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$19,900,000
5 Beds ⋅ 4 Baths ⋅ A12071221 MLS
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.

520 S Mashta Drive, Key Biscayne
$18,500,000
4 Beds ⋅ 5 Baths ⋅ B26058354 MLS
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.

631 N Mashta Drive, Key Biscayne
$3,600,000
3 Beds ⋅ 3 Baths ⋅ A11932240 MLS ⋅ 1 BLDG.
Step into luxury with this spectacular water front 3-bedroom, 3-bath residence boasting 3,120 sq ft of elegant living space. Perfectly situated in the heart of Key Biscayne. This home offers panoramic bay views and resort like beach access creating the ultimate coastal lifestyle. Expansive open floor plan with abundant natural light, floor to ceiling windows and wrap around balconies. Gourmet kitchen with premium appliances and elegant bathrooms. This unit offers luxury, comfort and excellent location perfect for those looking for serene retreat with the conveniences of island living minutes from exciting urban Miami.

881 Ocean Drive Unit 20A, Key Biscayne
$237,000,000
5 Beds ⋅ 9 Baths ⋅ A12005335 MLS
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.

485 W Matheson Drive, Key Biscayne
$1,265,000
2 Beds ⋅ 2 Baths ⋅ A12008541 MLS
Spectacular Views!!! Enjoy the Open Bay, Canal & Park views from this bright 2/2 split plan residence with abundant natural light and breathtaking Sunsets! Marble floorings and high end remodeled kitchen with top of the line finishes featuring Viking, Wolf, Thermador and Sub Zero appliances. Experience a resort lifestyle with direct beach access and all the amenities The Towers of KB has to offer: Restaurant, two pools, BBQ/Gazebo overlooking beach, media room, card/billiard room, meeting room, toddler playroom, two lighted tennis courts, beauty salon & state of the art fitness center.

1121 Crandon Boulevard Unit D903, Key Biscayne
$25,900,000
4 Beds ⋅ 4 Baths ⋅ A11869417 MLS
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.

200 Harbor Drive, Key Biscayne
$3,650,000
2 Beds ⋅ 4 Baths ⋅ A11810648 MLS ⋅ Oceana Key Biscayne BLDG.
Exceptional opportunity to live in Oceana, the pinnacle of luxury and exclusivity in Key Biscayne! The unit spans 1,830 sq ft with an open floor plan 2-bedroom, 3.5-bathroom plus den that can be used as a small bedroom or office. Conveniently located on an oceanfront property with a wide range of resort-style amenities, including beach service with chairs, towels, and umbrellas, a beach entry pool with cabanas, a lap pool, a cutting-edge fitness center, tennis courts, a spa, a residents-only restaurant, a putting green, volleyball courts, and more!

360 Ocean Drive Unit 205S, Key Biscayne