Key Colony Sub (53.0) Homes for Sale

Key Colony Sub (53.0) Homes for Sale

Welcome to Key Colony Sub, an enchanting subdivision nestled in the heart of Marathon, Florida, within the stunning Monroe County. This vibrant community is a true gem of the Florida Keys, where the sun-kissed shores meet the tranquil waters, offering residents an idyllic lifestyle characterized by both relaxation and adventure.

Key Colony Sub boasts a diverse selection of homes for sale, catering to a variety of tastes and preferences. Whether you’re seeking a cozy waterfront cottage or a luxurious estate with breathtaking ocean views, you’ll find it here. Many properties feature modern amenities, spacious layouts, and private outdoor spaces perfect for entertaining or simply enjoying the serene surroundings.

Living in Key Colony Sub means embracing the quintessential Florida Keys lifestyle. With easy access to pristine beaches, world-class fishing, and a plethora of water sports, outdoor enthusiasts will feel right at home. The community is also conveniently located near local shops, dining options, and recreational facilities, ensuring that all your needs are just a stone's throw away.

For those who appreciate a close-knit community, Key Colony Sub offers a welcoming atmosphere where neighbors become friends. The charm of this subdivision is further enhanced by its lush landscaping and well-maintained streets, creating an inviting environment for both families and retirees alike.

Explore the homes for sale in Key Colony Sub and discover your perfect slice of paradise in Marathon, FL. Don’t miss the opportunity to become part of this vibrant community where every day feels like a vacation!

Newest Key Colony Sub (53.0) Homes for Sale

$990,000
3 Beds ⋅ 2 Baths ⋅ 621222 MLS
This is a great opportunity to purchase a Concrete Block Deep Water Access Canal Front Home in the Heart of Marathon on the Gulf side of US 1 below $1M. With about a 4 foot control depth and an existing concrete seawall in place and about 77 feet of frontage, this property can easily accommodate the larger center consoles. Open Water Access in just a few minutes to the Gulf and about 10 minutes to the Atlantic Ocean. The home features 3 Beds, 2 baths, with 1,242 sqft on a large 8,485 offering sqft lot with a Concrete Driveway, Room to Park a RV, Boat Trailer, and room for a pool. The rear Covered Screen Lanai overlooks the canal, and the Covered Carport has built in Storage closets. The home features a Metal Roof and inside it does offer original 1960's charm with a ton of potential as right now it has original Kitchen Cabinets, Terrazzo Floors, Mini Splits in almost all the rooms for efficient air conditioning and original windows. Both baths have original tile showers with 1 being a Full Shower and the other featured a tub/shower combo. With the house right next door just selling at 11295 3rd Avenue Gulf 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.

11285 3rd Ave, Marathon
$1,150,000
3 Beds ⋅ 2 Baths ⋅ 621176 MLS
Welcome to 11295 6th Ave Gulf -- a waterfront corner lot in one of Marathon's best-kept-secret neighborhoods. Nestled on a quiet street directly across from a nature preserve, this 3-bedroom, 2-bath canal home delivers something almost impossible to find in the Keys: real privacy, real waterfront, and real potential. Eighty feet of deep-water canal frontage on an oversized 8,000 sq ft corner lot. One canal from the Gulf of America with 10-minute access to Vaca Cut -- your gateway to world-class offshore fishing, diving, lobstering, and reef exploration. The spacious vaulted-ceiling screened porch overlooking the canal is where you'll spend every morning and evening. A 385 sq ft concrete dock with davits is ready for your boat. The corner lot provides ample parking for trailers, vehicles, and toys -- a true premium in the Keys. This is also a performing investment property. The home operates as an active vacation rental on Airbnb and VRBO with verified income. Sold fully furnished and turnkey -- a new owner can generate income from day one. Recent updates include a new 2025 HVAC system, 2025 impact sliding glass door, hurricane shutters on all windows, and all furnishings included. The home is solid, comfortable, and rental-ready as-is -- with room to add your own personal touches and make it truly yours. For the visionary buyer: build up on this premium corner lot and you could be rewarded with Gulf of America views. An elevated waterfront home on this lot -- with a nature preserve across the street and 80 feet of canal -- would be one of the most compelling properties in Marathon. The location is irreplaceable. The potential is limitless. Come see it.

11295 6th Ave, Marathon
$979,000
5 Beds ⋅ 3 Baths ⋅ 620847 MLS
SELLER FINANCING AVAILABLE | TURNKEY INCOME TRIPLEX IN THE HEART OF MARATHON Welcome to a fully renovated, income-producing triplex in one of the Florida Keys' most sought-after markets. With three updated units generating consistent revenue in gross rental income, this is a rare turnkey opportunity for investors -- or a smart way for an owner-occupant to live for free while collecting rent from the other two units. The Property: Unit 1 -- 2BR/1BA, spacious layout, modern open-concept interior, currently leased Unit 2 -- 2BR/1BA, fully renovated, currently leased Unit 3 -- Efficiency unit with well-equipped kitchenette, ideal for a single tenant or short-term renter, currently leased All units are fully updated, tenants are on flexible month-to-month leases (ideal for a buyer who wants immediate cash flow with future flexibility), and ample on-site parking makes this property easy to manage. Prime Marathon location puts residents minutes from shops, restaurants, and everything the Middle Keys lifestyle has to offer. Bonus: A Letter of Determination with 3 rights is available, and the seller is offering financing with $500,000K down over a 5 year term at a competitive rate -- a major advantage in today's rate environment. Whether you're building a rental portfolio or looking for owner-occupied income property in the Keys, this triplex checks every box. Schedule your private showing today -- inventory like this doesn't last in Marathon.

10833 2nd Avenue Gulf Ave, Marathon
$1,649,000
3 Beds ⋅ 3 Baths ⋅ 620079 MLS
Discover the perfect blend of Florida Keys waterfront living and income potential in this fully furnished home located on a residential waterway with Gulf access in the heart of Marathon. Designed for relaxation and entertaining, the home offers comfortable living spaces, beautiful water views, an enclosed Florida room, a private pool, and a private dock. Whether you are looking for a primary residence, seasonal retreat, or investment property, this home provides the flexibility to fit a variety of lifestyles. The private dock offers convenient boating access to the Gulf, making it easy to enjoy fishing, paddleboarding, boating, and everything that makes the Florida Keys lifestyle so special. Spend your days exploring the water, entertaining by the pool, or simply enjoying the peaceful waterfront setting. A standout feature of this property is its established vacation rental success. The home is actively operating as a popular vacation rental with future reservations already on the books, providing an opportunity for immediate income generation. Buyers have the flexibility to honor existing reservations and continue the rental operation, or modify future bookings to accommodate their own plans and personal use. With its waterfront location, proven rental history, future bookings in place, and desirable Marathon location, this property offers a unique opportunity to enjoy the Florida Keys while benefiting from the flexibility of an established income producing asset. Whether your goal is full time island living, a seasonal getaway, or a property that helps offset ownership costs through rental income, this home is ready for its next chapter.

11260 6th Ave, Marathon
$1,370,000
5 Beds ⋅ 3 Baths ⋅ 616064 MLS
FLORIDA KEYS WATERFRONT VALUE 5 BEDROOMS • DIRECT GULF ACCESS • TWO-STORY LAYOUT Located in Marathon, this spacious two-story waterfront property has direct Gulf access, flexible living space, and future rooftop deck potential with possible bay views from upper-level enhancements. The home is functional and move-in ready, with prior updates already completed and major systems operational. Natural light, multiple living areas, and the flexible layout provide opportunities for full-time living, seasonal use, guest space, boating lifestyle, or future personalization over time. Expansive outdoor deck space and waterfront positioning create room to enjoy boating, fishing, water activities, and relaxed Florida Keys living. The property layout also allows flexibility for future outdoor enhancements, tropical landscaping, shaded entertaining areas, or additional outdoor living concepts. With l waterfront inventory in the Florida Keys, this property presents a chance to secure a larger waterfront home in Marathon with long-term flexibility and future potential. Property is being sold as it is, allowing the next owner flexibility to personalize and update over time.

11250 5th Avenue Gulf Ave, Marathon
$1,349,000
3 Beds ⋅ 2 Baths ⋅ 617009 MLS
Turnkey vacation rental on 75ft deep-water canal with heated pool & dock -- one canal to Gulf, 10 min to Vaca Cut. Impact windows, metal roof, new HVAC, PVC plumbing, 200-amp electric -- every major system updated. Smart home with remote pool heat. Commercial ice machine. Sold fully furnished & rental-ready. Steps from quiet nature preserve. Screened porch & carport. New washer/dryer & fridge.

11285 6th Ave, Marathon
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