime location in a sought‑after area of Marathon, Florida Keys.
    • Offers immediate rental income potential with two existing 1‑bedroom, 1‑bath units.
    Updated: May 4
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    Marathon Duplex Redevelopment Opportunity
    $650,000
    1,460 SF

    Marathon Duplex Redevelopment Opportunity

    Duplex in Marathon, Florida Keys, with redevelopment potential.

    746 50th St Gulf, Marathon, FL 33050
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    Two-Story Duplex in Marathon
    $675,000
    1,302 SF

    Two-Story Duplex in Marathon

    Two-story duplex on a large lot in Marathon, Florida.

    329 63 Court 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 redevelopment potential and deep water dockage.

    14 125Th Street Gulf, Marathon, FL 33050
    View details
    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
    View details
    Waterfront Duplex in Sombrero Beach
    $1,300,000
    1,668 SF

    Waterfront Duplex in Sombrero Beach

    Updated waterfront duplex with dock and ocean access in Marathon.

    17-18 Man-O-War Drive, 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 Drive, Marathon, FL 33050
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    Waterfront Duplex Near Sombrero Beach
    $690,000
    834 SF

    Waterfront Duplex Near Sombrero Beach

    Updated waterfront duplex, move-in ready, near Sombrero Beach.

    18 Man-O-War Drive, Marathon, FL 33050
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    Waterfront Duplex with Building Rights
    $1,099,000
    1,512 SF

    Waterfront Duplex with Building Rights

    Rare duplex on canal with open water access in Marathon.

    4901/4903 49th Street, Marathon, FL 33050
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    Waterfront Residences - Investment Opportunity
    $11,000,000
    4,066 SF

    Waterfront Residences - Investment Opportunity

    Three designer residences near Coco Plum Beach with income potential.

    2394 Coco Plum Drive, Marathon, FL 33050
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    Waterfront Townhouse in Marathon, FL
    $525,000
    7.00 Acres

    Waterfront Townhouse in Marathon, FL

    One-bedroom, two-bath townhouse on a 7-acre waterfront complex.

    10877 Overseas Highway, 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 site with deep water dockage and highway frontage.

    14 125th Street Gulf, Marathon, FL 33050
    View details
    Overseas Highway Mixed-Use Investment
    $1,450,000
    4,168 SF

    Overseas Highway Mixed-Use Investment

    Mixed-use property with commercial space and residential rental units.

    7070 Overseas Highway, Marathon, FL 33050
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    Grassy Key Marina Investment
    $9,900,000
    22,000 SF

    Grassy Key Marina Investment

    Marina with rental income, apartments, and potential for growth.

    59073 Overseas Hwy, Marathon, FL 33050
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    Oceanfront Home on Atlantic
    Contact for pricing
    1,000 SF

    Oceanfront Home on Atlantic

    Oceanfront property with sunrise/sunset views, modern amenities, and rental potential.

    101 11th Street Ocean, Marathon, FL 33050
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    Based on your search, we've compiled 30 Potential Opportunities for your consideration. Besides 16 Active listings in Marathon, FL, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 6 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    Opportunities in Nearby Cities

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

    Waterfront Duplex with Rental Potential
    $1,849,000
    2,540 SF

    Waterfront Duplex with Rental Potential

    Renovated waterfront duplex in Key Colony Beach with rental income.

    Key Colony Beach, FL 33051
    View details
    Canal-Front Duplex with Rental History
    $2,995,000
    4,478 SF

    Canal-Front Duplex with Rental History

    7-bedroom, 7-bath duplex with income potential in Key Colony.

    Key Colony Beach, FL 33051
    View details
    Income Producing Duplex in Big Pine
    $699,000
    1,924 SF

    Income Producing Duplex in Big Pine

    Income-generating duplex with boating access in Big Pine Key.

    1433 Sunset Road, Big Pine Key, FL 33043
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    Income-Producing Duplex in Big Pine
    $699,000
    1,924 SF

    Income-Producing Duplex in Big Pine

    CBS duplex with direct boating access and large lot.

    1433 Sunset Road, Big Pine Key, FL 33043
    View details

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Gulf Front Estate in Marathon
    $9,950,000
    10,852 SF

    Gulf Front Estate in Marathon

    3.86-acre mixed-use commercial property with highway and water frontage.

    6500-6600 Overseas Highway, Marathon, FL 33050
    View details
    Buildable RV Lot with Views
    $237,500
    0.02 Acres

    Buildable RV Lot with Views

    Buildable RV lot with ocean views and resort amenities.

    6099 Overseas Highway, Marathon, FL 33050
    View details
    Land For Sale
    $299,000

    Land For Sale

    Land available north of US-1, Little Torch, Florida.

    Summerland Key, FL 33042
    View details
    Land in Little Torch Key
    $325,000
    0.10 Acres

    Land in Little Torch Key

    Residential land available in Little Torch Key, Florida.

    27935 Tarpon Terrace, Little Torch Key, FL 33042
    View details

    Off-Market Properties in Marathon, FL

    Consider similar Off-Market properties in Marathon, FL. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    101 11Th Street Ocean
    Multifamily properties
    1,000 SF
    Value Estimation by Request

    101 11Th Street Ocean, Marathon, FL 33050

    View details
    101 11Th Street Ocean
    Multifamily properties
    1,000 SF
    Value Estimation by Request

    101 11Th Street Ocean, Marathon, FL 33050

    View details
    442 48Th Street Ocean
    Multifamily properties
    Value Estimation by Request

    442 48Th Street Ocean, Marathon, FL 33050

    View details
    104 52Nd Street Ocean
    Multifamily properties
    Value Estimation by Request

    104 52Nd Street Ocean, Marathon, FL 33050

    View details
    308 Sombrero Beach Rd
    Multifamily properties
    Value Estimation by Request

    308 Sombrero Beach Rd, Marathon, FL 33050

    View details
    520 12Th Street Gulf
    Residential income properties
    Value Estimation by Request

    520 12Th Street Gulf, Marathon, FL 33050

    View details

    Marathon, FL Multifamily Properties Investment Opportunities Market Analysis

    Explore 22 multifamily properties for sale in Marathon, FL, showcased through 16 active listings on our real estate platform. These investment opportunities span a total of 68,632 square feet of properties for sale, with an estimated market value of $49,061,000.

    Sale prices for multifamily properties in Marathon, FL start at $650,000, averaging $3,773,923, and reaching up to $11,000,000 — 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

    Top Commercial Asset Segments

    Duplexes 7
    Short term rental properties 7
    Apartment buildings 2
    Triplexes 1

    Demographics Overview

    Population 11K
    Population Growth (5Y) +12.2%
    Median Household Income $83,776
    College Educated 36.9%

    High-Yield Neighborhoods for Investment

    Identify Marathon submarkets with the highest inventory density on the market and evaluate the median listing prices of real estate assets

    Neighborhood Average Price
    33050 $3.5M

    Taxes & Financing

    Tax Rate (average for all types) 0.86%
    Property Tax per SF $8.45 per sq ft
    Tax Rate vs County Average 0.11 pp above county avg
    Average Loan-to-Value 65.0%

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