Key Biscayne, FL Houses For Sale

Spectacular contemporary estate set on a coveted cul-de-sac along cape florida dr., one of key biscayne’s most prestigious and private addresses. Situated on a 23, 724 sq ft lot with +250 ft of waterfront and an elevation of 8.71 ft above sea level, this home offers 8 bedrooms (including a guest suite and 2 staff quarters), 8.5 baths, a private dock, boat lift, and resort-style pool. A grand foyer with soaring ceilings introduces an architectural masterpiece designed by renowned architects and built by interscope. Additional features include an elevator, a full-home generator, a reinforced concrete seawall, a 2-car garage plus a porte-cochere for 4 cars, and a driveway for 8+ cars. Discover the exceptional potential of this unique estate—a perfect blend of elegance, privacy, and premier waterfront living.

Embodying a true resort lifestyle, this rare key biscayne waterfront residence is defined by its extra-long, 134 ft water frontage and its elegant private ipe dock with direct canal-to-ocean access. The contemporary home, extensively rebuilt in 2018, is move-in ready, featuring 6 bedrooms, refined finishes, and tailored wood floors throughout. Outdoor living unfolds effortlessly with a sleek pool and spa and inviting spaces for intimate lounging, open-air dining and entertaining. Minutes from golf, tennis, padel, a protected state park and beaches, and within easy reach of brickell, coconut grove, and miami airport. Nothing to add. Everything to enjoy. A must see.

Welcome to your own slice of paradise! Enjoy breathtaking sunsets from your private dock on this waterfront property boasting 100 feet of direct biscayne bay frontage. Ideally located on mashta island. Set on a 15, 000 sf lot, the home features 5 beds, 5 baths, including 2 bayfront primary suites with stunning views, impact windows and doors throughout. The open-concept layout flows seamlessly from the living and dining areas to the modern kitchen and out to the pool and entertainment patio, with floor-to-ceiling glass doors that open to blend indoor and outdoor living. Tranquil guest suite upstairs offering privacy and views. It also features an oversized 2-car garage, covered parking, and a spacious driveway for guests. Perfect to move in, renovate, or build your dream waterfront estate

Seize a rare opportunity to create a landmark waterfront estate on one of the largest residential lots in key biscayne’s exclusive mashta island enclave. Spanning an extraordinary 22, 140 square feet, this exceptional property offers 138 feet of pristine water frontage and sweeping open water views, providing an unparalleled setting for a world class residence. Plans by renowned architect, pablo corazzini of vitalini corazzini architects, are available to the buyer, offering a thoughtfully conceived vision that takes full advantage of the property’s remarkable scale, premier waterfront setting, and spectacular sunsets. The proposed design creates an extraordinary canvas for sophisticated indoor-outdoor living and entertaining, should the buyer choose to pursue the concept. With its exceptional lot size, expansive water frontage, and coveted mashta island address, this is a truly irreplaceable opportunity to create a legacy estate in one of south florida’s most prestigious waterfront communities.

New construction, this extraordinary custom cape dutch residence is a masterwork of timeless design, brought to life by duncan and heuser design and development, with interiors curated by james duncan. Every detail, from the graceful gabled facade to the refined finishes within, reflects a rare devotion to craftsmanship and enduring elegance. Offering six generously proportioned bedrooms and six and a half beautifully appointed bathrooms, this home balances gracious scale with warm, livable comfort. Soaring ceilings, thoughtfully placed windows, and an effortless flow between rooms create a sense of light and openness throughout, while curated materials and bespoke millwork lend a distinctly luxurious character to every space. This is more than a house; it is a legacy residence, designed to be lived in beautifully for generations. A truly rare offering for the discerning buyer seeking timeless architecture, exceptional interiors, and uncompromising quality throughout.

Bring all offers! Exceptional waterfront opportunity in prestigious key biscayne. Set on a 15, 000 sq. Ft. Lot with 100 feet of water frontage, this residence offers open-water views, direct biscayne bay access, and no fixed bridges to the ocean. Currently undergoing a complete renovation, it will feature modern finishes, impact windows and doors, new systems, spacious living areas, a chef's kitchen, and luxurious bathrooms. Enjoy a private dock, deep-water access, pool, breathtaking sunsets, and an unmatched boating lifestyle in one of south florida's most desirable communities one of the most compelling waterfront opportunities currently available in all of key biscayne. Perfectly positioned on the exclusive and highly coveted mashta island, this exceptional property offers approximately 100 feet of prime waterfront, deep-water dockage, direct biscayne bay access, and no fixed bridges to the atlantic ocean, creating an unparalleled opportunity for boating enthusiasts and yacht owners. Mashta island has long been recognized as one of south florida's most prestigious residential enclaves, offering exceptional privacy, quiet tree-lined streets, oversized waterfront estates, and immediate access to the open waters of biscayne bay while remaining only minutes from brickell, downtown miami, coconut grove, coral gables, miami beach, and miami international airport. Very few neighborhoods offer this combination of island living, security, boating lifestyle, and proximity to the city's financial and cultural centers. The residence is currently on renovation designed to transform the property into a contemporary waterfront estate while preserving the exceptional value of its location and oversized waterfront parcel. This is substantially more than a cosmetic renovation. The project includes major improvements throughout the residence, including redesigned living spaces, upgraded electrical and plumbing systems, new hvac equipment, impact-resistant windows and doors, premium flooring, modern architectural lighting, designer finishes, and a completely reimagined interior intended to meet today's luxury lifestyle expectations. Upon completion, the home is anticipated to offer spacious entertaining areas, beautifully appointed bedroom suites, bathrooms, an impressive chef's kitchen featuring custom cabinetry, premium appliances, elegant countertops, and thoughtfully designed indoor-outdoor living spaces that maximize the spectacular waterfront setting. The property's exceptional orientation provides beautiful water views and unforgettable sunsets while creating an ideal environment for entertaining, family gatherings, and year-round outdoor living. The expansive backyard offers generous space surrounding the swimming pool together with multiple areas for outdoor dining, lounging, and enjoying the waterfront lifestyle that has made key biscayne one of the most desirable residential communities in south florida. For boating enthusiasts, few properties can offer the combination of oversized waterfront, private dockage, deep-water access, and unrestricted navigation to biscayne bay and the atlantic ocean without fixed bridges. Whether accommodating a large sport yacht, cruising yacht, center console, or multiple vessels, the waterfront configuration provides flexibility rarely available in today's market. Key biscayne continues to be recognized as one of south florida's most exclusive island communities, celebrated for its pristine beaches, excellent schools, private clubs, marinas, tennis facilities, parks, bicycle paths, restaurants, and relaxed coastal lifestyle. Residents enjoy the unique advantage of living within a peaceful island environment while remaining only a short drive from miami's world-class shopping, fine dining, cultural institutions, private airports, international business centers, and professional sports venues. The supply of premium waterfront homes on mashta island remains extremely limited due to the neighborhood's established character and finite number of waterfront parcels. As a result, opportunities to acquire large waterfront lots with substantial dockage and direct ocean access continue to be highly sought after by both domestic and international buyers. The combination of location, waterfront dimensions, boating accessibility, oversized lot, and comprehensive renovation creates a property with exceptional long-term appeal. Showings are strictly by appointment with the listing agent.. All measurements, dimensions, lot size, square footage, waterfront frontage, dock dimensions, room sizes, zoning, taxes, permits, specifications, plans, renderings, and property information are believed to be accurate but are not guaranteed and should be independently verified by buyer. Renderings, conceptual plans, floor plans, specifications, and construction updates are available upon request when applicable. This offering represents an extraordinary opportunity to secure one of key biscayne's waterfront residences . Whether as a primary residence, seasonal retreat, or long-term investment, this property combines one of south florida's most desirable locations with an outstanding boating lifestyle and exceptional future value. Bring all offers.

Key biscayne waterfront – unbeatable location. Experience miami’s skyline views from your private saltwater pool and man-made beach. This elegant four-bedroom residence features marble floors, impact-glass windows, and a modern open kitchen filled with natural light. Enjoy two electric boat slips, direct water access for kayaking or paddleboarding, and a spacious two-car garage. Currently leased until december 1, 2025.

485 w matheson drive is one of america’s most iconic waterfront estates, representing a rare convergence of presidential history, cinematic legacy, and unparalleled waterfront scale. Set on approximately 2.38 acres with an extraordinary 862’ of direct biscayne bay frontage, the property captures sweeping, unobstructed views of the miami skyline and open bay, offering a level of presence and exclusivity rarely found in south florida. Once the “winter white house” of, the estate also achieved cinematic fame as the frank lopez residence in scarface, with original architectural elements still preserved, including the iconic glass elevator. Offers 5br + gym (can be converted to 6th br) 7+2ba, and approximately 13, 500 sf (per owner) across three levels, featuring soaring 24’+ ceilings, marble floors, and walls of glass framing breathtaking bay views. Expansive living, dining, and kitchen areas open to large terraces, creating seamless indoor-outdoor living ideal for both everyday comfort and grand-scale entertaining. Resort-style grounds include a piano-shaped saltwater pool, cabana bath, lush tropical landscaping, and expansive lawn areas with artfully integrated lighting extending the estate’s experience well beyond sunset. A private marina, formerly a presidential helipad—features rare 3-phase power and dockage for yachts up to 200’, plus over 34, 000 sf of submerged land, making this one of miami’s most significant and irreplaceable waterfront holdings in the world.