571 S Mashta Drive, Key Biscayne, FL 33149

$6,350,000 · Active

  • 4 beds
  • 3 baths
  • 2,761 sq ft
  • 76 days on market
  • Single Family Residence
  • Built 1964
  • Lot 10,018.8 sq ft
  • 3,722 sq ft total
  • 2 garage spaces
  • Miami-Dade County
  • MLS# A12076783
  • Mashta Island A Replat Of
Photo 1 at 571 S Mashta Drive, Key BiscaynePhoto 2 at 571 S Mashta Drive, Key BiscaynePhoto 3 at 571 S Mashta Drive, Key BiscaynePhoto 4 at 571 S Mashta Drive, Key BiscaynePhoto 5 at 571 S Mashta Drive, Key BiscaynePhoto 6 at 571 S Mashta Drive, Key BiscaynePhoto 7 at 571 S Mashta Drive, Key BiscaynePhoto 8 at 571 S Mashta Drive, Key Biscayne

About this home

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 spaces. The primary suite opens directly to the pool area and features a large walk-in closet and a luxurious bath with steam shower. The property is on a 10,000 SF lot with an ample circular driveway, covered garage for two vehicles and a large additional side parking.

Features

Schools

  • Elementary: Key Biscayne K-8
  • Middle: Ponce De Leon
  • High: Coral Gables

Presented by

BreakThru Realty · (786) 914-1017

Courtesy of

HR 19 Realty LLC · leslie.fuentes@bellsouth.net · Listing agent: Adolfo I Yanes Luciani

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Schedule a showing

Call or text BreakThru Realty at (786) 914-1017 or email sales@breakthrurealty.com to see 571 S Mashta Drive.

Before You Make an Offer

How buying a home in South Florida works

Your Buyer May Already Be Working With BreakThru Realty

Buyers come to BreakThru Realty searching for homes like this one, and many have shared their exact requirements with us: the neighborhood, the price, the bedrooms, the pool, the timing. If you own a home nearby and are weighing a sale, a broker can check it against those requirements before you list, and if no buyer on file fits, show you how we would reach the rest of the market.

BreakThru Realty works with hundreds of prequalified buyers searching for properties. Before you list, a broker reviews what you own, the market around it and whether an existing buyer's requirements match. If none does, you see how we would position it to reach other qualified buyers.

Find Out If We Have Your Buyer · Discuss Selling With BreakThru Realty

A potential match is a conversation, not an offer, until the buyer sees your property and makes one. No buyer is named and nothing about your property or business is shared until you decide to proceed.

Questions About 571 S Mashta Drive

How much is 571 S Mashta Drive?
571 S Mashta Drive is listed at $6,350,000, which is about $2,300 per square foot. The listing page shows comparable active listings and recent closed sales nearby so you can judge the asking price against what buyers have actually paid.
What are the property taxes on 571 S Mashta Drive?
The listing reports annual property taxes of $55,539 for 2025. Taxes are reassessed at the sale price after a purchase, so a new owner's bill can differ from the current owner's; use the mortgage calculator on this page for an estimate.
When was 571 S Mashta Drive built?
571 S Mashta Drive was built in 1964. Age matters for insurance and financing in Florida: ask about the roof, the electrical panel and, for a condo built before the current code, the building's structural reserve study.
How long has 571 S Mashta Drive been on the market?
571 S Mashta Drive has been listed for 76 days. Days on market and price changes are the first signals of how much room there is to negotiate.
Which schools serve 571 S Mashta Drive?
The MLS lists Key Biscayne K-8 (elementary), Ponce De Leon (middle), Coral Gables (high). School assignments are set by the district and can change; verify them with the school board before you rely on them.
How do I see 571 S Mashta Drive?
Request a showing from this page or call BreakThru Realty and a licensed agent will arrange a private tour, in person or by video, and answer anything the listing leaves out.

To request a tour, call (786) 914-1017 or email sales@breakthrurealty.com.

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The 5 bedroom home at 501 Bay Lane, Key Biscayne, FL 33149 is comparable and listed for sale at $5,990,000. Another comparable home, 445 Ridgewood Road, Key Biscayne, FL 33149, sold for $6,400,000 in October 2026. Key Biscayne neighborhoods include Biscayne Key Estates and Tropical Isle Homes. Nearby ZIP codes include 33133 and 33131. This property also neighbors Coconut Grove, Brickell, and Miami. Compare it with the Key Biscayne housing market report.