Listing by Coldwell Banker RealtyMLS® #A12104430
SOLD
This home is no longer available (as of August 3, 2026). The details below are historical. See available homes in Key Biscayne →
4
Beds
4.5
Baths
4,290
SQUARE FEET
Single Family Residence
Type
1960
Built
Listing courtesy of
EXP Realty LLC
Cristina D Anglemont De Tassigny
MLS® #A11924175
Listing information last updated August 5, 2026
MiamiCityRealty.com is an agent's best friend. We proudly co-broke and partner with EXP Realty LLC — and every agent and broker in Miami — to get the deal done.
Overview
This single family residence in Key Biscayne has 4 bedrooms and 4.5 bathrooms across 4,290 square feet, and was most recently listed at $15,500,000. Built in 1960.
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.
Listing history
Price reduced
↓ $1,450,000 from $16,950,000 · Mar 20, 2026 · MIAMI MLS
$15,500,000
Listed for sale
Nov 26, 2025 · MIAMI MLS
$16,950,000
Days on market
as of today
330 days
Building & financials
FROM MIAMI MLSThe carrying-cost and structural facts that close or kill a Miami deal — straight from the listing feed.
Annual property tax (2025)
$112,793
Association type
None
Waterfront
Ocean Access, Canal Front
Dues, taxes, and association data per MIAMI MLS and public records; flood zone from FEMA NFHL. Verify with the HOA, county, and your insurer during due diligence.
Property details
MLS #A11924175
Price$15,500,000
Size4,290 Square Feet
Bedrooms4
Bathrooms4.5
Garage2
Year built1960
TypeSingle Family Residence
StatusFor Sale
Price / Square Feet$3,613
Features & amenities
Dishwasher
Disposal
Dryer
Electric Water Heater
First Floor Entry
Gas Range
Has a View
Has Cooling System
Has Garage
Has Heating System
Has Waterfront
Microwave
No Additional Rooms
Trash Compactor
Location
591 N Mashta Dr, Key Biscayne FL 33149
Questions, answered
Ask about this home
Questions on price, building, or financing? Send a note — we reply fast.
More like this
Other homes near Key Biscayne
Listing by Lifestyle International RealtyMLS® #A12107414
$4,950,000
24 Grand Bay Estates Circle, Key Biscayne FL 33149 – Residential
Grand Bay Estates
- 5 beds
- 5.5 baths
- 4,220 sqft
Listing by Engel & Voelkers Vero BeachMLS® #B26004621
$7,490,000
571 Glenridge Rd, Key Biscayne FL 33149 – Residential
Glenridge Rd
- 5 beds
- 6 baths
- 3,768 sqft
Listing by Luxe Living RealtyMLS® #A12025834
$5,100,000
797 Glenridge Rd, Key Biscayne FL 33149 – Residential
Glenridge Rd
- 5 beds
- 4.5 baths
- 3,535 sqft
Listing by Swann Realty Partners, LLC.MLS® #A12037837
Listing by Brickell Realty Group, LLCMLS® #A12014031
Thinking of selling?
Own a home in Key Biscayne?
Get a no-obligation MCR estimate and see how your block has trended this year.
What's my home worth →Own a rental?
List, screen, and lease with MCR.
Applicant screening, leases, and rent collection — managed end to end by a Miami brokerage.
List your rental →Sold as of August 3, 2026. This listing is no longer active on MIAMI MLS; all information shown is historical and was accurate as of its last update. It is retained for reference and is not an offer or solicitation. Contact MiamiCityRealty.com for current availability.
Listing data © MIAMI MLS · IDX information deemed reliable but not guaranteed · 330 days on market.
We do not advertise a “free” buyer’s agent; buyer-representation compensation is disclosed in writing. Bitcoin pricing is indicative and updates with the market — not financial, tax, or legal advice. Buyer to independently verify all measurements, assessments, and flood & insurance facts.