34 houses for sale in Key Colony Beach city

Now priced UNDER recent appraised value of $4,500,000! Embrace the RARE opportunity to own 1.75 acres of open water paradise in the prestigious, gated community of Stirrup Key. Over 600' feet of direct, open Gulf frontage, you'll enjoy spectacular sunrises and sunsets from nearly every vantage point, including a charming sunset gazebo overlooking the iconic Seven Mile Bridge in the distance. The custom Mediterranean-style residence captures the essence of resort living with expansive pavered patios, sparkling elevated pool, and spacious lounging areas absolutely perfect for entertaining against a stunning Gulf backdrop. Five protected basin docks provide sheltered boating access in the marina, while terraced tropical gardens cascade toward the water, lined with mature palms and lush landscaping for a serene coastal ambiance. Inside, soaring cathedral ceilings, wood plantation shutters, and an airy great room with real coral fireplace showcase timeless Keys craftsmanship. The split-bedr

Over 3400 sqft of Luxury Living is featured with this 2007 custom built CBS in the gated community of Stirrup Key Sub in Marathon. Elevated water views, a deeded boat slip, protected community marina, multiple outdoor living areas and a private pool. Designed for both everyday comfort and entertaining, this multi-level home offers generous interior space, flexible living areas, and a thoughtful indoor-outdoor layout. The ground level features a three-car garage, ample storage, and direct access to the pool area, creating an easy flow for relaxing, hosting, and enjoying the Keys lifestyle. The second floor serves as the main living level with two bedrooms, two full baths, a full kitchen, and open living and dining areas that extend onto a large screened lanai. This level is ideal for casual gatherings, quiet mornings, and evening breezes. The third floor offers a private primary suite, sitting area or fourth bedroom, bar/kitchenette, fireplace, spa-style bath, and an expansive lanai wit

Discover this beautifully updated full duplex in the heart of Marathon, set on an oversized 10,000 sq ft lot among mature native trees that provide shade and privacy year-round. Elevated on a stilted structure with a concrete roof, this solid CBS concrete construction property offers durability, peace of mind, and long-term value. Each unit has been fully remodeled with grey faux wood floors, granite countertops, and stainless steel appliances, creating a clean, modern coastal feel. Recent upgrades include new HVAC systems and impact windows for added comfort, efficiency, and storm readiness. This duplex has a strong income history, previously grossing approximately $69,000 annually. One side is currently being left vacant for easy showings, making this an excellent opportunity for investors, employee housing, or living in one unit while renting the other. The elevated design, concrete roof, and oversized lot make this property both practical and appealing, offering valuable space for

Tucked approximately 800 feet off direct Atlantic Ocean access, this striking three-story, stilted concrete residence represents a bold new chapter in coastal living. As the first of its kind in the community, this home sets the standardpaving the way for future development while ushering in a modern, elevated lifestyle in the Florida Keys. Thoughtfully designed, the property offers approximately 33 feet of brand-new concrete seawall, providing convenient dockage and effortless access to the turquoise waters that define Keys living. Though the lot may be compact, it is truly small but mighty, maximizing functionality with ample storage, generous living space, covered parking, and seamless water access. The solid concrete construction delivers durability and peace of mind, while the vertical design captures views and enhances airflow and light. Offered turnkey (minus exclusions), this home allows for immediate enjoymentwhether as a primary residence, second home, or investment opportuni

Ocean Breeze makes island living easy in this Florida Keys waterfront enclave. This fully furnished, newly constructed manufactured home is outfitted with tasteful coastal decor across the sunny 2 bed, 2 bath space. The upstairs private balcony overlooks the ocean for morning coffee. All modern appliances including washer and dryer and dishwasher complete the package. Enjoy full amenities in this well-maintained community including swimming pool, marina access, kayak launch, BBQ area, and proximity to all Marathon has to offer including watersports, dining, the local airport and quick access to the Gulf and Ocean. This residence is organized on a leasehold principle making home ownership stress-free

Seller Financing Available | Pre-Construction Waterfront Retreat | Deep Water | Sunrise Views Located right across from the island of Boot Key, this exceptional pre-construction offering combines protected deep-water living, open-water views, and one of the most desirable boating locations in Marathon. Explore scenic kayak trails for beginners and advanced paddlers, surrounded by rich nature and wildlife where dolphins and manatees are frequently seen. The property faces east for breathtaking sunrises, while Boot Key provides natural protection during stormscreating an ideal, secure harbor environment. With approx 60 feet of deep-water dockage, enjoy ample space for large or multiple vessels, excellent maneuverability, and direct access to world-class boating. Inside the harbor, convenience is unmatched with 5 restaurants and 3 gas docks just minutes away. Commencing soon on this with construction, the custom home is designed with modern coastal style and true Keys practicality. The re

Attention investors and business owners: This four-unit apartment building presents a compelling opportunity in the heart of the Florida Keys, offering immediate income with long-term strategic value. Each of the four units features a comfortable two-bedroom, one-bath layout, with long-term tenants currently in place, providing stable cash flow from day one. Each apartment is separately metered for electricity, allowing tenants to manage their own usage-an added benefit for ownership efficiency. The property also offers ample on-site parking, a valuable amenity in the Keys, along with a shared laundry facility located at the rear of the property, enhancing convenience for residents. The property is currently operating at an approximate 5.87% cap rate, with clear room for growth. Rents are presently below market, creating a realistic path for increased returns, with projections indicating the potential to achieve a 7.4%+ cap rate over time as adjustments are made in accordance with appl

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 unique waterfront property has 5 units on the property and all are long term rentals. There are 5 BUILDING RIGHTS that come with this property (please ask Listing Agents for details