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    Marathon, FL Office Spaces for Lease

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    Islamorada, FL Plantation Key, FL Big Pine Key, FL
    13 properties
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    Combined Office Units with Flexible Layout
    Updated: Jul 30
    Combined Office Units with Flexible Layout

    10095 Overseas Highway, Marathon, FL 33050

    $4,456/Mo
    2,139 sqft
    Combined units 10005 and 10015 provide approximately 2,139 square feet
    Expected availability beginning January 1, 2027
    Potential future division into two suites of approximately 1,069 square feet each
    Current occupant is the Monroe County Supervisor of Elections
    Located at 10095 Overseas Highway, Marathon, FL 33050
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    Combined Professional Office Units
    Updated: Jul 30
    Combined Professional Office Units

    10095 Overseas Highway, Marathon, FL 33050

    $2,228/Mo
    1,069 sqft
    Two office units currently configured as one combined suite
    Expected availability beginning January 1, 2027
    Current occupancy by the Monroe County Supervisor of Elections
    Located along the Overseas Highway corridor in Marathon
    Office layout identified for professional, administrative, medical, governmental, or general office use
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    Professional Office Suite
    Professional Office Suite

    10095 Overseas Highway, Marathon, FL 33050

    $2,228/Mo
    1,069 sqft

    Office space in a maintained commercial building along the Overseas Highway corridor, with potential for professional and administrative uses.

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    Combined Professional Office Units
    Combined Professional Office Units

    10055-10095 Overseas Hwy, Marathon, FL 33050

    $2,228/Mo
    2,139 sqft

    Two adjacent units currently function together, with future division into separate office spaces under consideration.

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    Medical Office Suite with Highway Frontage
    Medical Office Suite with Highway Frontage

    2357 Overseas Highway, Marathon, FL 33050

    $7,000/Mo
    4,188 sqft 0.11 AC lot

    Move-in ready medical office suite with highway frontage and two entrances in Marathon, FL.

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    Combined Office Units
    Combined Office Units

    10005-10095 Overseas Highway, Marathon, FL 33050

    $2,228/Mo
    2,139 sqft

    Flexible commercial suite suited to professional, administrative, medical, governmental, or general office operations.

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    Key Vaca Center: Marathon Office Space
    Key Vaca Center: Marathon Office Space

    10045 Overseas Hwy, Marathon, FL 33050

    $7.20 SF/Yr
    10,288 sqft

    14,000 SF Office Building, Multiple Suites Available

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    Upstairs Office Unit with Covered Parking
    Upstairs Office Unit with Covered Parking

    10045-10045 Overseas Hwy, Marathon, FL 33050

    $1,514/Mo
    1,009 sqft

    Upstairs office unit offers 1,009 SF with covered parking underneath and a large customer lot out front.

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    Professional Office Units
    Professional Office Units

    5701 Overseas Hwy, Marathon, FL 33050

    Contact for pricing
    4,139 sqft

    Professional center includes medical, legal, service, retail, and social-service occupants.

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    Top-Floor Office Suite with Private Bath
    Top-Floor Office Suite with Private Bath

    216217-11400 Overseas Hwy, Marathon, FL 33050

    $2,300/Mo

    Top-floor office suite in a managed commercial plaza with private bath, elevator access, and ample client parking.

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    Shared Office Space with Natural Lighting
    Shared Office Space with Natural Lighting

    9141 Overseas Hwy, Marathon, FL 33050

    Contact for pricing
    83 sqft

    Shared office space in the Marathon Berkshire Business Center with electric and water included.

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    KEY VACA CENTER
    KEY VACA CENTER

    10095 Overseas Hwy, Marathon, FL 33050

    Contact for pricing
    10,288 sqft

    Office / Retail / Medical Offices - 3 spaces available | 1,000 SqFt - 4,020 SqFt

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    Key Vaca Center: Marathon Office Space
    Key Vaca Center: Marathon Office Space

    10045 Overseas Hwy, Marathon, FL 33050

    $7.20 SF/Yr
    10,288 sqft

    14,000 SF Office Building, Multiple Suites Available

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    Based on your search, we've compiled 29 Potential Opportunities for your consideration. Besides 13 Active listings in Marathon, FL, we suggest exploring alternatives. Consider Similar 4 Spaces in Nearby Cities, and Similar 12 Properties for Sales.

    Office Spaces for Lease in Nearby Cities

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

    Highway-Fronted Mixed-Use Property
    Highway-Fronted Mixed-Use Property

    1-88100 Overseas Hwy, Islamorada, FL 33036

    $3,200/Mo

    Flexible space combines residential features with room for business use and outdoor activity.

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    Open Warehouse Flex Space
    Open Warehouse Flex Space

    210 Morada Way, Islamorada, FL 33036

    Contact for pricing
    10,000 sqft

    Open warehouse-style space with five oversized loading doors, two offices, and modern multi-stall bathrooms.

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    Elevator-Served Office Unit
    Elevator-Served Office Unit

    21460 Overseas Highway, Cudjoe Key, FL 33042

    $2,100/Mo
    862 sqft 0.75 AC lot

    Private-restroom office suite in a concrete, elevator-served building with off-street parking.

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    Elevator-Served Office Unit
    Elevator-Served Office Unit

    21460 Overseas Highway, Cudjoe Key, FL 33042

    $800/Mo
    750 sqft 0.75 AC lot

    Three-story concrete building provides off-street parking and direct access to US Hwy 1.

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    Similar Spaces for Sale in Marathon, FL

    Consider Similar Space for Sale. We found 12 Spaces matching your search parameters.

    Mixed-Use Building with Drive-Through
    Mixed-Use Building with Drive-Through

    11401 Overseas Highway, Marathon, FL 33050

    $1,533,333
    3,429 sqft 0.34 AC lot

    MU - Mixed Use Commercial zoning supports office and retail use potential.

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    Contiguous Medical Office Suites
    Contiguous Medical Office Suites

    5701 Overseas Hwy 10, Marathon, FL 33050

    $725,000
    2,556 sqft

    Three contiguous office units offer flexible medical or professional office configurations within a prominent highway retail corridor.

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    Office Unit with Highway Frontage
    Office Unit with Highway Frontage

    5701 Overseas Highway Unit 1, Marathon, FL 33050

    $395,000
    1,128 sqft

    Professional office unit with multiple private offices, a reception area, kitchen, half bath, and central air.

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    Waterfront Mixed-Use Property
    Waterfront Mixed-Use Property

    14 125Th Street Gulf, Marathon, FL 33050

    $3,549,000
    6,128 sqft 1.57 AC lot

    MU - Mixed Use Commercial zoning accompanies a raised concrete building and waterfront redevelopment site.

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    Two-Story Mixed-Use Building
    Two-Story Mixed-Use Building

    2901 Overseas Highway, Marathon, FL 33050

    Contact for pricing
    4,560 sqft 0.35 AC lot

    Flexible commercial suites occupy the lower level, with two residential apartments above and a rear parcel with canal access.

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    Shared Office Coworking Space
    Shared Office Coworking Space

    9141 Overseas Highway, Marathon, FL 33050

    Contact for pricing
    84 sqft 0.47 AC lot

    Professional workspace within a mixed-use commercial property with shared break-room and restroom facilities.

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    Mixed-Use Retail and Apartments
    Mixed-Use Retail and Apartments

    6799 Overseas Hwy, Marathon, FL 33050

    Contact for pricing
    4,858 sqft 0.24 AC lot

    Two-story concrete building with three retail/office units on the ground floor and three residential apartments above.

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    Updated Medical Office Suite
    Updated Medical Office Suite

    5-5701 Overseas Hwy, Marathon, FL 33050

    $265,000

    Updated office suite with a front desk, waiting room, three separate rooms, and one full bathroom.

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    Storefront Building with Pylon Sign
    Storefront Building with Pylon Sign

    2315 Overseas Highway, Marathon, FL 33050

    Contact for pricing
    2,360 sqft

    CBS construction, central air conditioning, and parking support retail or office occupancy.

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    Corner Mixed-Use Land with Office
    Corner Mixed-Use Land with Office

    4000 Overseas Highway, Marathon, FL 33050

    Contact for pricing
    850 sqft 0.87 AC lot

    Elevated corner property with 200 feet of Overseas Highway frontage, enclosed with CBS retaining walls, plus an 850 sq. ft. office.

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    Waterfront Mixed-Use Property
    Waterfront Mixed-Use Property

    11215 Overseas Highway, Marathon, FL 33050

    Contact for pricing

    Mixed-use waterfront property with marina authorization, dockage, commercial space, and a furnished residential component.

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    Marathon, FL Office Spaces Lease Rates & Market Statistics

    Explore 13 Office Spaces for lease in Marathon, FL on Realmo, a commercial real estate exchange covering the Marathon area. The current inventory totals 48,838 square feet of properties — an average of ~3,750 SF per listing.

    Asking lease rates for Office Spaces in Marathon start at $7.20 SF/Yr, average $16.94 SF/Yr, and reach $25.01 SF/Yr at the top of the market. That's a 3x spread between entry-level and premium space, making side-by-side comparison of asking rents and lease terms essential. At $16.94 SF/Yr, the local average runs 52% below Florida's state average of $35.16 SF/Yr.

    Marathon accounts for 25% of the 53 office spaces currently available across Monroe County, where nearby markets include Key West and Key Largo. By space type, the market includes 9 office units and 3 other office properties — other office properties typically offer the lowest entry point, while office units command the highest rates.

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