$15,500,000
591 N Mashta Dr
Key Biscayne, FL, 33149
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.
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.
Property Details
Price:
$15,500,000
MLS #:
A11924175
Status:
Active
Beds:
4
Baths:
4.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
MASHTA ISLAND A REPLAT OF
Neighborhood:
mashtaislandareplatof
Listed Date:
Nov 26, 2025
Finished Sq Ft:
4,290
Total Sq Ft:
6,219
Year Built:
1960
Schools
Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Trash Compactor, Dishwasher, Disposal, Dryer, Electric Water Heater, Microwave, Gas Range
Bathrooms
4 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Other, Wood
Heating
Central
Interior Features
First Floor Entry, No Additional Rooms
Exterior
Architectural Style
Detached, One Story
Community Features
None
Construction Materials
Concrete Block With Brick
Covered Spaces
2
Direction Faces
North
Garage Spaces
2
Lot Features
1/4 To Less Than 1/2 Acre Lot
Parking Features
Other
Patio And Porch Features
Deck
Roof
Aluminum
View
Canal, Water
Waterfront Features
Ocean Access, Canal Front
Financial
Tax Year
2025
Taxes
$112,793
Mortgage Calculator
Map
Current real estate data for Single Family in Key Biscayne as of Apr 14, 2026
57
Single Family Listed
195
Avg DOM
2,147
Avg $ / SqFt
$8,927,140
Avg List Price
Community
- Address591 N Mashta Dr Key Biscayne FL
- SubdivisionMASHTA ISLAND A REPLAT OF
- CityKey Biscayne
- CountyMiami-Dade County
- Zip Code33149
Subdivisions in Key Biscayne
- 155 SUNRISE CONDO
- 544-548 FERNWOOD CONDO
- BAHAMA HOUSE CONDO,Bahama House
- BAHAMA HOUSE SOUTH CONDO
- BAHIA MAR CONDO OF KEY BI
- BISCAYNE KEY ESTATES
- BLUE PELICAN CONDO
- CAPE FLA CLUB CONDO CLUST
- CAPE FLA SUB SEC 2
- CAPE FLORIDA CLIB CONDO P
- CAPE FLORIDA CLUB CONDO P
- CAPE FLORIDA CLUB CONDO P,CAPE FLORIDA CLUB
- CAPE FLORIDA CLUB CONDO P,CAPE FLORIDA CLUB CO
- CAPE FLORIDA SUB SEC 1
- CAPE FLORIDA SUB SEC 1,CAPE FLORIDA SUB
- CAPE FLORIDA SUB SEC 3
- CAPE FLORIDA SUB SEC 3,Village Estate
- CASA DEL MAR
- CASA DEL MAR CONDO
- CASA DEL MAR CONDO,CASA DEL MAR
- CAY POLYNESIA CONDO
- CLUB TOWER ONE CONDO
- CLUB TOWER ONE CONDO,Ocean Club
- CLUB TOWER ONE CONDO,THE OCEAN CLUB
- CLUB TOWER THREE CONDO
- CLUB TOWER TWO CONDO
- CLUB TOWER TWO CONDO,Ocean Club
- CLUB TOWER TWO CONDO,THE OCEAN CLUB
- COMMODORE CLUB SOUTH COND
- COMMODORE CLUB SOUTH COND,COMMODORE CLUB SOUTH
- COMMODORE CLUB WEST CONDO
- COMMODORE CLUB WEST CONDO,COMMODORE CLUB
- CRANDON TOWER CONDO
- G B VILLAS
- GALEN 250 CONDO
- GALEN BREAKERS CONDOMINIU
- GALEN BREAKERS CONDOMINIU,GALEN BREAKERS CONDO
- Galen Drive Condo Apt
- GALEN DRIVE CONDO APTS
- GOVERNORS LODGE ASSOC CON
- GRAND BAY RESIDENCES COND
- GRAND BAY RESIDENCES COND,GRAND BAY
- GRAND BAY TOWER CONDO
- GRAND BAY TOWER CONDO,GRAND BAY TOWER COND
- GRAPETREE TOWNHOUSE CONDO
- HOLIDAY COLONY
- HURRICANE COVE
- INDIES CONDO
- ISLAND HOUSE
- ISLAND HOUSE APT INC – CO
- ISLAND HOUSE APT INC – CO,Island House Apt Inc
- KEY BISC AMBASSADOR CONDO
- KEY BISC AMBASSADOR CONDO,KEY BISC AMBASSADOR
- KEY BISC COMMODORE CLUB,COMMODORE CLUB
- Key Biscayne Ambassador,KB Ambassador
- KEY BISCAYNE COMMODORE CL
- KEY BISCAYNE COMMODORE CL,COMMODORE CLUB ONE
- KEY BISCAYNE COMMODORE CL,Commodore East
- KEY BISCAYNE COMMODORE CL,KEY BISCAYNE COMMODO
- KEY BISCAYNE ONE HUNDRED
- KEY BISCAYNE VI CONDO
- KEY BISCAYNE VI CONDO,BRICKELL KEY VI COND
- KEY BISCAYNE VI CONDO,KEY BISCAYNE VICONDO
- KEY BISCAYNES COMMODORE C
- KEY BISCAYNES COMMODORE C,KEY BISCAYNES COMMOD
- KEY CASSA CONDO
- KEY CASSA CONDOMINIUMS
- KEY COLONY 2-OCEAN SOUND,KEY COLONY 2-OCEAN S
- KEY COLONY CONDO #4
- KEY COLONY CONDO #4,KEY COLONY CONDO 4
- Key Colony Condo 02
- KEY COLONY NO 1
- KEY COLONY NO 1,KEY COLONOY 1
- KEY COLONY NO 1,Key Colony
- KEY COLONY NO 2 CONDO
- KEY COLONY NO 2 CONDO,KEY COLONY NO 2 COND
- KEY COLONY NO 4 CONDO
- KEY COLONY NO 4 CONDO,BOTANICA/FERNERY
- KEY COLONY NO 4 CONDO,KEY COLONY
- KEY COLONY NO 4 CONDO,KEY COLONY NO 4 COND
- KEY ISLANDER CONDO
- Key Islander Condominium,Key Islander Condomi
- KEY TOWNHOUSE CONDO
- LAKE TOWER CONDO
- LAKE TOWER CONDO,Lake Tower
- LAKE TOWER CONDO,THE OCEAN CLUB
- LAKE VILLA THREE CONDO
- LAKE VILLA THREE CONDO,LAKE VILLA THREE CON
- LAKE VILLA TWO CONDO
- Le Phare Condo,Le phare
- LE PHARE KEY BISCAYNE CON
- Mar Azul,Mar Azul Condo
- MAR-AZUL CONDO
- MAR-AZUL CONDO,Mar Azul
- MASHTA ISLAND
- MASHTA ISLAND A REPLAT OF
- MATHESON ESTATES
- MATHESON ESTATES,MATHESON STATES
- OCEAN LANE PLAZA CONDO
- OCEAN TOWER ONE CONDO
- OCEAN TOWER TWO CONDO
- OCEAN TOWER TWO CONDO,Ocean Club
- OCEAN TOWER TWO CONDO,OCEAN TOWER TWO COND
- OCEAN TOWER TWO CONDO,THE OCEAN CLUB
- OCEAN VILLAGE CONDO
- OCEAN VILLAGE CONDO,Ocean Village Condo
- OCEANA KEY BISCAYNE CONDO
- OCEANA KEY BISCAYNE CONDO,OCEANA
- OCEANA KEY BISCAYNE CONDO,OCEANA KEY BISCAYNE
- OCEANSOUND
- OCEANSOUND,KEY COLONY NO 2 COND
- RESORT VILLA ONE CONDO
- RESORT VILLA ONE CONDO,RESORT VILLA ONE CON
- RESORT VILLA TWO CONDO
- RESORT VILLA TWO CONDO,RESORT VILLA TWO CON
- RESORT VILLA TWO CONDO,The Ocean Club
- SANDS OF KEY BISCAYNE CON
- SMUGGLERS COVE
- SOLIMAR CONDO OF KEY BISC
- SUNRISE CLUB CONDO
- SUNRISE CLUB CONDO,100 SUNRISE
- SUNRISE MANOR CONDO
- THE EMERALD BAY
- THE EMERALDBAY @ KEY COLO
- THE EMERALDBAY @ KEY COLO,KEY COLONY
- THE EMERALDBAY @ KEY COLO,THE EMERALD BAY
- THE EMERALDBAY @ KEY COLO,THE EMERALDBAY @ KEY
- THE EMERALDBAY @ KEY COLON
- THE EMERALDBAY KEY COLONY
- THE EMERALDBAY KEY COLONY,THE EMERALDBAY
- The Ocean Club
- THE PALMS OF KEY BISCAYNE
- THE PYRAMIDS @ KEY BISCAY
- TIDEMARK KEY COLONY NO 1,Key Colony
- TOWERS OF KEY BISCAYNE CO
- TOWERS OF KEY BISCAYNE CO,The Towers of Key Bi
- TOWERS OF KEY BISCAYNE CO,TOWERS OF KEY BISCAY
- TOWERS OF KEY BISCAYNE CON
- TROPICAL ISLE HOMES SUB
- TROPICAL ISLE HOMES SUB 1
- TROPICAL ISLE HOMES SUB 1,KEY BISCAYNE
- TROPICAL ISLE HOMES SUB 2
- TROPICAL ISLE HOMES SUB 2N
- TROPICAL ISLE HOMES SUB 3
- TROPICAL ISLE HOMES SUB 3,TROPICAL ISLE HOMES
- TROPICAL ISLE HOMES SUB 4
- TROPICAL ISLE HOMES SUB 4,TROPIAL ISLE HOMES
- TROPICAL ISLES HOMES,TROPICAL ISLE HOMES
Similar Listings Nearby
Property Summary
- Located in the MASHTA ISLAND A REPLAT OF subdivision, 591 N Mashta Dr Key Biscayne FL is a Single Family for sale in Key Biscayne, FL, 33149. It is listed for $15,500,000 and features 4 beds, 5 baths, and has approximately 4,290 square feet of living space, and was originally constructed in 1960. The current price per square foot is $3,613. The average price per square foot for Single Family listings in Key Biscayne is $2,147. The average listing price for Single Family in Key Biscayne is $8,927,140.
591 N Mashta Dr
Key Biscayne, FL