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669 S Mashta Drive Key Biscayne, FL $ 5,799,000
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669 S Mashta Drive
$ 5,799,000
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669 S Mashta Drive

Key Biscayne, FL, 33149
$ 5,799,000
Bedrooms4 Baths3.1 Sq 3,382

Monthly Estimate*

$ 35,705

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Single Family Home for sale in Key Biscayne, FL

for $5,799,000 with 4 bedrooms and 3 full baths, 1 half bath. This 3,382 square foot home was built in 1960 on a lot size of 0.23.

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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Single Family Active

Price

$ 5,799,000

Bedrooms

4

Full Bath

3

Half Bath

1

Property Type

Single Family

Taxes

$ 22,013

Style

Lot Size

0.23

Year Built

1960

Town/City

Key Biscayne

County/Region

Miami-Dade

MLS | Web ID

A12033340
Features
General
Sewer Public Sewer
Heating Heat Strip
Cooling Central Air
Possession Negotiable
Roof Tar/Gravel
Appliances Dryer Dishwasher Disposal Gas Range Oven Refrigerator Washer
Garage Spaces 0
Patio/Porch Features Patio
Pool Features Above Ground
Security Features Smoke Detector(s)
Construction Materials Block
Pets Allowed Yes
Year Built 1960
Electric Circuit Breakers
View Garden
Stories Count 2
Levels Two
Property Subtype Single Family Residence
Tax Year 2025
County Miami-Dade
Property Type Residential
Subdivision Name MASHTA ISLAND
Facing Direction West
Garage Y/N false
Total Rooms 1
Full Baths 3
Status Active
High School Coral Gables
City Key Biscayne
Senior Community Y/N false
MLS Area 2520
Carport Spaces 0
Elementary School Key Biscayne K-8
Tax Annual Amount 22013
Middle/Junior High School Ponce De Leon
Virtual Tour https://www.propertypanorama.com/instaview/mia/A12033340
Standard Status Active
Occupancy Type Call Agent
Property Sub Type Additional Single Family Residence
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
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Interior
Interior Amenities Breakfast Area Bathtub Dining Area Separate/Formal Dining Room Dual Sinks Garden Tub/Roman Tub High Ceilings Main Level Primary Split Bedrooms Soaking Tub Separate Shower
Flooring Vinyl
Total Stories 2
Air Conditioning Y/N true
Heating Y/N true
Window Features Blinds
Half Baths 1
Total Bedrooms 4
Total Baths 4
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Exterior
Exterior Amenities Outdoor Living Area Outdoor Shower
Parking Features Driveway
Lot Features Sprinklers Automatic
Water Source Public
Lot Size Area 10000
Building Area Total 3382
Lot Size Acres 0.23
Waterfront Y/N false
Covered Spaces 0
Road Frontage Type Public Road
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* Excluded Features
List By
Maureen Jauregui

Listing Agent

Affordability Calculator

$37,540
Per Month
95%
5%
0%
Monthly Principal & Interest
$35,705
Monthly Property Taxes
$1,834
Monthly Home Insurance
--
Default based on a 30-year fixed rate of 6.25% with 20% down. The estimated payment is offered for convenience and is not an offer of credit. Due to market fluctuations, interest rates are subject to change at any time and without notice. Your individual rate may vary. Rates may differ for FHA, VA or jumbo loans.
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Nearby
0 Elementary School
4268812 Middle School
Coral Gables High School High School
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Pricing History
DatePricePrice ChangeDescription
6/9/2026$5,799,000 Listed Price

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669 S Mashta Drive, Key Biscayne, FL, 33149 is a Single Family Home for sale at $5,799,000 with 3,382 sqft and a lot size of 0.23. 669 S Mashta Drive has 4 bedrooms, 3.1 baths, and was built in 1960. The property's zip code is 33149 which is in Key Biscayne, FL

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