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669 S Mashta Dr - Closed Sale

669 S Mashta Dr, Key Biscayne, FL 33149

$
$4,750,000
ruler icon3,382 SqFt.
bedroom icon3 Bedrooms
bathroom icon3½ Baths
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Property Description

LISTING PRICE
$4,950,000
SELLING PRICE
$4,750,000
LISTING DATE
11/30/2025
CLOSING DATE
2/4/2026
BEDROOMS
3
BATHROOMS
3½
INTERIOR SPACE
3,382 SqFt
SELLING PRICE PER SQFT
$1,404.49
TAXES
$22,036 (2025)
REFERENCE
A11922444
NEIGHBORHOOD
Mashta Island

A beautifully reimagined home on one of Key Biscayne’s most desirable streets, South Mashta Drive. With its bold charcoal façade and distinctive presence, this residence stands out immediately while maintaining a warm island charm that makes it feel welcoming from the moment you arrive. Surrounded by mature trees and lush greenery, the setting offers both atmosphere and privacy. Inside, vaulted ceilings and expansive windows fill the space with natural light, creating a soft and inviting ambiance. The great room features a stone fireplace, wide-plank wood floors, and a natural flow to the terrace and pool, bringing effortless connection between indoor comfort and outdoor enjoyment. Every space reflects a carefully curated, cozy feel that enhances the character of the home. The renovated master bathroom offers calming finishes and a serene atmosphere. A private suite provides the perfect accommodation for guests or extended family. Set on a generous 10,000 sq ft lot and enhanced with impact windows, updated lighting, a newer roof, and thoughtful design details, this residence blends timeless appeal, warmth, and the unique island charm that defines Key Biscayne living. A rare opportunity to own a home that feels both distinctive and deeply inviting, in one of the most coveted locations on the island.

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Mark Zilbert
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Listed by One Sotheby's International Realty

The MLS data provided for the property above (MLS#A11922444) is provided courtesy of Zilbert.com. Source: Southeast FloridaMLS. Data updated 3/10/2026. Mark Zilbert is a member of the Zilbert Network and is licensed with Zilbert as a cooperating broker or cooperating agent and may not be the listing agent for this property. Information is deemed reliable but not guaranteed. The listing data on this page comes from the Miami Association of Realtors. All rights reserved. The information being provided is for consumer personal, non-commercial use. Federal law prohibits discrimination on the basis of race, color, religion, sex, handicap, familial status or national origin in the sale, rental or financing of housing.

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