Grassy Key (58.9) Homes for Sale

Grassy Key (58.9) Homes for Sale

Welcome to Grassy Key, a picturesque subdivision nestled in the heart of Marathon, Florida, within the stunning Monroe County. This enchanting area, known for its lush landscapes and tranquil surroundings, offers a unique blend of island living and suburban charm. Spanning 58.9 acres of pristine land, Grassy Key is a hidden gem that beckons those seeking a serene escape from the hustle and bustle of everyday life.

In Grassy Key, you’ll find an array of homes for sale that cater to a variety of lifestyles and preferences. Whether you’re in search of a cozy waterfront cottage, a luxurious estate with breathtaking ocean views, or a charming single-family home surrounded by nature, this subdivision has something for everyone. The properties here are designed to harmonize with the natural beauty of the Florida Keys, often featuring spacious layouts, modern amenities, and outdoor spaces perfect for entertaining or simply soaking in the sun.

Life in Grassy Key is not just about the homes; it’s about the vibrant community and the lifestyle it offers. Residents enjoy access to pristine beaches, world-class fishing, and a plethora of outdoor activities, from kayaking to snorkeling in the crystal-clear waters. The friendly community atmosphere fosters connections among neighbors, making it easy to feel right at home.

Explore the available homes for sale in Grassy Key today and discover the perfect opportunity to embrace the idyllic Florida Keys lifestyle. Your dream home awaits in this charming subdivision, where every day feels like a vacation!

Newest Grassy Key (58.9) Homes for Sale

$1,600,000
2 Beds ⋅ 2 Baths ⋅ 620832 MLS
2-bedroom, 2-bathroom home in Grassy Key, featuring a deep-water dock with easy access to the ocean, just a short ride away from its Gulf-side location. Enjoy a beautiful pool and ample parking space, along with breathtaking sunsets from your backyard paradise! Each bedroom boasts its own en-suite bathroom, ensuring comfort and privacy. A perfect investment opportunity or a dream retreat!

57477 Morton St, Marathon
$3,400,000
5 Beds ⋅ 5 Baths ⋅ 619897 MLS
CONSTRUCTION COMPLETE! SeaGlass Cove is a brand-new luxury, gated island community located in the heart of the Florida Keys, adjacent to Duck Key. A rare find of just 14 new construction residences offering direct Atlantic Ocean views, a resort-style pool, pickleball court, and sandy beach with the flexibility of a weekly rental. The first floor offers a private two-car garage and covered cabana with spacious outdoor living space that leads out to the pool deck and beach. The second floor features an open floor plan with spacious kitchen, dining, and great room all overlooking the Atlantic Ocean. One en-suite bedroom on this floor provides seclusion for guests. On the top floor, you'll find the primary suite with a luxurious spa bath, a second guest suite and two additional guest bedrooms that share a bath. Luxuriously finished with high-end KitchenAid appliances, waterfall quartz countertops, full-height backsplashes, and much more. Additionally, this residence offers upgrades including an outdoor summer kitchen, an exterior spiral staircase from the second down to the first floor, and a fire pit. SeaGlass Cove is barefoot luxury at its best!

59720 Overseas Highway Unit 10, Marathon
$3,100,000
5 Beds ⋅ 5 Baths ⋅ 619896 MLS
CONSTRUCTION COMPLETE! MOVE-IN AND RENTAL READY! SeaGlass Cove is a brand-new luxury, gated island community located in the heart of the Florida Keys; adjacent to Duck Key. A rare find of just 14 new construction residences offering direct Atlantic Ocean views, a resort-style pool, pickleball court, and a sandy beach with the flexibility of a weekly rental. The first floor offers a private two-car garage and covered cabana with spacious outdoor living space that leads out to the pool deck and beach. The second floor features an open floor plan with spacious kitchen, dining, and great room all overlooking the Atlantic Ocean. One en-suite bedroom on this floor provides seclusion for guests. On the top floor, you'll find the primary suite with a luxurious spa bath, a second guest suite and two additional guest bedrooms that share a bath. Luxuriously finished with high-end KitchenAid appliances, waterfall quartz countertops, full-height backsplashes and much more. Additionally, this residence offers upgrades including an outdoor summer kitchen, an exterior spiral staircase from the second floor down to the first floor, and a fire pit. SeaGlass Cove is barefoot luxury at its best!

59720 Overseas Highway Unit 9, Marathon
$1,675,000
3 Beds ⋅ 2 Baths ⋅ 619885 MLS
Welcome to Key Lime Kottage, a charming waterfront retreat in Grassy Key where life slows down, the water calls, and every day feels like a Florida Keys escape. Currently in a vacation rental program, this turn-key 3-bedroom, 2-bath home offers buyers and investors the rare combination of personal enjoyment, rental potential, privacy, and resort-style living. Kindly provide at least 24 hours' notice for showings. Preferred showing times are Saturdays during check-in/check-out windows, when access is most convenient. Tucked behind lush tropical landscaping, Key Lime Kottage welcomes you with soft yellow cottage charm, a metal roof, white picket appeal, and a peaceful waterfront setting that immediately invites you to relax. From the moment guests arrive, they can imagine themselves slowing down, breathing deeper, and enjoying the Keys lifestyle. A beautiful composite dock leads through the mangroves toward open Gulf views, creating the perfect place for morning coffee, kayaking, paddleboarding, sunset conversations, or quiet moments by the water. The outdoor living area is the heart of the property. With a screened-in pool, spa, covered lounging space, and natural privacy, it feels like a private resort designed for relaxation, connection, and unforgettable memories. Inside, the open living, dining, and kitchen layout feels warm, easy, and welcoming. The home is ready for immediate enjoyment, whether as a personal retreat, a vacation rental investment, or both. For investors, Key Lime Kottage offers strong guest appeal with waterfront living, Gulf views, pool and spa amenities, and proximity to the Dolphin Research Center, The Wreck Restaurant, downtown Marathon, grocery shopping, marinas, entertainment, and MillionAir. Buyers are not just purchasing a property here. They are stepping into peaceful mornings, golden sunsets, waterfront memories, and a Florida Keys lifestyle guests will want to return to again and again.

58773 Overseas Hwy, Marathon
$3,500,000
4 Beds ⋅ 5 Baths ⋅ 609718 MLS
CONSTRUCTION COMPLETE! MOVE-IN AND RENTAL READY! SeaGlass Cove is a brand-new luxury, gated island community located in the heart of the Florida Keys adjacent to Duck Key. A rare find of just 14 new construction residences offering four and five-bedroom floor plans all with direct Atlantic Ocean views, a resort style pool, pickleball court, sandy beach, and the flexibility of a weekly rental. The first floor offers a private two car garage and covered cabana with spacious outdoor living space that leads out to the private beach and pool deck. The second floor features an open floor plan with spacious kitchen, dining and great rooms all overlooking the Atlantic Ocean. One en-suite bedroom on this floor provides seclusion for guests. On the top floor you'll find the primary suite with luxurious spa bath and three additional guest bedrooms. The homes are finished with high end KitchenAid appliances, waterfall quartz countertops, full height backsplashes, custom closets and much more. Additionally this residence offers upgrades including: elevator, outdoor summer kitchen, exterior spiral staircase to first floor, custom millwork, brass fixtures and fire pit. SeaGlass Cove is barefoot luxury at its best.

59720 Overseas Highway Unit 8, Marathon
$2,975,000
5 Beds ⋅ 5 Baths ⋅ 608751 MLS
CONSTRUCTION COMPLETE! MOVE-IN AND RENTAL READY! SeaGlass Cove is a brand-new luxury, gated island community located in the heart of the Florida Keys; adjacent to Duck Key. A rare find of just 14 new construction residences offering direct Atlantic Ocean views, a resort-style pool, pickleball court, sandy beach with the flexibility of a weekly rental. The first floor offers a private two-car garage and covered cabana with spacious outdoor living space that leads out to the pool deck and beach. The second floor features an open floor plan with spacious kitchen, dining, and great room all overlooking the Atlantic Ocean. One en-suite bedroom on this floor provides seclusion for guests. On the top floor, you'll find the primary suite with a luxurious spa bath, a second guest suite and two additional guest bedrooms that share a bath. Luxuriously finished with high-end KitchenAid appliances, waterfall quartz countertops, full-height backsplashes, custom closets, and much more. Additionally, this residence offers upgrades including an outdoor summer kitchen, an exterior spiral staircase from the second down to the first floor, and a fire pit. SeaGlass Cove is barefoot luxury at its best!

59720 Overseas Highway Unit 7, Marathon
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