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955 122nd St, Marathon
$3,195,000
3 Beds ⋅ 2 Baths ⋅ 621904 MLS
**RARE WATERFRONT OPPORTUNITY IN EXCLUSIVE YACHT HARBOR ISLAND!** Discover one of Marathon's most desirable waterfront homesites, perfectly positioned on Vaca Cut with breathtaking sunset views and direct boating access to both the Atlantic Ocean and Gulf. Offered for sale for the first time in nearly 30 years, this oversized lot-and-a-half boasts an impressive 155 feet of water frontage, including 135 feet of brand-new 2026 seawall and a rare 20-foot-wide private boat ramp! This highly desirable feature makes the property a true boater's paradise, offering exceptional convenience and access to world-class fishing and cruising. The existing residence requires substantial renovation or redevelopment and is being offered AS-IS. The seller has building plans specifically designed for the property, or bring your own vision to life and create your dream Florida Keys waterfront estate. The expansive lot offers potential space for a resort-style pool, tiki hut, garage, RV parking, boat storage, and more, subject to applicable approvals. This remarkable homesite offers endless possibilities in one of Marathon's most sought-after oceanfront locations!

955 122nd St, Marathon

13755 Overseas Hwy, Marathon
$1,499,000
4 Beds ⋅ 5 Baths ⋅ 621728 MLS
Existing improvements include a duplex and single-family home! A compelling investment and redevelopment opportunity in the heart of Marathon, this multi-family property offers immediate use along with significant long-term potential in one of the Florida Keys' most active markets. Fronting Overseas Highway with excellent visibility and convenient access, the property includes two concrete block buildings. One structure is configured as a three-bedroom, two-bath residence, while the second is arranged as a duplex with two efficiency studio units, each with a private bath. The property includes three residential property rights, creating flexibility for continued income-producing use or future redevelopment. For investors and developers, the location and existing configuration open the door to a variety of possibilities, whether the goal is to maintain the current multi-family setup, reposition the site, or pursue a larger development strategy. An additional opportunity exists to acquire the adjacent parcel along with submerged land rights, allowing a buyer to assemble a larger contiguous footprint and expand the potential of the overall site. Both properties are offered together under MLS number 620305. With its central Marathon location, direct Overseas Highway access, established residential use, and added development upside, this property presents a rare chance to secure a versatile piece of the Florida Keys market.

13755 Overseas Hwy, Marathon

11285 3rd Ave, Marathon
$890,000
3 Beds ⋅ 2 Baths ⋅ 621222 MLS
This is currently the LOWEST PRICED Boatable Canal Front 3-Bedroom Home in all of Marathon FL & it happens to be located on the highly desirable Gulf side of US 1. Boaters will appreciate the 4-foot control depth that provides Open Water Access in just a few minutes to the Gulf of America and less than 10 minutes to the Atlantic Ocean. In place is a Concrete Seawall with approximately 77 foot of water frontage, allowing this property to easily accommodate larger center consoles. This Concrete Block home features 3 beds, 2 baths, 1242 sqft living with a Metal Roof, Concrete Driveway and plenty of Room to Park a RV, Boat Trailer, which is a rare commodity in Marathon. The 8,485 sqft lot offers plenty of room to add a pool. Currently the home offers original 1960's charm offering so much opportunity for the right buyer to transform it into a Modern Coastal Retreat, which is why we just added Virtual Renovations showing what could be done. At its current list price, there is a huge upside as the house right next door at 11295 3rd Avenue Gulf just sold for $1.45M, you have a unique opportunity to acquire, make smart renovations and be sitting on strong positive equity if done right. Due to the lot size, you can even choose to knock down the existing house and build a Brand-New Modern home to your exact specs and take advantage of the deep-water canal. We currently have plans for homes ranging from 1750 sqft to just below 4000 from the well-respected local builders, Design Center. We also have local lenders in place to offer construction financing up to 80%. So much potential and routes you can with this one, NO LOW BALL OFFERS, THIS HOME IS PRICED TO SELL!!!

11285 3rd Ave, Marathon

105 Santa Barbara, Marathon
$1,195,000
3 Beds ⋅ 2 Baths ⋅ 621216 MLS
Discover the potential of this concrete constructed, waterfront pool home tucked away on tranquil Flamingo Island. Offering the ideal opportunity to renovate, personalize, and create your own Florida Keys retreat, this property features three bedrooms, two bathrooms, and nearly 1,300 square feet of interior living space. More than 600 square feet of screened porches invite relaxed indoor-outdoor living, while over 500 square feet of enclosed storage provides valuable additional space for boating gear, bicycles, fishing equipment, and more. Boaters will appreciate the newly constructed 60-foot wood dock, completed in 2025, along with excellent deep-water access through nearby Sister Creek. After a day on the water, unwind beside the concrete pool or enjoy the peaceful island surroundings. Additional improvements include a metal roof installed in 2020 and termite tenting completed in 2025 by Hammerhead Termite Control. Located behind the Florida Keys Golf and Country Club, Flamingo Island is a quiet, dog-friendly waterfront neighborhood close to everything Marathon has to offer. Take the golf cart to Sombrero Beach, Publix, nearby restaurants, and local conveniences. With superior concrete construction, substantial dockage, a private pool, generous outdoor living areas, and an inviting waterfront setting, this fixer-upper presents a rare blank canvas ready to be transformed into your ideal Keys escape.

105 Santa Barbara, Marathon

647 82nd Street Ocean St, Marathon
$649,000
1 Beds ⋅ 1 Baths ⋅ 620950 MLS
Opportunity awaits on 82nd Street Ocean in Marathon! Located on the oceanside in the desirable Lida Subdivision, this canal front property offers an exciting opportunity to own a piece of the Florida Keys waterfront lifestyle. Featuring approximately 50 feet of concrete dockage with quick and convenient access to the Atlantic Ocean, this property is ideally positioned for boaters looking to spend more time on the water. Currently improved with a 1 bedroom, 1 bath manufactured home, the real opportunity lies in the waterfront setting and its future potential. Much of 82nd Street has transformed over the years with newer elevated single family homes, making this an attractive option for a buyer looking to enjoy the property today or explore the possibility of creating a custom waterfront residence in the future. With 50 feet of waterfront, existing concrete dockage, generous outdoor space, and close proximity to the open Atlantic, this property offers a combination that is increasingly difficult to replicate in the Florida Keys. Bring your vision and discover the possibilities at 647 82nd Street Ocean in Marathon.

647 82nd Street Ocean St, Marathon

6500-6600 Overseas Hwy, Marathon
$9,500,000
6 Beds ⋅ 11 Baths ⋅ 610643 MLS
Casa Mañana Shores, located in the heart of Marathon, is a developer's dream or a private owner's potential paradise. This secured gulf front estate offers 3.86 acres of land and is surrounded by an eight foot concrete wall with three gated entrances. The property boasts approximately 540 linear feet of Highway frontage and 695 linear feet of water frontage. It offers 218 feet of concrete seawall, including a cut-in protected boat slip. There is even room for a helicopter landing pad to be installed. This unique property is zoned mixed-use commercial and comes with one commercial transferable building right. It is currently a private residence with a separate garage and workshop. The 10,852 square foot mansion is solid concrete construction. It has ten bedrooms, six and a half bathrooms, a sauna, game room and great room. Repairs are needed, and the interior needs significant updating. An attached partially screened enclosure holds an impressive 12 ft deep swimming pool that measures 25 x 50 ft. The garage/workshop is a separate structure with two rooms with a mini split air conditioner. The existing structures could be demolished for those with a vision, leaving you with a 3.86 acre blank canvas in the center of town. Its versatile zoning designation offers multiple possibilities for residential and/or commercial use. Over the years it has previously housed a motel with a marina, a 19-unit trailer park, and a restaurant. This property presents the opportunity to create the ultimate secluded retreat of your dreams!

6500-6600 Overseas Hwy, Marathon

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