Home in 669 S Mashta Drive, Key Biscayne, FL 33149 for sale with MLS# A12033340

Located on the exclusive and highly sought-after Mashta Island, this exceptional property offers a rare opportunity to build your dream home or enjoy the existing beautifully refurbished residence. The home features new bathrooms, updated flooring, and tasteful modern finishes throughout. Designed for relaxed Florida living, the spacious covered terrace overlooks a stunning mosaic-tiled pool, creating the perfect setting for entertaining or enjoying the tropical surroundings. A unique opportunity in one of Key Biscayne's most desirable neighborhoods. Easy to show.

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669 S Mashta Drive, Key Biscayne, FL 33149

Price
Price:
$5,799,000.00
Original List Price:
$5,799,000.00
List Price per Sq Ft (Calculated, Approx.):
$1,714.66
Property Status and Type
Listing Type:
For Sale
Status:
Pending (An offer has been accepted)
Listing Category:
Residential
Property Type:
Single Family House
Description of Last Important Update:
Status Change
Last Major Update on:
July 31, 2026 7:09 pm
Other Special Conditions:
Sold As-is
Rooms Distribution
Bedrooms:
4
Bathrooms Total:
4
Full Bath:
3
Half Bath:
1
Room Type:
Florida Room
Master Bedroom Bath:
Separate Shower, Dual Sinks, Master Bdrm - Ground, Separate Tub
Dining Area:
Formal Dining, Breakfast Area
Measures
Living Area:
3,382 Sqft
Built-Up Area:
3,382 Sqft
Lot Size Acres:
0.23
Property Features
View from the Property:
Garden
Waterfront:
No
Private Pool
Swimming Pool Features:
Above Ground
Security:
Smoke Detector(s)
Appliances:
Dryer, Dishwasher, Disposal, Refrigerator, Washer, Gas Range, Oven
Interior:
High Ceilings, Bedroom Layout - Split, Roman Tub
Exterior:
Outdoor Shower
Patio and Porch:
Patio
Windows:
Blinds
Air Conditioning
Air Conditioning System:
Central Air
Heating
Heating System:
Heat Strip
Property Entrance Faces:
West
Storm Protection Impact Glass:
Partial
Sprinkler Description:
Auto Sprinkler
Storm Protection Accordian Shutters:
Partial
Construction
Year Built:
1960
Roof:
Tar/gravel
Levels:
Two
Construction Materials:
CBS
Flooring:
Vinyl
Number of stories:
2
Road Frontage Type:
Public Road
Flood Zone Code:
AE
Taxes and Expenses
Tax Annual Amount:
$22,013.00
Tax Year:
2025
Parking
Garage Spaces:
0
Covered Spaces:
0
Parking Features:
Driveway
Utilities
Sewer:
Public Sewer
Electric:
Circuit Breakers
Water Source:
Public
Community
Association
Association Membership:
Voluntary
Pets Allowed?
Subdivision Name:
MASHTA ISLAND
Senior Community:
No
Restrictions:
No Restrictions
Terms
Listing Terms Considered by Seller:
Cash, Conventional
Buyer Possession:
Negotiable
Zoning and Legal
Tax Legal Description:
5-6 55 42 MASHTA ISLAND PB 60-93 LOT 11 BLK 2 LOT SIZE 100.000 X 100 OR 19565-4268 03/2001 1
Real Estate Folio Number (Parcel Number):
2452050080180
Zoning:
2001
Public Schools Assigned
Elementary School:
Cholee Lake
High School:
Coral Gables
Middle Or Junior School:
Ponce De Leon
Listing History
Active on the market since:
June 5, 2026
Listing Agreement executed on:
June 5, 2026
Purchase Contract Date:
July 13, 2026
Listing Status Last Changed On:
July 31, 2026 7:09 pm
Photos updated on:
July 31, 2026 7:12 pm
Last Modified:
July 31, 2026 7:13 pm
Additional Information
Courtesy of:
Coldwell Banker Realty
Attribution:
Not provided
Location
Street Name:
Mashta
Street Number:
669
City:
Key Biscayne
State:
Florida
Zip Code:
33149
County:
Miami-Dade
Latitude:
N25° 41' 8.4''
Longitude:
W81° 49' 30.1''
Street Suffix:
Drive
Street Direction Prefix:
S
Property Map

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Neighborhood Stats

Source: U.S. Census Bureau, ACS 5-Year Estimates

Median Household Income $171,982
Median Home Value $1,231,500
Median Rent $3,501/mo
Median Age 43
Population 14,628

Air Quality

Source: AirNow.gov · Miami

🌬️ Air Quality Index (AQI) 45 Good
☀️ O3 35 Good
🫁 PM2.5 45 Good
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Association of REALTORS®
Disclaimer: IDX listing information is presented by Rebonus Brokerage LLC for consumer informational purposes only. The information provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed by the MLS or the real estate broker. This page presents structured listing information sourced directly from the MLS via the RESO Web API feed. Rebonus prioritizes maximum field coverage and data completeness, displaying the most granular MLS-provided attributes available.