Your tropical private retreat on exclusive Mashta Island. This 6 bed / 5 bath, 3,245 SF Mediterranean villa sits on a spacious 10,000 SF lot with lush landscaping, a resort-style pool, and a private cabana guest suite. Interiors with soaring 10-foot ceilings flow seamlessly to the outdoors, perfect for entertaining and relaxed island living. Intentionally designed with two primary suites (first floor and second floor) enhancing comfort and privacy. The chef’s kitchen features a gas stove, cooking island, and SubZero refrigerator. Enjoy private balconies, a circular driveway, an attached 2-car garage with laundry, covered porches, and generous storage. Key Biscayne offers the ultimate family lifestyle with world-class amenities and a true sense of community.
Sold for $4,700,000 on 07/10/25
$4,700,000
551 S Mashta Dr, Key Biscayne, FL 33149
6beds
3,245sqft
Single Family Residence
Built in 1961
10,000 Square Feet Lot
$4,698,400 Zestimate®
$1,448/sqft
$28,029 Estimated rent
What's special
Zillow last checked: 7 hours ago
Listing updated: July 15, 2025 at 07:21am
Listed by:
Joan Bruggink 786-332-1781,
One Sotheby's International Re
Bought with:
Joan Bruggink, 3270204
One Sotheby's International Re
Source: MIAMI,MLS#: A11776724
Originating MLS: A-Miami Association of REALTORS

Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 6
- Bathrooms: 5
- Full bathrooms: 5
Heating
- Central
Cooling
- Central Air
Appliances
- Included: Dishwasher, Disposal, Dryer, Gas Range, Refrigerator, Washer
- Laundry: In Garage
Features
- Kitchen Island, Pantry, Roman Tub, Split Bedroom, Walk-In Closet(s)
- Flooring: Marble
- Windows: Complete Impact Glass, Skylight(s), Blinds
- Has fireplace: Yes
Interior area
- Total structure area: 4,692
- Total interior livable area: 3,245 sqft
Property
Parking
- Total spaces: 2
- Parking features: Covered, Driveway, Guest, Garage Door Opener
- Attached garage spaces: 2
- Has uncovered spaces: Yes
Features
- Stories: 2
- Entry location: First Floor Entry
- Patio & porch: Patio
- Exterior features: Lighting, Balcony
- Has private pool: Yes
- Pool features: In Ground, Pool Only
- Fencing: Fenced
- Has view: Yes
- View description: Garden
Lot
- Size: 10,000 sqft
- Features: Less Than 1/4 Acre Lot
Details
- Additional structures: Guest House
- Parcel number: 2452050090350
- Zoning: 2001
Construction
Type & style
- Home type: SingleFamily
- Architectural style: Mediterranean
- Property subtype: Single Family Residence
Materials
- CBS Construction
- Roof: Barrel Roof
Condition
- Year built: 1961
Utilities & green energy
- Sewer: Public Sewer
- Water: Municipal Water
Community & neighborhood
Community
- Community features: Beach Club Member Available
Location
- Region: Key Biscayne
- Subdivision: Mashta Island A Replat Of
Other
Other facts
- Listing terms: All Cash,Conventional
Services availability
Get a cash offer in 3 minutes
Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
Estimated market value
$4,698,400
Get a cash offer in 3 minutes
Find out how much your home could sell for in as little as 3 minutes with a no-obligation cash offer.
Estimated market value
$4,698,400