Marathon FL Multi-Family Real Estate, Homes for Sale

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 fabulous 240sf covered deck. Second in from the ocean on a quiet dead-end street, here's a rare opportunity to buy in a sought-after Middle Keys location at this price with a lot of bang for the buck. Light, bright and neat, this home features a very private low-maintenance yard with room for a pool and your Keys toys, a metal roof, an open floorplan, and no HOA. An opportunity for superb location, price and peek-a-boo ocean views seldom presents itself, so don't wait. Live here and relish in the sunny and laidback Keys lifestyle or rent it out and generate income. Seven-day-minimum rentals are permitted. Popular location near beaches, boat ramps, shopping and activities. FaceTime TOURS ARE AVAILABLE FOR QUALIFIED BUYERS.

1297 73rd St Unit Ocean, Marathon

$622,500

3 Beds ⋅ 3 Baths ⋅ 621193 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 floors. The open living, kitchen, and dining space is flooded with natural light through floor-to-ceiling high-impact windows -- bright, airy, and made for everyday living. The kitchen offers stainless steel appliances and generous storage, including two pantries. Step outside to a cute, fenced-in backyard, ideal for kids and pets. Covered parking accommodates two vehicles, and a washer/dryer hookup adds everyday convenience. This home is part of Marathon's deed-restricted affordable housing program. Please call agent for more details on this property.

410 101st St Ocean St Unit B, Marathon

$750,000

4 Beds ⋅ 2 Baths ⋅ 621145 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 unit features a fully updated kitchen with new cabinetry, countertops, and appliances, along with a completely renovated bathroom. Flooring throughout has been replaced, giving both units a clean, modern feel from the moment you walk in. The electrical system has been upgraded for improved safety and reliability -- a meaningful value-add for buyers and investors alike. Whether you're looking for a savvy income-producing property, a multi-generational living setup, or house-hacking potential in a strong rental market, this duplex delivers flexibility with the peace of mind that comes from recent renovations. Don't miss this opportunity to own a turnkey duplex in a great location.

285 A 66th St Unit A & B, Marathon

$1,400,000

4 Beds ⋅ 3 Baths ⋅ 620983 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 your boat at your private 30-ft dock with direct ocean access, and relax in your secluded tropical backyard with a private in-ground pool. An ideal personal getaway or income generator, boasting $45k+ rental income in 2025 and $60k+ in 2026. Beach, boat, pool, and proven performance--schedule your private tour today!

241 Sombrero Beach Rd Unit # 1, Marathon

$1,439,000

4 Beds ⋅ 3 Baths ⋅ 620960 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, and evenings end around your private pool beneath the palms. The location is the difference. From here, one of Marathon's most loved beaches is just moments away, while 31 feet of private dockage puts the ocean within easy reach. Whether the day calls for fishing offshore, snorkeling, a sandbar run, or simply staying home by the pool, this property makes it remarkably easy to enjoy the reasons people come to the Florida Keys in the first place. Inside, 1,840 square feet offers four spacious bedrooms, three baths, an open living area, abundant natural light, and a relaxed coastal atmosphere designed for gathering. Outside, tropical landscaping surrounds a private pool and cabana-style entertaining area, creating a secluded space for long afternoons, dinners outside, and time with family and friends. And for buyers looking beyond the lifestyle, the numbers deserve attention. The property generated $115,000 in rental income in 2025, offering an established income history in one of Marathon's most recognizable vacation destinations. Current annual insurance costs are also notably attractive for a waterfront property, with approximately $4,262 for wind and $1,520 for flood insurance. That combination is difficult to replicate: Sombrero Beach within walking distance, your boat at the dock, a private pool in the backyard, four bedrooms for family and guests, and the ability to generate meaningful vacation-rental income when you're away. This isn't simply a place to own in the Florida Keys. It's a property designed to let you actually use them. Beach. Boat. Pool. Income. It's all here.

219 Sombrero Beach Rd Unit # 2, Marathon

$639,000

2 Beds ⋅ 2 Baths ⋅ 620289 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 currently features two separate 1-bedroom, 1-bath residences, providing immediate income-producing potential while offering outstanding future upside. Whether you're seeking rental income, a redevelopment project, or the opportunity to build a custom Keys residence, this property offers exceptional flexibility and value. Conveniently located near Marathon's restaurants, marinas, shopping, and world-class boating and fishing, this is a unique chance to invest in one of the most sought-after destinations in the Florida Keys.

746 50th St, Marathon

$1,549,000

4 Beds ⋅ 4 Baths ⋅ 620220 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 square feet of interior living space, a pool, 110 feet of concrete seawall, dockage, and deep-water boating access. Each side features 2 bedrooms, 2 bathrooms, approximately 1,057 square feet, open living and dining areas, kitchen, washer and dryer, and enclosed sun porch areas with water views. The layout works well for a full-time residence, second home, investment property, or a live-on-one-side and rent-the-other setup. Outdoor features include an in-ground pool, decking, front porch, low-maintenance gravel yard, and a large circular paver driveway with plenty of parking and trailer storage. Boaters will appreciate the 110 feet of dockage with room for multiple vessels. The lower level includes two garages and substantial storage space, ideal for fishing gear, boating equipment, a cabana-style setup, or general storage. With its waterfront setting, duplex layout, pool, dockage, and close proximity to Sombrero Beach, this property offers multiple options in one of Marathon's most desirable lifestyle locations. B&BATVAI

303 Sombrero Beach Rd, Marathon

$1,250,000

4 Beds ⋅ 4 Baths ⋅ 619866 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, 2BD/2BA on each side, each unit offers approximately 927 sq. ft. of updated coastal living with impact windows and doors, granite countertops, stainless steel appliances, tile flooring throughout, and covered parking. Renovated in 2020, the property blends modern finishes with the relaxed Florida Keys boating lifestyle. A true boater's dream, each side offers its own 30' concrete dock and seawall (60' total) complete with 30-amp shore power and fresh water hookups. Enjoy quick ocean access and easy Gulf access via Vaca Cut, making this an exceptional setup for anglers and boating enthusiasts alike. The waterside outdoor spaces are designed for entertaining and enjoying the Keys lifestyle, featuring string lighting, solar-lit dock pilings, under-dock fish lights that attract snapper and tarpon, and frequent manatee visits along the canal. Located directly next door to Oceanfront Park, owners and guests enjoy immediate access to one of Marathon's premier waterfront parks offering pickleball courts, a dog park, kayak launch, open green space, waterfront walking trails, playgrounds, exercise equipment and community events. Conveniently located 4 miles from Sombrero Beach, and 1.5 miles from Coco Plum Beach. Currently tenant occupied with both units rented month-to-month. This property also has strong vacation rental potential. Ideal opportunity to live in one side while renting the other, or maximize income potential with a fully turnkey investment property in one of the Florida Keys' most desirable boating communities. Current Insurances are very reasonable: $3,841 Flood (Covers both sides) 576 - $4,303 Wind 574 - $4,129 Wind 576 - $860 HO/Liability 574 - $721 HO/Liabilty (Pictures are of 576 99th, 574 is the same layout/finishes. Access can be arranged

574 & 576 99th St, Marathon

$295,000

2 Beds ⋅ 1 Baths ⋅ 619860 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 old. Other Half Duplex in the back sold for $290.000. Only appliance included is refrigerator which works but is rusty on the outside. Needs stove, washer and dryer. A/c is older.

250 66th St, Marathon

$495,000

2 Beds ⋅ 1 Baths ⋅ 619582 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 living. Located in the heart of Marathon and surrounded by mature native landscaping, the residence features CBS construction, an elevated design, a concrete roof, impact-resistant windows, and a newer HVAC system. Inside, the thoughtfully remodeled interior offers an open, comfortable layout with updated flooring, granite countertops, stainless steel appliances, and clean coastal finishes. Two covered parking bays beneath the home provide convenient space for vehicles, a boat, trailer, bicycles, fishing equipment, paddleboards, and the recreational gear that comes with Florida Keys living. Additional open parking and RV or trailer parking add to the property's everyday functionality. With seven-day minimum rentals permitted, the residence offers versatility as a primary home, seasonal retreat, employee-housing solution, or investment property, subject to applicable regulations. Separate electric and water meters provide additional convenience. Ideally positioned near shopping, dining, marinas, beaches, the community boat ramp, and daily conveniences, this move-in-ready property places the best of Marathon within easy reach. The adjoining half duplex is also available for purchase, creating a rare opportunity to acquire the entire property for expanded housing, multigenerational living, or investment potential.

1306 51st St, Marathon

$895,000

3 Beds ⋅ 2 Baths ⋅ 619508 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 unforgettable property. This beautifully reimagined 3-bedroom, 2-bath half duplex offers an expansive 1,342 sq ft of spacious, stylish and light-filled living space--an incredibly rare find for a property of this kind in the Florida Keys. Step outside and you're instantly connected to what makes the Keys so special: 50 feet of brand-new dockage with direct ocean access, making it effortless to spend your days boating, fishing, or cruising turquoise waters at a moment's notice. Inside, no detail has been overlooked. This home has been completely renovated from top to bottom and is offered fully furnished and turnkey--just bring your flip-flops and start living (or earning). The stunning new kitchen, impact windows and doors, brand-new A/C, and sleek, modern finishes create a fresh coastal vibe that feels both luxurious and relaxed. The outdoor space is just as impressive, with a fully rebuilt dock designed for both peace of mind and peak functionality--perfect for accommodating your boat and embracing the ultimate Keys lifestyle. Whether you're searching for a private waterfront escape, a full-time residence, or a high-performing investment, this property checks every box. With short-term rentals allowed, the income potential is as attractive as the setting itself. And for those looking to dream even bigger, there's a rare opportunity to purchase the full duplex--unlocking maximum flexibility, privacy, and earning potential on an entire ocean-access property. Opportunities like this don't come around often--own a spacious, fully renovated waterfront home in one of Marathon's most sought-after locations and start living the life most people only dream about.

150 E 63rd St, Marathon

$895,000

3 Beds ⋅ 2 Baths ⋅ 619502 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, coastal living--an exceptionally rare find for a half duplex in the Florida Keys. Perfectly positioned on the ocean side, you'll enjoy direct ocean access and 50 feet of brand-new dockage--ideal for boating, fishing, and embracing the laid-back Keys lifestyle right from your backyard. Fully renovated from top to bottom, this home is offered completely furnished and turnkey, making it effortless to move in or start generating rental income immediately. Inside, you'll find a stunning new kitchen, impact windows and doors, a new A/C system, and sleek, modern finishes throughout. Step outside to your rebuilt dock, designed for both peace of mind and the ultimate boating experience. With short-term rentals allowed, this property delivers incredible flexibility--whether you're seeking a private island escape, full-time residence, or a high-performing investment. Even better, there's an option to purchase the full duplex, creating a rare opportunity to own an entire ocean-access property with outstanding income potential. Opportunities like this don't come around often--secure your dream waterfront lifestyle in one of Marathon's most sought-after locations!

100 E 63rd St, Marathon

$675,000

2 Beds ⋅ 2 Baths ⋅ 617668 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 with quick access to the open ocean, making boating, fishing and island adventures effortless. Inside, enjoy a freshly painted open layout, tile floors and a granite kitchen, while the low-maintenance backyard offers the perfect space for relaxing or entertaining. Ideal as a weekend escape, second home or full-time residence, with the City of Marathon allowing weekly rentals. Your piece of the Florida Keys is ready!

427 89th St, Marathon

$990,000

4 Beds ⋅ 2 Baths ⋅ 618176 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-term value, this elevated stilted property features concrete construction, a concrete roof, impact windows, newer HVAC systems, and four covered parking bays below. Each unit has been fully remodeled with gray faux wood flooring, granite countertops, stainless steel appliances, and clean modern finishes. The property has a strong income history, previously grossing approximately $69,000 annually, with one side currently left vacant for easy showings. Ideal for investors, employee housing, or living in one unit while renting the other, this duplex offers flexibility, usable outdoor space, covered parking, storage potential, and a central Marathon location close to shopping, dining, marinas, beaches, and daily conveniences.

1306 &1308 & St, Marathon

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Marathon Multi-Family Real Estate