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Marathon Homes on the Bay / Gulf Side For Sale

Most of the properties in the Florida Keys peninsula are either on the bay / gulf side or on the ocean side of the island. The following Marathon homes for sale below are on the gulf side / bay side.

Total Listings 46
Order By:

$475,000
Marathon
Key Colony Subdivision   - MM: 53.00
2 Bed, 2 Baths, 690 SqFt Days Listed: 288
Half Duplex - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Adorable half duplex priced to sell. New LPV plank flooring installed! Great location in a quiet neighborhood. Seller has done extensive improvements with the installation of impact windows & doors, ductless mini splits, removed and replaced all cast iron plumbing to PVC, new cabinets & granite countertops, installed solid core doors, removed paneling and installed drywall, blown in insulation in attic, replaced all screws in metal roof, installed new gable vent fans, can lights and remodeled bathroom. Nice backyard with wood deck and Mature trees. Open up the sliders from kitchen to the covered front porch and let the breeze come in off the ocean. Property is fenced for the pets and kiddos. Stop renting and get into your own slice of paradise!

$480,000
Marathon
Key Colony Subdivision   - MM: 53.00
1 Bed, 1 Baths, 690 SqFt Days Listed: 182
-4.00% ($20,000) 2 Price Changes : Last Change 109 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Fully remodeled 1/1 CBS home in the Florida Keys. Tile flooring throughout, SS appliances, washer/dryer, impact windows and doors, tankless water heater. Marathon allows rentals as little as 7 days. Fenced backyard with screened porch for privacy and entertainment, BBQ area and plenty of parking in front and on side of property with a pull through front and rear gate to facilitate boat and trailer parking. Close to shopping, restaurants and boat ramps. No Association. Come enjoy the Keys lifestyle!!

$629,000
Marathon
Sunset Bay   - MM: 56.00
3 Bed, 3 Baths, 1,056 SqFt Days Listed: 398
-3.23% ($21,000) 1 Price Change : Last Change 200 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Charm and Comfort in Grassy Key - Your Slice of Paradise Awaits! Discover the perfect blend of cozy living and Florida Keys flair with this delightful 3-bedroom, 2-bath haven situated in the serene Sunset Bay community at Mile Marker 56. With a total interior livable area of 1,056 sqft, this single-family residence provides a quaint and comfortable retreat. Enter inside to a space bathed in natural light, featuring cathedral ceilings and a sought-after split bedroom design for optimal privacy. The heart of the home is adorned with granite counters that offer a sleek and modern touch to the well-appointed kitchen. A dedicated laundry room adds to the convenience factor. Each of the three bedrooms is a sanctuary of peace, promising a restful nights sleep after a day of island adventures. The two full bathrooms are meticulously maintained, providing both comfort and function. Unwind on the patio, the ideal spot for sipping your morning coffee or hosting casual get-togethers. While this home isnt waterfront, youre never too far from the ocean or bay in Grassy Key, with ample opportunities to enjoy the water nearby. Rest easy with central heating and air ensuring your comfort year-round, and a durable metal roof overhead. Parking is a breeze thanks to a carport, with a lot size of 6,098 sqft, youll have just enough green space to enjoy without the upkeep of larger estates. Ready to make your Keys dream a reality?

$659,000
Marathon
Stirrup Key Woods   - MM: 52.50
4 Bed, 4 Baths, 1,152 SqFt Days Listed: 9
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

HOME IN THE WOODS, STIRRUP KEY WOODS TO BE EXACT. Comfortable 3 bedroom 2 bath home, open floor plan upstairs with extra space downstairs for entertaining and storage. And there are two upstairs open decks for relaxing outside. There are mature fruit trees, and shade in the yard, both streetside and fenced rear yard. Great Marathon location with convenient shopping, restaurants and many other activities.

$749,000
Marathon
N Marathon Shores   - MM: 51.50
3 Bed, 3 Baths, 1,277 SqFt Days Listed: 100
-2.60% ($20,000) 1 Price Change : Last Change 26 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

CHARMING FAMILY HOME ON A HUGE FENCED LOT in a wonderful family neighborhood. Very close to the boat ramp on Dodge Lake so launching your boat is very accessible. This 3 bedroom 2 bath home has a nice kitchen, updated bathrooms, and convenient laundry. There is a storage shed on the rear fence in the back yard. Plenty of play space for the kids and dogs to run around.

$759,000
Marathon
Stirrup Key Woods   - MM: 52.50
3 Bed, 3 Baths, 1,080 SqFt Days Listed: 55
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Idyllic Stirrup Key Woods retreat, nestled on a lushly landscaped corner lot boasting nearly a quarter acre! This spacious 3-bedroom home, recently remodeled in 2018, is perfect for families and hosting guests alike, and has an Assumable VA rate of 2.8%. As you enter, youll be captivated by the main living area featuring soaring ceilings, exposed beams, and a charming shiplap accent wall that adds warmth and character. The open-concept design seamlessly connects the living space to the kitchen, which is equipped with stainless steel appliances, granite countertops, and ample cabinetry, ideal for entertaining. Step outside to the breezy covered veranda, where you can savor your morning coffee or unwind with evening cocktails while surrounded by nature. The primary bedroom offers added convenience with an updated en suite bathroom, and the guest bathroom features an upstairs laundry closet for ease of living. Built to last, this home includes impact doors and windows throughout, sturdy hardi board siding, and a durable metal roof. The expansive lot is enveloped in tropical foliage and offers a variety of native fruit trees. Relax in the shade of the screened-in downstairs patio, perfect for grilling your fresh catch, or gather around the firepit to enjoy starry nights with friends. A downstairs storage room provides secure storage for tools and equipment. Enjoy the convenience of covered parking under a carport, along with additional open space for vehicles, RVs, or trailers. The property also includes a 30-amp RV hookup for your adventures. Two nearby boat ramps to choose from and ample trailer storage make your days on the water effortless. Situated just minutes from town, this prime location provides a serene retreat while keeping you close to the vibrant energy of Marathon. Dont miss out on this exceptional home, it wont last long!

$775,000
Marathon
N Marathon Shores   - MM: 51.50
3 Bed, 3 Baths, 1,668 SqFt Days Listed: 167
-6.06% ($50,000) 4 Price Changes : Last Change 2 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Welcome to your dream home on Gulfstream Blvd in the heart of Marathon, Florida Keys! This stunning single-family residence offers the perfect blend of luxury, comfort, and convenience. Located close to a variety of amenities including top-rated restaurants, grocery stores, Sombrero Beach and the Harbor Dr. boat ramp, this home is ideal for those seeking the quintessential Florida Keys lifestyle. Step inside to discover an open floor plan that seamlessly connects the living, dining, and kitchen areas. The gourmet kitchen is a chefs delight, featuring a propane Viking range, stove, and hood, a Sub-Zero refrigerator, and a wet bar sink with a garbage disposal. Mexican tile and terrazzo flooring add a touch of elegance and durability throughout the home. This beautiful residence boasts 3 spacious bedrooms and 2 modern bathrooms, plus a bonus Florida Room that can be used as an office, playroom, or additional living space. The newer washer/dryer, A/C, and dishwasher ensure you have the latest in home conveniences. Outside, enjoy the privacy of a fenced-in backyard, perfect for relaxing or entertaining, complete with a storage shed for all your outdoor gear. The pavered driveway, impact windows and doors, and metal roof provide both security and peace of mind. Large yard provides the possibility of putting a pool in your backyard! Dont miss this opportunity to own a piece of paradise. Schedule a showing today and experience the luxury and convenience this home has to offer.Envision entertaining friends in your spacious, open living area or whipping up gourmet meals in your dream kitchen. Relax in your private, fenced backyard - the perfect spot for those lazy Sunday afternoons or starlit evening gatherings. Picture yourself strolling to nearby Sombrero Beach, savoring exquisite meals at local hotspots, or setting sail from the nearby boat ramp. Your new home is your personal oasis, where indoor and outdoor living blend seamlessly.

$785,000
Marathon
Crains Subdivision   - MM: 58.00
3 Bed, 3 Baths, 1,344 SqFt Days Listed: 57
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Currently there is a very low inventory of Above Flood Homes in the city of Marathon priced below $800k. When you consider most lots range from 6k to 7k sqft, you quickly realize this recently updated Above Flood Home located in a quiet neighborhood in Grassy Key across from waterfront is a true rarity as it sits on a 15,000 sqft corner lot with mature landscaping throughout. Yes you read that right, a 15,000 sqft lot, which is double the size of a typical lot. The home is 1344 sqft living via a split open Floorplan and recent improvements include Hardie Board Siding with New Exterior Paint, a Metal Roof, Spray Foam attic insulation, a New A/C in 2021, a Newly Painted Concrete Slab below the home, that offers plenty of space to park your vehicles, a Large Covered Front Porch, a partial Fenced section of the Property with a Newly constructed Fire Pit area to relax and enjoy the peaceful surroundings. There is plenty of room on the property to store multiple boats, a RV, etc. Step inside and you will find upgraded 12x24 Wood Plank Tiles, Brand New Carpet in the Living Room and each of the Bedrooms, New Interior Paint, an Upgraded Kitchen with Raised Panel Wood Cabinets with Crown Molding & a Free Standing Pantry, Quartz Countertops, Stainless Steel Appliances, LED Recess Lighting. Both baths have updated Vanities with easy maintenance Fiberglass Showers. There is even a fully functional laundry room just off of the Kitchen. Step back outside and walk the property and you will quickly realize just how special and rare this is. Being in Marathon, weekly vacation rentals are allowed, and this home is Rent Ready. Less than a mile walk to Sunset Bay Park which offers glorious sunset views with a pier that leads to a kayak launch. Be sure not to miss out on the opportunity to own such a charming home and property in the fabulous Florida Keys!

$789,000
Marathon
N Marathon Shores   - MM: 51.50
2 Bed, 2 Baths, 1,584 SqFt Days Listed: 97
-7.07% ($60,000) 1 Price Change : Last Change 76 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Original owners. Beautiful yard with an extra large lot for your pleasure. Oversized covered carport built for an RV to be shielded from the sun with other parking space for a few cars and boats in the carport. Walk around porch for your pleasure on the second floor and a little view of the Bayfront from this great location. Stilt concrete home with vaulted ceilings and two roomy Master bedrooms with two full bathrooms. Three sets of sliding glass doors to view the open water. Large living and dining area for your entertaining pleasure. Galley kitchen with washer and dryer close by. Boat ramp is close by for your pleasure. Self-contained diesel 15 K generator.

$799,000
Marathon
Grassy Key   - MM: 58.90
3 Bed, 3 Baths, 1,008 SqFt Days Listed: 179
-15.81% ($150,000) 4 Price Changes : Last Change 2 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Welcome to Vacation Vibes - a charming and profitable investment opportunity in the peaceful enclave of Grassy Key, generating over $70,000 annually in rental income! This turn-key property sits on a spacious, fenced lot with a gated driveway, surrounded by lush tropical landscaping that creates your own private oasis complete with a heated pool. Inside, enjoy an airy and functional, vaulted-ceiling living space flowing seamlessly to a cozy screened porch overlooking the pool. Two enclosures under the elevated home provide ample storage for both owners and guests. Enjoy laid back Florida Keys living while offsetting homeownership costs with this exceptional income-producing property!

$820,000
Marathon
Grassy Key   - MM: 58.90
3 Bed, 3 Baths, 1,230 SqFt Days Listed: 95
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Welcome to 71 Dorsett Dr. This 3 bedroom / 2 bath concrete home is waiting for you to move in. Enter the home from a generous platformed staircase to enjoy spacious living areas with updated kitchen, separate laundry room, all new impact windows, new roof and updated bath. There is covered parking for 2 plus off-street parking and room on the side for your boat trailer, as well as a large enclosed workshop and tons of lower level space. There is much more to this property than meets the eye. There are a few nearby public boat ramps and the property owners on Dorsett enjoy some private boat ramp privileges. Please call for more information. Schedule a walk thru of your new Keys Home today!

$825,000
Marathon
Harbor Isle   - MM: 48.50
2 Bed, 2 Baths, 1,279 SqFt Days Listed: 355
-13.16% ($125,000) 2 Price Changes : Last Change 2 Days Ago
Mobile Home - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: Boat Lift60ft.Concre

This home is in an excellent location on a deep water canal and Boot Key Harbor protection. Easy Boat access to Atlantic & Gulf. Walk or Bike to restaurants, beach, grocery stores and Home Depot, Boat ready with 15,000 lb. Lift on a 60 concrete seawall. This fully furnished 2 Bedroom 2 Bath home is the epitome of comfort & convenience, offering a wide range of features that cater to a relaxing and easy going lifestyle. A 3rd bedroom was converted to open social space with a Murphy Bed for additional Guest. The Home is incased in durable vinyl siding and features impact windows, providing a safe haven from the elements. The Interior has been thoughtfully upgraded,, featuring ceramic tile flooring. An open concept living/dining/kitchen that fosters a sense of unity and togetherness. The Kitchen is a Chefs delight with sleek Granit countertops, wine cooler, ample cabinet space, double pantry & stainless steel Appliances. Facing the Canal there is wall to wall Bay Windows providing full water view & sunlight. A Common Bathroom boasting a double vanity, 2 Large Bedrooms with a King bed and Bathroom in Master Suite and a Queen bed & Futon in 2nd Bedroom. Each room if fitted with window treatments & Blackouts for added privacy and comfort. Ample Closet space ensuring all your storage needs & a Washer/Dryer. For outdoor lovers the screened porch is a perfect retreat. It comes with comfortable fans for those warmer days & a built in Hot Tub for ultimate relaxation. A 2nd covered porch facing the canal with views of Boot Key Harbor & partial Sunsets. Property boast a fish cleaning station, water & electric on the Dock. An outdoor shower adds a touch of luxury to your beach days. The storage/workshop offers ample space for your tools & projects. Partially fenced, features trailer storage & excellent parking options. If you are looking for a vacation home, permanent residence or Rental Income 835 25th St. offers an affordable waterfront lifestyle thats hard to beat.

$825,000
Marathon
N Marathon Shores   - MM: 51.50
3 Bed, 3 Baths, 1,538 SqFt Days Listed: 5
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Nestled in a beautiful Marathon Florida neighborhood, this concrete-built gem offers a peekaboo view of the Gulf of Mexico and an unbeatable location. The freshly painted interior and exterior, coupled with recent remodeling, give this home a modern, move-in-ready appeal. The expansive fenced yard is perfect for outdoor activities and offers ample space for future expansion, such as a pool or home addition. A freestanding concrete storage building in the backyard provides additional utility. Enjoy peace of mind with impact windows and doors, as well as PVC plumbing under the home, eliminating concerns about outdated cast iron pipes. Parking is a breeze with plenty of space for cars, trucks, RVs, or trailers. Boating enthusiasts will love the neighborhoods public boat ramp, just around the corner, offering easy access to world-class fishing and diving in the Gulf of Mexico. Conveniently located near Publix, Winn Dixie, Home Depot, Sombrero Beach, Marathon Airport, and an array of restaurants and shops, this home combines comfort, practicality, and Florida Keys charm. Your slice of paradise awaits!

$860,000
Marathon
N Marathon Shores   - MM: 51.50
3 Bed, 3 Baths, 1,693 SqFt Days Listed: 44
-1.71% ($15,000) 1 Price Change : Last Change 12 Days Ago
Single Family - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

***NEW PRICE! ***Spectacular water views of Dodge Lake (AKA The Lagoon) from almost every room and direct access to Florida Bay and the Atlantic! This impeccably cared-for 3/2 single-family home has it all! Spacious & airy split bedroom plan has mini-split individually controllable a/cs and impact-resistant windows & doors. The kitchen is perfect for the chef with designer quartz countertops, a farmhouse sink, new appliances, and more! French doors lead you outside to a private oasis in the backyard where youll be grillin & chillin while living your best life in the fabulous Florida Keys! Theres even an outdoor shower so you can rinse all your dive & fishing equipment after a day on the water! And the location is Key on a huge corner lot right by the boat ramp! Talk about easy access! Lots of space for parking multiple vehicles & your boat, not to mention theres plenty of room for a pool! This is truly a MUST SEE! Schedule your private showing today!

$949,000
Marathon
Venice   - MM: 52.00
3 Bed, 3 Baths, 1,512 SqFt Days Listed: 83
Single Family - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: Davits,Davit Pads60f

Check out this HANDYMAN Special! Have you been looking for the perfect investment property ~ dreaming of creating your next Florida Keys escape/second home or weekly vacation rental property, or all of the above? This property is priced As-Is with remodel quotes of $150K for all the spalling work and $486K total for the home remodel, new pool, new dock & tiki hut (From a local contacting company.)This split level CBS home is situated on a large lot iwith 60 ft of water frontage and is located in the most family friendly neighborhood in Marathon. You will love the Quick and Easy Gulf & Ocean (via Vaca Cut or 7 mile bridge) and being centrally located to all the best that Marathon has to offer; shops, restaurants and park/beaches. Community Boat ramp is close by with bike paths for ease of access. Located close to the airport. This property needs TLC and will be perfect for someone ready to put forth the effort and turn this property into an amazing legacy for the future!Call today for questions and inquiries. House is sold as-is and no repairs will be done.

$1,099,000
Marathon
Sea Air Estates   - MM: 52.00
2 Bed, 2 Baths, 1,003 SqFt Days Listed: 50
Half Duplex - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: 375ft.Cut/Natural

This stunning property is a meticulously crafted half duplex featuring two bedrooms and two bathrooms. Built for the homeowner rather than as a spec home, no expense was spared in the design and renovations, ensuring a high level of quality throughout. The home boasts a durable concrete structure with a metal roof and impact windows for added safety and energy efficiency. The interior showcases beautiful shiplap siding that adds character and charm. The landscaped yard is thoughtfully designed, featuring a serene water feature in the heated and chilled pool, creating a tranquil outdoor oasis. A double swing gate on the side enhances accessibility and privacy, while the fenced yard offers security and space for outdoor enjoyment. For those who love the water, the property is situated on a deep water canal, complete with a 37.5 ft seawall made of cap rock concrete. The dock features a fish cleaning station, swim ladder, bumpers, dock posts, and lights, and is permitted for a 7K boat lift with power, water, and lighting. The lower level includes a storage area, providing practical space for all your boating and fishing gear. Inside, the home features window treatments on all windows, adding privacy and style to each room. The kitchen stands out with a spacious granite island that seats six, stainless steel appliances, and ample cabinet space. Recessed lighting throughout creates a warm ambiance, while double insulated and soundproof walls ensure comfort and tranquility. This property allows for 7-day rentals, making it an attractive investment opportunity. With its custom finishes and thoughtful details, this home beautifully combines luxury and functionality, making it an ideal choice for those seeking a vibrant waterfront lifestyle.

$1,100,000
Marathon
Key Colony Subdivision   - MM: 53.00
3 Bed, 3 Baths, 1,275 SqFt Days Listed: 25
Single Family - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: Boat Lift75ft.Concre

Welcome to 11300-1st Avenue Gulf. This 3 bedroom 2 bathroom single family, ground level, canal front home offers open water access to both the Gulf and the Atlantic Ocean, and a screened in heat optional in ground pool. Open floor plan, master bedroom has ensuite bathroom, outdoor screened patio dining area next to pool. Conveniently located near great restaurants, post office, shopping. Call for more information and schedule a viewing of this home. Priced to sell!

$1,199,000
Marathon
Venice   - MM: 52.00
3 Bed, 3 Baths, 1,562 SqFt Days Listed: 35
Single Family - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: n/a

This stunning waterfront property is an ideal coastal retreat for those seeking both relaxation and adventure. Situated on a prime lot with easy access to the Gulf, the home boasts a 60 dock, perfect for boating enthusiasts. The dock includes 50-amp shore power, a fish-cleaning station, and a bait freezer, making it a fishermans paradise. Step outside into your private oasis. The highlight of the backyard is the oversized swim spa/pool measuring 8x12 feet, perfect for a relaxing soak or a refreshing swim. The pool is heated for year-round enjoyment, and theres also an outdoor shower to rinse off after a day on the water. A spacious screened-in porch allows for comfortable outdoor living, free from pests. For those who love to entertain, the property includes a tiki hut complete with a gas grill and plenty of seating for a laid-back barbecue.Home is sold rental ready with advanced bookings in place. Youll find no shortage of activities, with cornhole and beach equipment available for use. Spend your days lounging by the pool, fishing off the dock, or enjoying a game of cornhole with friends and family.

$1,295,000
Marathon
Sea Air Estates   - MM: 52.00
2 Bed, 2 Baths, 1,232 SqFt Days Listed: 8
Single Family - Contingent - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: Other Dockage

A MUST SEE... Sea-Air Estates gulf front home in a lovely quiet neighborhood with spectacular open water views of the Gulf of Mexico. Totally remodeled updated open floor plan, stilted single family two-bedroom, three bathroom home with plenty of natural light and amazing views surrounding you. LP gas tank in ground for water heater and kitchen range, modern appliances and quartz counter tops. New AC 2022. Newly upgraded large screened back porch/deck to relax and enjoy the tranquil surroundings. All impact windows and doors upstairs and downstairs. New outdoor wood stairs with concrete landings. Two covered car ports and large driveway for ample parking, and room for boat trailers and RVs. Plenty of room to add a pool in the spacious back yard. Launch your paddleboards or kayaks right from the back yard with plenty of shallow water access. Downstairs storage/workshop enclosure that you can make into your own space. It is a non-conforming legal space, approximately 420 sf with a full bath. Bonus, easement access to bulkhead just across the street to dock your boat for easy access. Definitely a must see!

$1,490,000
Marathon
Key Colony Subdivision   - MM: 53.00
3 Bed, 3 Baths, 1,926 SqFt Days Listed: 117
-9.70% ($160,000) 2 Price Changes : Last Change 2 Days Ago
Single Family - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: Boat Lift75ft.

Welcome to 11295 3rd Avenue Gulf in Marathon Florida! This spacious 3 bedroom 2 bathroom home offers ground level access, modern amenities and fantastic open water access to both the Gulf and the Atlantic Ocean. Wide open living spaces offer more than enough space for family and friends or enjoy all that the outdoors have to offer from the screened patio, dockside firepit lounge, shade under the poolside tiki or take a dip in the heated and chilled pool. The dock is 75 of concrete seawall with a 12,500 lb. boatlift. Whether youre looking for a permanent home, a tropical getaway or an investment, this home is for you. This is an active vacation rental. Call today for more information and schedule a private walk thru of your Keys dream home.

The information being provided by the Florida Keys MLS is exclusively for consumers' personal, non-commercial use, and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed accurate by the MLS. Data last updated on 11-26-2024.
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