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571 S Mashta, 
Key Biscayne, FL 33149

$6,350,000

4

Beds

3

Baths

2,761

Sq Ft

Single Family

Virtual Tour

Active

Listed by

Adolfo Yanes Luciani

Hr 19 Realty LLC.

Last updated:

September 8, 2026, 03:30 PM

MLS#

A12076783

Source:

FL RAMC

About This Home

571 S Mashta

Enjoy your own paradise in the paradise—an exceptional, move-in-ready residence on prestigious Mashta Island, one of Key Biscayne's most exclusive and tranquil enclaves. Beautifully remodeled and designed for relaxed yet sophisticated island living, this home offers exceptional indoor and outdoor spaces to enjoy with family and friends. Outdoor living takes center stage with a heated pool and spectacular covered entertainment area featuring a custom BBQ, grill, sink, granite counters and seating for up to 12 guests—the perfect setting for weekend gatherings, celebrations and year-round enjoyment of the Key Biscayne lifestyle. Bright, inviting interiors feature a spacious open layout that seamlessly connects the living, dining and kitchen areas. The impressive chef's kitchen is equipped with premium Viking appliances, generous cooking island and abundant granite counter space. Marble flooring enhances the main living areas, while warm wood floors add character to the private bedroom spa

Home Facts

Single Family

3 Baths

4 Bedrooms

Built in 1964

Subdivision & Development:

MASHTA ISLAND A REPLAT OF

Price Summary

6,350,000

$2,299 per Sq. Ft.

MLS #:

A12076783

Last Updated:

September 8, 2026, 03:30 PM

Added:

15 day(s) ago

Rooms & Interior

Bedrooms

Total Bedrooms:

4

Bathrooms

Total Bathrooms:

3

Full Bathrooms:

3

Interior

Living Area:

2,761 Sq. Ft.

Structure

Structure

Building Area:

3,722 Sq. Ft.

Year Built:

1964

Finances & Disclosures

Finances

Price:

$6,350,000

Price per Sq. Ft:

$2,299 per Sq. Ft.

MLS Logo
The data relating to real estate for sale on this web site comes in part from a cooperative data exchange program of the Realtor Association of Martin County, Inc. MLS. Real estate listings held by brokerage firms other than Coldwell Banker Realty are marked with the IDX logo (Broker Reciprocity) or name and detailed information about such listings includes the name of the listing brokers. Data provided is deemed reliable but is not guaranteed.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.