591 N Mashta Drive, Key Biscayne, FL 33149

Sold $14,000,000 · Aug 3, 2026

Last asking price $15,500,000 · 90.3% of asking · 159 days on market

Similar Homes for Sale Nearby

  • 4 beds
  • 4.5 baths
  • 4,290 sq ft
  • Single Family Residence
  • Built 1960
  • Lot 15,246 sq ft
  • 6,219 sq ft total
  • 2 garage spaces
  • Miami-Dade County
  • MLS# A11924175
  • Mashta Island A Replat Of
Photo 1 at 591 N Mashta Drive, Key BiscaynePhoto 2 at 591 N Mashta Drive, Key BiscaynePhoto 3 at 591 N Mashta Drive, Key BiscaynePhoto 4 at 591 N Mashta Drive, Key BiscaynePhoto 5 at 591 N Mashta Drive, Key BiscaynePhoto 6 at 591 N Mashta Drive, Key BiscaynePhoto 7 at 591 N Mashta Drive, Key BiscaynePhoto 8 at 591 N Mashta Drive, Key Biscayne

About this home

BEAUTIFUL AND UNIQUE WATERFRONT HOME ON EXCLUSIVE MASHTA ISLAND, ON DESIRABLE NORTH MASHTA DR IN KEY BISCAYNE. ELEVATED AND VERY COMFORTABLE 4BR/4.5BA + MAID’S QUARTERS WITH APPROX. 4,290 SQ FT UNDER A/C, SITTING ON A LARGE AND PRIVATE 15,184 SQ FT LOT, IDEAL FOR ENJOYING WITH FAMILY AND FRIENDS.APPROX. 50 FT DOCK WHERE THE OWNERS HAVE DOCKED BOATS OF AROUND 78 FT, WITH DEEP WATER OF ABOUT 8 FT EVEN AT LOW TIDE – A RARE TRUE DEEP-WATER ACCESS ON THE ISLAND. NORTH-FACING CANAL KEEPS THE HOUSE AND OUTDOOR AREAS PLEASANT AND COOLER ALL YEAR ROUND. EASY TO SHOW. BRING YOUR QUALIFIED BUYERS AND BEST OFFERS.

Features

Schools

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

Presented by

BreakThru Realty · (786) 914-1017

Courtesy of

EXP Realty LLC · a.shahin.broker@exprealty.net · Listing agent: Cristina D Anglemont De Tassigny

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Thinking of Selling Nearby?

591 N Mashta Drive sold on Aug 3, 2026. Your buyer may already be looking. BreakThru Realty works with hundreds of prequalified buyers searching for properties. A broker compares your home in Key Biscayne with this sale and the closings nearest it, checks it against the buyers on file and calls you with your selling options. Find Out If We Have Your Buyer, or see homes for sale in Key Biscayne. Call or text BreakThru Realty at (786) 914-1017 or email sales@breakthrurealty.com.

Questions About 591 N Mashta Drive

What did 591 N Mashta Drive sell for?
591 N Mashta Drive sold for $14,000,000 on Aug 3, 2026, about 90.3% of its last asking price of $15,500,000 and about $3,263 per square foot. Recent sales like this one are what buyers and sellers nearby price against.
What are the property taxes on 591 N Mashta Drive?
The listing reported annual property taxes of $112,793 for 2025. Taxes are reassessed at the sale price after a purchase, so the new owner's bill will differ from that figure.
When was 591 N Mashta Drive built?
591 N Mashta Drive was built in 1960 and the listing describes its condition as resale. 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 was 591 N Mashta Drive on the market?
591 N Mashta Drive was on the market for 159 days before it sold, after the asking price was reduced from $16,950,000 to $15,500,000.
Is 591 N Mashta Drive waterfront?
Yes. The listing described the water as none canal front.
Which schools serve 591 N 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.
Is 591 N Mashta Drive still for sale?
No. 591 N Mashta Drive sold on Aug 3, 2026. BreakThru Realty can show you similar homes for sale nearby, or tell you what a home like yours would sell for today; call or text and a licensed agent will follow up.

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A comparable home, 111 Reef Lane, Key Biscayne, FL 33149, sold for $10,850,000 in August 2026. Key Biscayne neighborhoods include Cape Florida and Key Colony. 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.