luxury seaside houses for sale Marathon, United States

Located within exclusive Key Colony Beach, nestled on a lushly landscaped, oversized lot, lies a stunning Oceanfront estate of unrivaled opulence. Boasting in-ground saltwater pool and spa, private sandy beach, firepit, built-in outdoor kitchen, and sprawling composite dock with 40K boat lift, this home caters to elevated Florida Keys living, and the 13,659 Sq. Ft. manicured lot across the street is also included in the sale where you can add a guest house or 2nd home. Enter through soaring glass doors into an elegant foyer, where turquoise Ocean Views are the focal point of the courtyard in the heart of the home. In the South wing, a gorgeous Great Room features access to both the courtyard and a covered veranda, boasting views of the grounds, pool, and Open Water. A well-appointed wet bar, complete with refrigerator and wine cooler, lends itself to entertaining. In the North wing, the showstopping Chef's Kitchen, with premium appliances, including gas range, and large island with storage and seating, is designed for hosting memorable gatherings. Visitors will enjoy superior accommodation in either the downstairs guest suite, or either of two upstairs en suite guest bedrooms. Retire to a palatial primary suite, with large walk-in closet with laundry, luxurious en suite, sitting area, and built-in wet bar, provided abundant privacy in the upstairs South wing. Wake up to magnificent Ocean Views and enjoy morning coffee on the private primary balcony. Outside, host memorable events in the lush backyard oasis. Lounge poolside on the sun deck or beachside in a shaded hammock. Grill up your fresh catch and enjoy sunset cocktails from the well-appointed, built-in outdoor kitchen, and cozy up by the firepit under a blanket of stars, to enjoy balmy ocean breezes. This spectacular property is designed for resort-style living, situated in sought-after Key Colony, boasting incomparable community amenities and with convenient proximity to delectable dining and stores in town

Join us for Brokers Open House today 4-6 pm! This stunning, fully renovated waterfront home in Key Colony Beach offers the ultimate Florida Keys lifestyle, combining high-end finishes with practical, top-tier enhancements for durability and comfort. Step into a bright, open-flow sanctuary anchored by wood-look tile flooring and crisp custom shiplap walls. The heart of the home is a culinary showpiece, featuring an expanded island with hand-selected quartzite countertops, a farmhouse sink, and an instant hot water system. The sunroom offers an elevated retreat with its tongue-and-groove ceiling, while the bathrooms have been transformed with sleek barn-door glass showers and designer finishes. Designed for the elite boater, the outdoor oasis features a 15,000 lb boat lift and a newly replaced dock (2026). The backyard is a private tropical resort, finished with limestone pavers, a composite raised deck, and a brand-new tiki hut. For the dedicated angler, the garage is thoughtfully equipped with a commercial-grade ice maker and a dedicated bait freezer, ensuring you are always ready for a day on the reef. Every inch of the property has been modernized, from the hurricane impact glass that frames every view to the all-new PVC sewer infrastructure installed in 2023. The saltwater pool is optimized for year-round perfection with a dedicated heater and chiller, while new landscaping and privacy palms create a secluded sanctuary. A circular paver driveway and an expanded outdoor storage closet provide the final touches of convenience to this masterpiece. Call today for your private tour! No sign on the property.

This waterfront residence in Key Colony Beach offers the perfect blend of refined comfort, thoughtful design, and effortless island living. Lovingly owned, gently used, and never rented, the home reflects true pride of ownership throughout. An elevator, updated kitchen, and custom baths set the stage, while soaring wood ceilings and an open-concept kitchen, dining, and living area create a light-filled space that flows seamlessly through stackable sliders to a spacious screened porchâ€''ideal for entertaining or unwinding in the coastal breeze. The generous primary suite is a private retreat with porch access and a skylit spa-style bath featuring a jetted tub, walk-in tiled shower, and dual vanities. The lower level is designed for true indoor-outdoor living, featuring a custom, inground swimming pool surrounded by elegant marble decking, along with expansive covered and uncovered paved patios. Mature tropical landscaping enhances privacy, while ample covered and uncovered parking adds everyday convenience. Boaters will love the 37.5-foot dock with boat lift, located on a wide, deep canal with quick, easy access, just minutes to both the open ocean and the Gulf via Vaca Cut. A permitted third full bathroom on the lower level sits next to a large, air-conditioned storage area with sliders that open directly to the patio and dock, making it ideal as an angler's room for fishing gear and water toys. Key Colony Beach is one of the Florida Keys' most desirable island communities, known for its wide, walkable streets, city-maintained infrastructure, and relaxed coastal charm. Residents enjoy access to marinas, a nine-hole golf course, tennis and pickleball courts, playgrounds, dining, and waterfront sunset parksâ€''all just steps or a short bike ride away. Perfectly positioned in the Middle Keys, Key Colony Beach offers a rare combination of small-town island living, world-class boating, and easy access to Marathon's shopping, dining, and local airport.

Experience sweeping ocean views and breathtaking sunsets, from both floors of living in this beautifully updated oceanfront residence in Key Colony Beach—the gem of the Florida Keys. The spacious primary suite features an extended living area on the enclosed balcony with amazing blue water & sunset views, a custom bath, and a generous walk-in closet. Two large guest bedrooms offer comfort and privacy for family or visitors. The gourmet kitchen boasts abundant cabinetry, stunning granite countertops, and opens to a light-filled living and dining area complete with a wet bar and panoramic ocean vistas—perfect for entertaining. This home suits any lifestyle: a high-performing vacation rental, a seasonal retreat for snowbirds, or a full-time residence in a meticulously maintained community of just 31 condos and townhomes. Enjoy resort-style amenities including a large oceanfront pool surrounded by expansive sun decks, a fishing pier with breathtaking sunset views, grilling and private lounging areas, covered parking garage, bike and kayak storage, plus guest parking, shuffleboard, and tennis/pickleball courts. Ideally located near marinas, restaurants, shopping, and local attractions, your island dream awaits in paradise.

Experience Key Colony Point with sweeping ocean views and unforgettable sunsets from both levels of this beautifully updated end-unit oceanfront residence in Key Colony Beach— a true gem of the Florida Keys. With a coveted corner location, this residence is wrapped in extra windows and natural light, creating a bright, airy coastal atmosphere you'll feel the moment you walk in. The spacious primary suite is a private retreat, featuring an extended sitting area on the enclosed balcony with mesmerizing blue-water and sunset views, a custom-designed bath, and a generous walk-in closet. Two large guest bedrooms provide comfort and privacy for family and friends, making hosting effortless. At the heart of the home, the gourmet kitchen offers abundant cabinetry and stunning granite countertops, flowing seamlessly into the sun-filled living and dining areas. A wet bar and panoramic ocean backdrop set the stage for easy entertaining, sunset cocktails, or quiet mornings with the sound of the waves. Whether you're seeking a full-time island residence, a seasonal escape, or a strong vacation rental investment, this delivers. The impeccably maintained community of just 31 condos and townhomes offers resort-style amenities, including a large oceanfront pool with expansive sun decks, a fishing pier with postcard-worthy sunsets, grilling and private lounging areas, covered garage parking, bike and kayak storage, guest parking, shuffleboard, and tennis/pickleball courts. Perfectly located near marinas, dining, shopping, and local attractions, this light-filled end unit offers the best of oceanfront living—privacy, views, and the effortless Florida Keys lifestyle you've been waiting for. It is a licensed 7-day rental with rental history.

Rare opportunity to own a legal duplex being sold as A Single Family Home in the heart of Key Colony Beach in the beautiful Florida Keys. Located just one street off the Atlantic Ocean, 340-350 E Ocean Drive offers exceptional space, boating access, and an amazing investment opportunity with flexibility at a competitive price designed to sell. With 5 bedrooms, 3 bathrooms, and over 2,900 sq ft of living space, this property provides the rare opportunity to own a large waterfront home while still benefiting from the layout of a legal duplex. Sold together as a single property, it offers incredible versatility for full-time living, vacation use, or income-producing investment. Boaters will appreciate 50 feet of dockage with dual docks, allowing space for multiple vessels. Buyer and buyers agent to verify all info

Rare opportunity to secure a prime waterfront homesite on highly desirable Duck Key. This property is being offered for land value, presenting the perfect canvas to design and build a custom island retreat exactly to your vision. Even better, the property is ROGO exempt, meaning no waiting for a new building permit -- a verified build right is already in place (letter on file). Boaters will appreciate the 82 feet of dockage and exceptionally quick ocean access. Two davits that are 5,500 lbs each one and a turner on one of them. Center Island is a prime location for privacy on Duck Key. Navigate under the Seaview Bridge and head out through the Headpins for fast access to open water, or take the main channel route for larger sportfishing vessels. Enjoy all the lifestyle perks Duck Key is known for, including nearby dining at Hawks Cay Resort, a welcoming island community. that is golf cart friendly. Fly into Marathon airport with your own plane or Million Air and then drive 15 minutes to your island oasis. Whether you're planning a full-time residence or luxury vacation escape, this is your chance to build your dream home in one of the Florida Keys' most sought-after boating enclaves.

Experience Florida Keys waterfront living in this beautifully updated residence in Harbor Village on Duck Key. This desirable property includes a deeded dock slip located directly behind the home, offering convenient, immediate access for boating and water activities with quick ocean access. The home features a light-filled, coastal-inspired floor plan with inviting living spaces and water views that enhance the relaxed island lifestyle. Enjoy seamless indoor-outdoor living with a private outdoor area overlooking the canal, ideal for morning coffee, entertaining, or unwinding after a day on the water. Located within the sought-after Hawks Cay Resort community, owners enjoy a resort-style setting with access to nearby amenities including boating, dining, and recreational offerings. This property presents an excellent opportunity for a second home, vacation retreat, or income-producing investment in one of Duck Key's most desirable waterfront communities.

Experience refined oceanfront living on sought-after Duck Key. This double lot estate offers 138 feet of protected deepwater dockage, complete with a solid concrete seawall designed to accommodate a sportfishing yacht, multiple center consoles, and all of your waterfront lifestyle needs. A true boater's paradise, this property offers both privacy and exceptional access to the Atlantic Ocean. The fully remodeled residence is constructed of concrete with a new roof. Inside, seven spacious bedrooms and six bathrooms provide ample accommodations for family and guests. Coastal-inspired interiors feature wood-look tile flooring throughout, woven statement light fixtures, and soaring ceilings with exposed beams and pecky cypress accents. Expansive impact windows and doors frame sweeping ocean views, bringing natural light into nearly every room. The gourmet kitchen anchors the main living space as the heart of the home, with a striking 12' island that creates the perfect setting for gatherings. Outfitted with top-of-the-line appliances, this space is equally suited for everyday living with family or hosting unforgettable evenings of entertaining. Spa-like marble bathrooms further elevate the home, blending comfort with luxury. Designed for both style and function, the property also offers a rare 4+ car garage and abundant storage. Outdoors, a sparkling pool invites afternoons in the sun, while the expansive double lot offers unmatched opportunities for expansion. Whether envisioning a private guest house, a tennis or pickleball court, or exploring the option to build and sell, this rare property provides endless possibilities for both personal enjoyment and investment potential—an uncommon luxury in the Florida Keys. Balancing modern sophistication with coastal simplicity, this sanctuary captures the essence of waterfront living from sunrise over the Atlantic to evenings by the water, in one of the most desirable neighborhoods in the Florida Keys.