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CALL: +1 786-468-4380
631 N Mashta, Key Biscayne
#MLS: B26058354
$ 18 500 000
Listing date07/29/2026
CityKey Biscayne, FL 33149
Address631 N Mashta
Area2255 sqft
Tax/year$ 112 485
Built year1958
Bedrooms4
Bathrooms4 / 1
Pooltak
Waterfronttak

631 N Mashta Drive, Key Biscayne FL 33149

Bring all offers for this exceptional waterfront opportunity in prestigious Mashta Island, Key Biscayne. Built in 1958, this Residential Single Family Residence sits on a 15,000 square foot lot with approximately 100 feet of Intracoastal frontage, navigable water, ocean access, a seawall, and direct Biscayne Bay access with no fixed bridges to the Atlantic.

Currently undergoing a complete renovation, the 2,255 square foot home is being transformed with modern finishes, impact windows and doors, updated electrical and plumbing systems, new HVAC equipment, premium flooring, designer lighting, luxurious bathrooms, and a chef’s kitchen. The anticipated design includes custom cabinetry, elegant countertops, premium appliances, spacious living areas, and inviting indoor-outdoor spaces.

Enjoy stunning Bay, Bay View, Intracoastal, pool, and open-water views, along with unforgettable sunsets. The property features a private pool, private dock, deep-water access, and a generous backyard ideal for entertaining, outdoor dining, and relaxing by the water. Parking includes a circular driveway, driveway parking, and a two-car carport.

Interior features include an entrance foyer and walk-in closets. Appliances include a dishwasher, dryer, freezer, microwave, refrigerator, self-cleaning oven, wall oven, washer, and electric water heater. Central air, central electric heating, and energy-efficient appliances and HVAC add year-round comfort. The home is unfurnished, and pets are allowed.

Located in Miami-Dade County, near Keybiscayne Elementary, Ponce De Leon Middle, and Coral Gables High School, this island retreat offers beaches, boating, parks, bike paths, tennis, restaurants, and beautiful year-round weather. Brickell, Downtown Miami, Coconut Grove, Coral Gables, Miami Beach, and Miami International Airport are all nearby.

For a private appointment at 631 N Mashta Drive, Key Biscayne FL 33149, call or text +1 786.468.4380 Tel/WhatsApp.
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