Home in 591 N Mashta Dr Key Biscayne for sale with MLS# A11924175

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.

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591 N Mashta Dr, Key Biscayne, FL 33149

Price
Price:
$15,500,000.00
Previous Asking Price:
$16,950,000.00
Original List Price:
$16,950,000.00
Property Status and Type
Listing Type:
For Sale
Status:
Active
Special Sale Conditions:
Listed As Is
Listing Category:
Residential
Property Type:
Single Family House
MLS Number:
A11924175
Description of Last Important Update:
Price Change
Last Major Update on:
March 20, 2026 4:55 pm
Rooms Distribution
Bedrooms:
4
Bathrooms Total:
5
Full Bath:
4
Half Bath:
1
Measures
Living Area:
4,290 Sqft
Built-Up Area:
6,219 Sqft
Lot Area:
15,184 Sqft
Lot Size Unit:
Square Feet
Lot Features:
Quarter To Half Acre Lot
Property Features
View from the Property:
Water, Canal
Waterfront:
Yes
Waterfront Features:
Canal Front
Frontage Length:
0
Swimming Pool Features:
Pool, In Ground
Appliances:
Dryer, Dishwasher, Disposal, Microwave, Trash Compactor, Gas Range, Electric Water Heater
Interior:
First Floor Entry, Bedroom On Main Level
Exterior:
Deck
Patio and Porch:
Deck
Air Conditioning
Air Conditioning System:
Central Air
Heating
Heating System:
Central
Property Entrance Faces:
North
Water Access Description:
None
Construction
Year Built:
1960
Year Built Details:
Resale
Roof:
Aluminum
Architectural Style:
Detached, One Story
Construction Materials:
Block, Brick
Flooring:
Wood, Other, Hardwood
Stories:
1
Taxes and Expenses
Tax Annual Amount:
$112,793.00
Tax Year:
2025
Property Tax Status:
Tax Reflects No Exemptions
Parking
Garage
Garage Spaces:
2
Covered Spaces:
2
Parking Features:
Other
Utilities
Sewer:
Septic Tank
Water Source:
Public
Community
Subdivision Name:
MASHTA ISLAND A REPLAT OF
Senior Community:
No
Restrictions:
See Remarks
Terms
Listing Terms Considered by Seller:
Cash, Conventional, FHA, VA Loan
Occupant Type:
Call Agent
Buyer Possession:
Close Of Escrow
Zoning and Legal
Tax Legal Description:
MASHTA ISLAND A REPLAT OF TRS A B & C PB 65-65 LOT 11 BLK 1 LOT SIZE 104.000 X 146 OR 15577-14 0982 1 COC 22096-0549 03 2004 1
Real Estate Folio Number (Parcel Number):
24-52-05-009-0040
Zoning Description:
2001
Public Schools Assigned
Elementary School:
Collins
High School:
Coral Gables
Middle Or Junior School:
Ponce De Leon
Listing History
Originally published on:
December 3, 2025 10:42 pm
Active on the market since:
November 26, 2025
Price change occurred on:
March 20, 2026 4:55 pm
Listing Status Last Changed On:
January 15, 2026 11:35 am
Photos updated on:
January 21, 2026 3:18 am
Last Modified:
March 20, 2026 8:56 pm
Additional Information
Housing Older Persons Act:
No HOPA
Flood Zone:
AE
Type of Association:
None
Rooms Description:
No Additional Rooms
Style:
WF/Pool/Ocean Access
Municipal Code:
24
Subdivision Number:
9
Courtesy of:
EXP Realty LLC
Attribution:
Not provided
Location
Street Name:
Mashta Dr
Street Number:
591
City:
Key Biscayne
State:
Florida
Zip Code:
33149
County:
Miami-Dade
Latitude:
N25° 41' 6.6''
Longitude:
W81° 49' 37''
Street Direction Prefix:
N
Property Map

Neighborhood Stats

Source: U.S. Census Bureau, ACS 5-Year Estimates

Median Household Income $171,982
Median Home Value $1,231,500
Median Rent $3,501/mo
Median Age 43
Population 14,628

Air Quality

Source: AirNow.gov · Miami

🌬️ Air Quality Index (AQI) 50 Good
☀️ O3 50 Good
🫁 PM2.5 50 Good

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Association of REALTORS®
Disclaimer: IDX listing information is presented by Rebonus Brokerage LLC for consumer informational purposes only. The information provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed by the MLS or the real estate broker. This page presents structured listing information sourced directly from the MLS via the RESO Web API feed. Rebonus prioritizes maximum field coverage and data completeness, displaying the most granular MLS-provided attributes available.