MASHTA ISLAND A REPLAT OF

551 S Mashta Dr, Key Biscayne FL 33149

6 beds · 5 baths · 3,245 ft²

Closed

$5,495,000

Est. Payment $29,247/mo

MLS Sheet Video

6

Bedrooms

5

Bathrooms

3,245

Sq. Ft.

1961

Year Built

2

Garage

55

Days on Market

Description

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.

Facts

MLS#
A11776724
Subdivision
MASHTA ISLAND A REPLAT OF
Property Type
Residential
Property Sub Type
Single Family Residence
Year Built
1961
Lot Size
10,000 ft²
Sq. Ft.
3,245 ft²
Sq. Mt.
301 m²
Price per sq. ft.
$1,693/ft²
Price per sq. mt.
$18,256/m²
Stories
Garage
2 spaces
Pool
Days on Market
55 days
Listed
Apr 15, 2025
Last Updated
Jul 15, 2025
Price/Lot Sq.Ft.
$550/ft²

Comparable homes

Same ZIP, similar price + bedrooms.

Market insights for Key Biscayne

Live MLS-derived activity. Forecast is a conservative rule-of-thumb estimate — not a guarantee.

Sellers market

May 2026

100/100
Buyers marketSellers market

45

Median days to sold

+4.5%

1-year price forecast (est.)

Price & tax history

From the live MIAMI MLS feed. Older history requires the ListingHistory resource (not yet enabled).

7/15/2025Sold$5,495,000
4/15/2025Listed for sale$5,495,000

History reflects fields present on the live MLS record. Full multi-year history requires the MIAMI ListingHistory resource (not yet enabled).

Location

551 S Mashta Dr, Key Biscayne FL 33149Directions

GreatSchools Summary Ratings

Public + private K-12 schools within 5 miles of this listing.

GreatSchoolsData provided by GreatSchools.org © 2026. All rights reserved.

Estimated Monthly Payment

$33,976/mo

Principal & Interest

$29,247

Property Tax

$4,579

Insurance

$150

HOA

$0

20% ($1,099,000)
7.00%
30 years
1.00% (FL avg ~1.0%)
$0/mo
$150/mo

Estimates only. Actual payment depends on credit, lender, insurance carrier, and FL/Miami-Dade specifics. Contact Rangely for a precise quote.

Rangely Adames

Rangely Adames

Sales Associate | Sunland Group

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Accuracy of listing information is not guaranteed. Listing information is provided for personal consumer, non-commercial use, solely to identify potential properties for potential purchase. All other use is strictly prohibited and may be a violation of federal and state law.

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Updated within 24 hours

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