Between $300,000 - $400,000 Marathon FL Real Estate, Homes, Condos for Sale

620904 MLS

It is no secret that the Sombrero Beach neighborhood is one of the most highly sought after established neighborhoods in all of Marathon. Rarely does a vacant lot become available with a building right already attached to it. What makes this 7,125 sqft lot even more rare is that this one comes with approved plans to build a 4 bed, 3 bath, 1966 sqft living home with a 299 sqft rear porch & 75 sqft front porch by the well-respected local builders, Design Center. To make things even easier for the buyers, a local lender is offering up to 80% LTV Construction Financing, allowing you to purchase the lot and fund the construction all at once. It is important to note that this building right is designated SOLEY for local Marathon residents who will make this their Homesteaded primary residence for a minimum of 2 years. This provides a great opportunity for a local family to live in this incredible neighborhood that is walking distance to Sombrero Beach and minutes to Marathon High School. Don't miss the rare opportunity.

408 Calle Limon, Marathon

$330,000

620531 MLS

Canal-front lot in Key by the Sea, located at 6099 Overseas Highway, Unit 55W in Marathon, Florida. This waterfront property features a newly rebuilt dock and installed boat lift, offering immediate boating access to open water. Property includes an official Letter of Determination confirming a transferable building right. Buyers are encouraged to verify all development rights and intended use with the appropriate governmental authorities. A 2022 travel trailer is negotiable in the sale of the lot as personal property. Located in a waterfront community near marinas, restaurants, and shopping, this property offers convenient access to the Florida Keys lifestyle. Strong opportunity for investors, boaters, or buyers seeking canal frontage with existing dock infrastructure and flexible use potential.

6099 Overseas Hwy Unit LOT 55W, Marathon

$370,000

1 Baths ⋅ 620452 MLS

Experience elevated island living at Ocean Isles Fishing Village, a beautifully rebuilt 7-acre gated oceanfront community in the heart of the Florida Keys. These newly constructed concrete block residences are built above flood elevation and offer the rare advantage of 7-day rentals, making them an exceptional choice for a vacation getaway, income-producing investment, or full-time residence. This immaculate, spacious studio is currently operating as a successful short-term rental with existing reservations in place. The new owner has the flexibility to honor the bookings for immediate rental income or cancel them for personal use. Thoughtfully designed for comfort and functionality, the studio features a queen-size Murphy bed that easily folds away to maximize living space during the day, tile flooring throughout, a full kitchen with new appliances, and an LG washer/dryer tower. The monthly HOA fee of just $528 includes both wind and flood insurance, providing exceptional value and added peace of mind. Residents enjoy an outstanding collection of resort-style amenities, including an Olympic-size waterfront pool overlooking the marina, an air-conditioned clubhouse, tiki huts, grilling areas, an ice machine, and fish-cleaning stations. Boating enthusiasts will appreciate the private boat ramp, assigned owner boat slips, and the newly rebuilt seawall, bulkhead, docks, and protected marina, safely sheltered by Jack Tar Flats. Ideally located in the heart of Marathon, Ocean Isles Fishing Village is just minutes from restaurants, shopping, attractions, and the airport. With quick access to both the Atlantic Ocean and the Gulf, world-class fishing, diving, boating, and island adventures are always within easy reach. Don't miss this rare opportunity to own an affordable piece of paradise in the Florida Keys, where resort-style amenities, an unbeatable boating lifestyle, and exceptional investment potential come together in one spectacular waterfront community.

10877 Overseas Hwy Unit APT 35, Marathon

$300,000

1 Baths ⋅ 620324 MLS

Waterfront, buildable RV lot in Key By the Sea in the heart of Marathon! Enjoy 28' of canal frontage with quick, direct ocean access .A building right and the fifth-wheel (personal property) currently on the site convey with this sale. This lot has a spacious screened-in porch, a storage room, and plenty of dock space to relax and fish. This is a great buy for those looking to build a new, waterfront home down the road who want to utilize their RV till then. Also a great buy for those looking for a slip - at this comparable price, why buy just a slip in a marina when you can have a buildable lot AND a place to keep your boat and RV? Boat lifts are allowed. Community amenities include a boat ramp, laundry room, clubhouse with big TV, pool table, kitchen, etc available for private parties, and an oceanfront pavilion area to take in the open Atlantic views. Boat lifts are allowed. Proximate to grocery stores, shops, restaurants, Sombrero Beach and all things in Keys paradise on the water and on land. There's a lot of bang for your buck and this is priced to sell. FaceTime TOURS ARE AVAILABLE FOR QUALIFIED BUYERS.

6099 Overseas Hwy Unit 42E, Marathon

$300,000

620323 MLS

Waterfront, buildable RV lot in Key By the Sea in the heart of Marathon! Enjoy 28' of water frontage with quick, direct ocean access. This lot has a spacious screened-in porch, a storage room, and plenty of dock space to relax and fish. A building right and the fifth-wheel currently on the site convey with this sale. Boat lifts are allowed. This is a a great buy for those looking to build a new, waterfront home down the road who want to utilize their RV till then. Also a great buy for those looking for a slip - at this comparable price, why buy just a slip in a marina when you can have a buildable lot AND a place to keep your boat and RV? Community amenities include a boat ramp, laundry room, clubhouse with big TV, pool table, kitchen, etc available for private parties, and an oceanfront pavilion area to take in the open Atlantic views. Proximate to grocery stores, shops, restaurants, Sombrero Beach and all things in Keys paradise on the water and on land. There's a lot of bang for your buck and this is priced to sell. FaceTime TOURS ARE AVAILABLE FOR QUALIFIED BUYERS.

6099 Overseas Hwy Unit 42E, Marathon

$370,000

1 Beds ⋅ 1 Baths ⋅ 620195 MLS

Welcome to your perfect waterfront retreat! This condo is located at the end of the building and has been beautifully maintained. Comes fully furnished, move-in ready and offers everything you need for comfort and convenience. Step inside to an inviting, open-concept living space that shows very well. Kitchen features quartz countertops, tasteful backsplash and new stainless steel appliances. Enjoy peaceful mornings and relaxing evenings on the screened-in porch overlooking the water, the ideal spot to unwind and take in the view. The condo's prime central location puts you just minutes away from shopping, grocery stores, dining, and your favorite food and beverage spots--everything you need is right at your doorstep. Bonus storage closet outside entrance for your gear. Complex offers heated swimming pool, outdoor common area, on-site laundry and boat dockage. Easy keys living awaits! Call Today!

5301 Ocean Ter Unit APT 2, Marathon

$375,000

2 Beds ⋅ 1 Baths ⋅ 619725 MLS

Opportunity awaits with this cozy 2-bedroom, 1-bath concrete home situated on a uniquely sized 25' x 200' lot. While the home is in need of TLC and updates, it offers a solid foundation for renovation or the perfect canvas for a complete rebuild. The deep lot provides incredible potential for expansion, outdoor living, or creating your ideal Florida retreat. Whether you're an investor, builder, or buyer with vision, this property is full of possibilities.

245 41st St, Marathon

$398,000

2 Beds ⋅ 1 Baths ⋅ 619652 MLS

An exceptional opportunity to own this charming 2-bedroom, second-floor condominium, in Cocoplum Terraces, ideally situated on a 200-foot-wide canal with direct ocean access and no bridges. Weekly rentals are possible. Located just one-half mile from beautiful Cocoplum Beach and park, this waterfront community offers the true Florida Keys boating lifestyle. Amenities include assignable boat slips, on-site boat and trailer storage, Kayak Storage, a high-quality boat ramp with loading dock, and a heated swimming pool at the water's edge. Enjoy peaceful views from your private balcony overlooking the pool and waterway, an updated kitchen with sit up bar, updated flooring and views from your private patio/porch area.

105 Ave D Unit 110, Marathon

$365,000

618579 MLS

SELLER IS OPEN TO OFFERS! Experience the quintessential Florida Keys lifestyle at Sombrero Marina, a casual and welcoming community in the heart of protected Boot Key Harbor. This slip is OWNED BAYBOTTOM. Per the survey, the slip is 87' long, 20.56' wide at the dock and 21.64' wide at the outside pilings. Up to 75' LOA and max 18'9'' beam, per the dockmaster. Slips capable of accommodating vessels up to 75' LOA are exceptionally rare to find in Keys, making this a unique opportunity for owners of larger yachts. This expansive slip also offers the security of baybottom ownership, allowing for full-time liveaboard status. Additionally, convenient financing is available through a local bank to make your island transition seamless. This slip is as versatile as it is spacious, serving as a perfect seasonal home for your vessel or a reliable permanent residence. When you aren't using the slip yourself, the on-site dockmaster can rent the slip out for you, providing a hands-off way to offset ownership costs. Life here is defined by ease; you are just steps away from the iconic Dockside restaurant for live music, meals and a great social atmosphere. The slip includes 30/50 amp service and a deeded land footprint directly in front--ideal for a golf cart. Don't miss this chance to secure one of the few large-scale liveaboard slips in the heart of the Keys.

35 Sombrero Blvd Unit B1, Marathon

$375,000

610716 MLS

Discover a rare opportunity to own an oversized boat slip with live-aboard approval in the desirable Cocoplum neighborhood of Marathon. Offering an impressive 22' width, 80' length, and 6' draft, this slip easily accommodates larger vessels, and a recently removed piling maximizes your available space. Nestled on the ocean side, you'll enjoy direct, fast, no-bridge access to the open water, perfect for avid boaters and anglers. Positioned at the end of the marina in a secure, gated section, the slip offers added privacy and quicker navigation straight to the ocean. A spacious Tiki hut extends your living area onto land, creating an inviting space for relaxing, entertaining, and embracing the island lifestyle. Stylish faux-wall panels on each side provide privacy while still capturing refreshing tropical breezes. It's a versatile, blank canvas ready for your personal touch. The marina features a community pavilion, bath house, and laundry facility, and this slip includes multiple storage units for all your gear and equipment. With a strong monthly rental potential and an unbeatable location, large slips with dedicated land-living amenities like this are truly hard to find. Don't miss the chance to experience this exceptional boat slip in paradise. Your ideal Keys retreat awaits!

100 Ave I, Unit 6, Marathon

$395,000

1 Baths ⋅ 619320 MLS

The Premier Office in First Professional Centre! Secure the only unit in this 17-unit complex with direct Overseas Highway frontage for maximum brand exposure. Unit 1 offers 1,128 SF of versatile space--significantly larger than the standard units in the building. The professional floor plan features a welcoming reception area with a built-in desk, three spacious private offices, a convenient kitchen area, and a half bath. Surrounded by windows, the space is flooded with natural light, creating an inviting environment for clients and staff alike. Ideal for medical, legal, accounting or other professionals. Currently occupied but will be delivered vacant as of July 1st. Own the best-positioned office in Marathon today, please call for a private showing.

5701 Overseas Highway Unit 1, Marathon

$390,000

2 Beds ⋅ 1 Baths ⋅ 619171 MLS

Turnkey island getaway in the heart of Marathon! This charming 1-bedroom, 1-bath home at 5301 Ocean Terrace comes fully furnished and ready for immediate enjoyment. HOA redid all the piping throughout the building, HOA includes pool usage and Boat slips of 28ft. Come see this unit today! Boater's paradise , Waterfront living ,Deep water Dockage ,Florida Keys lifestyle , Vacation Rental Potential.

5301 Ocean Ter Unit APT 7, Marathon

$329,000

1 Beds ⋅ 1 Baths ⋅ 618890 MLS

This charming 1-bedroom, 1-bath waterfront property offers 23 feet of private dockage with direct access straight out to the Atlantic Ocean. Relax and entertain with a spacious outdoor kitchen, convenient outdoor shower, and additional storage. There's also a connection in place for a possible washer and dryer hookup for added flexibility. Seller has engineered and permitted drawings for a boat lift. Whether you're seeking a weekend escape or full-time Keys living, this property delivers the ultimate coastal lifestyle.

6099 Overseas Hwy Unit LOT 20E, Marathon

$340,000

2 Beds ⋅ 2 Baths ⋅ 614591 MLS

Welcome to Stirrup Key Woods. This spacious home represents truly affordable and comfortable living in the Florida Keys with wide open concept living areas, updated and expanded kitchen, spacious bedrooms, one full bathroom updated with stone tile, a half bath, covered parking for two vehicles, impact resistant windows and doors, metal roof, New HVAC system, and great location offering privacy and ease of access to bike paths, public boat ramps and all of the amenities that Marathon has to offer. Call today for more information and schedule a private tour.

111 Stirrup Key Woods Rd Unit 2B2, Marathon

$339,000

1 Beds ⋅ 1 Baths ⋅ 618598 MLS

Don't miss this unique waterfront RV lot in the sought after Key By the Sea community in Marathon. Lot 48E offers approximately 31.5 feet of canal frontage with an overall lot size of about 31.5 by 40.5 feet, over 1,250 sq feet, creating the opportunity to design your own RV setup, outdoor living space, or future waterfront retreat in the Florida Keys. The existing 1980 mobile home is in poor condition and the property is best suited for renovation, replacement, or redevelopment, with value primarily in the waterfront lot and boating access. If the current structure is removed, and with proper permits, a Buyer may place an RV on the lot or construct a code compliant structure in accordance with local regulations and community guidelines. Key By the Sea residents enjoy desirable amenities including a boat ramp, waterfront pavilion, clubhouse, and three on site laundry facilities. The association fee is $192 per month, providing an accessible path to waterfront ownership in a central Marathon location. Whether you are seeking a seasonal escape, RV destination, or long term investment, this property presents a rare opportunity to create your own space within a welcoming waterfront Keys community.

6099 Overseas Hwy Unit LOT 48E, Marathon

$309,000

2 Beds ⋅ 2 Baths ⋅ 617040 MLS

Enjoy peace of mind with this 2-bedroom, 1.5-bath condo in Marathon, Florida. This unit features new impact-resistant windows and doors, new flooring, an updated kitchen, walk-in closets, and covered parking. The inviting main level boasts an open floor plan living area with dining, kitchen, a half bath, and balconies. Upstairs are two spacious bedrooms with a full bathroom and generous closets—ideal for the family. Privately nestled in a tropical setting surrounded by lush vegetation, residents can enjoy calming views of the mangrove forest from the observatory deck. Parking is conveniently situated below the condo building, and privately owned storage units are allowed. This quiet, pet-friendly community offers the perfect balance of privacy and convenience, located close to all that the heart of the Florida Keys has to offer. With a newer A/C (2026), metal roof, and vinyl plank flooring throughout, this home combines comfort, value, and island charm.

111 Stirrup Key Woods Rd Unit 2B1, Marathon

$339,000

1 Baths ⋅ 618872 MLS

Beautifully renovated first-floor studio condo in a prime waterfront boating community. This unit features a full kitchen with granite countertops and breakfast bar, tile flooring in the kitchen and living area, LVP flooring in the sleeping area and fully renovated bathroom (including updated plumbing), plus built-in closet storage. Enjoy the screened-in porch with your morning coffee or evening cocktails. The complex offers deep-water dockage,an assigned boat slip, a private boat ramp, boat trailer parking, vehicle parking, and a heated in-ground community pool. Located on a 200-ft-wide canal with quick ocean and sandbar access. New roof (2023) and new A/C (2022). Seven-night rentals permitted. This is truly a boater's dream!

109 Ave D Unit APT 307, Marathon

$350,000

616563 MLS

Build your dream home on this exceptional 11,600 sq. ft. bayfront lot in the prestigious, gated community of Stirrup Key. Offering open water views, this parcel provides the perfect canvas for a custom residence designed to capture the beauty of the Florida Keys lifestyle. With ample space for your ideal floor plan, this deed-restricted community ensures a neighborhood of high-quality homes while maintaining privacy and exclusivity. Located within the City of Marathon, Stirrup Key combines upscale living with convenient access to world-class fishing, boating, dining, and the best of the Keys. Don't miss this rare opportunity to create your own waterfront paradise in one of Marathon's most desirable enclaves.

313 Stirrup, Marathon

Browse All Marathon FL Between $300K - $400K Properties for Sale

Between $300K - $400K Marathon Real Estate

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