Back to Search
1 / 25
25 photos
+20
591 Mashta Dr
Key Biscayne, FL, 33149
Active$15,500,000
591 Mashta Dr
Key Biscayne, FL, 33149
Active$15,500,000
4
Bedrooms
5
Bathrooms
4,290 sqft
Living Area
1960
Year Built
Key Biscayne, FL, 33149
Active$15,500,000
Key Biscayne, FL, 33149
Active$15,500,000
4
Bedrooms
5
Bathrooms
4,290 sqft
Living Area
1960
Year Built
15,184
Lot Size (sqft)
72
Days on Market
AI Photo Analysis
AI analysis is based on listing photos and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.
Range 482–512 ft over the next 200 ft of canal
Width sampled every 10 ft from dock · perpendicular measurement
Will it fit?
Up to 300 ft
Easy maneuvering
300–375 ft
Fits with care
375 ft+
Tight turning
Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.
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.
See the property and tour the dock. A licensed waterfront specialist will arrange your private showing.
Select a date
Key Biscayne, FL, 33149
Estimate your monthly payment for this waterfront property
$3,100,000 down
Estimated payments only. Actual rates and terms may vary.
Listing courtesy of EXP Realty LLC
Last updated: 5/3/2026
© 2026 Miami Association of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange program of the Miami Association of REALTORS®. Information is deemed reliable but not guaranteed. All properties are subject to prior sale, change, or withdrawal.
IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.
Dock Score™
What shaped this score
Dock Score is a DockOnly.com rating. Not provided by or affiliated with the MLS or listing broker. This information was not provided by the MLS.
$14.8M268 Parkway
Golden Beach, FL
Listed by Coldwell Banker Realty
$15.8M535 Shore Dr
Miami Beach, FL
Listed by GuildStone Group LLC
$17.5M7105 10 Ave
Miami, FL
Listed by Compass Florida, LLC
$13.8M1522 Island Blvd
Aventura, FL
Listed by Douglas Elliman
$12M1398 Bay Dr
Miami Beach, FL
Listed by Compass Florida, LLC
$12.5M9490 Old Cutler Ln
Coral Gables, FL
Listed by One Sotheby's International Realty
Assigned Public Schools
Key Biscayne K-8 Center
Grades PK-8 · Key Biscayne
Ponce de Leon MS
Grades 6-8 · Coral Gables
Coral Gables Senior High
Grades 9-12 · Coral Gables
Nearby Private Schools
School data from Miami-Dade County Open Data Hub. Verify attendance zones with the school district.