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Marathon, FL Residential Income Properties for Sale

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Key Colony Beach, FL Duck Key, FL Conch Key, FL

17 results

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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 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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$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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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 Highway, Marathon, FL 33050

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Waterfront Restaurant with Development Potential

$3,300,000

1,832 SF

Waterfront Restaurant with Development Potential

Iconic waterfront restaurant with residential property and development rights.

1240 Overseas Highway, Marathon, FL 33050

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$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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$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 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

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$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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$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 Half-Duplex Near Sombrero Beach

$690,000

834 SF

Waterfront Half-Duplex Near Sombrero Beach

Updated waterfront half-duplex with new dock near Sombrero Beach.

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

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$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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$11,000,000

4,066 SF

Waterfront Residences: Luxury & Income

Three designer homes near Coco Plum Beach with income potential.

2394 Coco Plum Drive, Marathon, FL 33050

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$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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$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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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 Potential Opportunities for your consideration. Besides 17 Active Listings in Marathon, FL, we suggest to view alternatives - similar 6 Off-Market properties to explore as potential leads.

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

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101 11Th Street Ocean

Multifamily properties • 1,000 SF

Value Estimation by Request

101 11Th Street Ocean, Marathon, FL 33050

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442 48Th Street Ocean

Multifamily properties

Value Estimation by Request

442 48Th Street Ocean, Marathon, FL 33050

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104 52Nd Street Ocean

Multifamily properties

Value Estimation by Request

104 52Nd Street Ocean, Marathon, FL 33050

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308 Sombrero Beach Rd

Multifamily properties

Value Estimation by Request

308 Sombrero Beach Rd, Marathon, FL 33050

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520 12Th Street Gulf

Residential income properties

Value Estimation by Request

520 12Th Street Gulf, Marathon, FL 33050

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Marathon, FL Residential Income Properties Investment Opportunities Market Analysis

Explore 23 residential income properties for sale in Marathon, FL, showcased through 17 active listings on our real estate platform. These investment opportunities span a total of 70,147 square feet of properties for sale, with an estimated market value of $53,401,000.

Sale prices for residential income properties in Marathon, FL start at $650,000, averaging $3,560,066, 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.

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Top Commercial Asset Segments

Demographics Overview

Population 11K

Population Growth (5Y) +12.2%

Median Household Income $83,776

College Educated 36.9%

High-Yield Neighborhoods for Strategic 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	$3.2M

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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Marathon, FL Residential Income Properties for Sale

Waterfront Redevelopment Opportunity in Marathon

Rare waterfront property with redevelopment potential in Marathon, Florida.

Marathon Duplex with Redevelopment Potential

Duplex in Marathon, Florida Keys, with redevelopment potential.