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Marathon Duplex & Multi-Family Homes for Sale
Income Properties in the Middle Florida Keys
Duplexes and multi-family homes in Marathon offer opportunities for rental income, multi-generational living, or owner-occupant investment. These properties appeal to both local residents and out-of-area investors seeking a foothold in the Florida Keys rental market.
This section covers listings from Layton (MM 68.5) through Duck Key, Grassy Key, Key Colony Beach, Coco Plum, Sombrero Beach, and south to the Seven Mile Bridge. Some properties are licensed for short-term rentals, while others are suited for long-term tenants or owner-occupied duplexes.
Building styles vary from elevated concrete homes to older ground-level structures. Zoning regulations and rental restrictions differ by area, so it’s important to verify whether vacation rentals, long-term leases, or employee housing are permitted on a case-by-case basis.
Explore Other Property Types in Marathon
Listings Start Below
Note: The listings below show the most recent 100 duplex and multi-family properties in the Marathon area. Use the filters to refine by zoning, rental licenses, unit count, or price.
Have questions about rental restrictions, long-term leases, or income potential? Contact Jim Signor for local insight and help evaluating investment options.
Multi-Family Properties
Ocean views - what a gem! This elevated two-bedroom half-duplex offers tons of natural light and peaceful peek-a-boo ocean views from the living area, front porch and fab...
- 2 Beds
- 1 Baths
- 621223 MLS
Mid Town Marathon Townhome -- Deed Restricted Affordable Housing Spread out in this 3-bedroom, 3-bath half-duplex built for townhome-style living across three full flo...
- 3 Beds
- 3 Baths
- 621193 MLS
Move-in ready and thoughtfully updated top to bottom, this full duplex offers two versatile living spaces with major systems and finishes refreshed in recent years. Each ...
- 4 Beds
- 2 Baths
- 621145 MLS
Prime waterfront living on Sombrero Beach Road! This vibrant 4BD/3BA retreat (1,840 sq. ft.) delivers the total Florida Keys lifestyle. Walk to sandy Sombrero Beach, keep...
- 4 Beds
- 3 Baths
- 620983 MLS
Welcome to 219-2 Sombrero Beach Road, a 4-bedroom, 3-bath waterfront retreat where mornings can begin with a walk to Sombrero Beach, afternoons can be spent on the boat, ...
- 4 Beds
- 3 Baths
- 620960 MLS
Full Waterfront Duplex in Desirable Sombrero Beach! Live the ultimate coastal lifestyle with this beautifully updated waterfront duplex in the highly sought-after Sombre...
- 4 Beds
- 4 Baths
- 620882 MLS
Newly updated waterfront half-duplex just a short walking distance to Sombrero Beach. This canal front property features brand-new vinyl plank flooring throughout, and an...
- 2 Beds
- 2 Baths
- 620876 MLS
Newly updated waterfront half-duplex just a short distance to Sombrero Beach. This bright and inviting property features brand-new vinyl plank flooring throughout, a bea...
- 2 Beds
- 2 Baths
- 620875 MLS
INCOME PRODUCING! Unlock the potential of this rare Marathon property located in the desirable Vaca Village neighborhood. Situated on a 5,158-square-foot lot, this duplex...
- 2 Beds
- 2 Baths
- 620289 MLS
Waterfront duplex opportunity on Sombrero Beach Road in Marathon, just about 1 mile from Sombrero Beach. This stilted full duplex offers 4 bedrooms, 4 bathrooms, 2,114 sq...
- 4 Beds
- 4 Baths
- 620220 MLS
Beautifully renovated and fully turnkey duplex located on a deep-water canal in the heart of Marathon. This rare income-producing property features TWO spacious homes, 2B...
- 4 Beds
- 4 Baths
- 619866 MLS
Investment Opportunity in the Heart of Marathon. This Half Duplex has Two Bedrooms and One Bathroom. Ample parking in the front yard. Metal roof is approximately 5 years...
- 2 Beds
- 1 Baths
- 619860 MLS
Updated, elevated, and centrally located, this 2-bedroom, 1-bath half duplex offers an appealing combination of durable construction, modern finishes, and flexible Keys l...
- 2 Beds
- 1 Baths
- 619582 MLS
Welcome to your slice of paradise in the heart of Marathon! This exceptional ocean-side retreat is where luxury, lifestyle, and opportunity come together in one unforgett...
- 3 Beds
- 2 Baths
- 619508 MLS
Welcome to your slice of paradise in the heart of Marathon! This beautifully reimagined 3-bedroom, 2-bath waterfront retreat offers 1,342 sq ft of spacious stylish, coast...
- 3 Beds
- 2 Baths
- 619502 MLS
Affordable entry into the Keys lifestyle! Easy living in paradise awaits at this solid CBS half-duplex in Marathon. Step out to your 35-ft. dock on a clean, deep canal w...
- 2 Beds
- 2 Baths
- 617668 MLS
'United States Bankruptcy Auction. The Listing Price is for MLS Purposes only. Actual Price will be determined at Auction. The Auction will take place Live via Zoom on Th...
- 2 Beds
- 2 Baths
- 618269 MLS
Magnificent legal duplex in the vibrant heart of the Florida Keys, offering highly sought-after 7-day rental flexibility--an exceptional advantage for investors and homeo...
- 4 Beds
- 4 Baths
- 618025 MLS
Charming 2 bedroom, 2 bathroom half duplex in Marathon with highly desirable 7-day rental flexibility. Located just four properties from the Atlantic Ocean, this stilted ...
- 2 Beds
- 2 Baths
- 618501 MLS
Solid CBS full duplex in the heart of Marathon, set on an oversized 10,000 sq. ft. lot with mature native trees for added shade and privacy. Built for strength and long-t...
- 4 Beds
- 2 Baths
- 618176 MLS
