Spanning over 6,200 sq. ft. with 6 bedrooms and 6.5 baths, the home sits at the end of a private cul-de-sac with sweeping water and mangrove views. A dramatic entry opens to light-filled living spaces with floor-to-ceiling glass, wide-plank European oak floors, and custom millwork throughout. The sleek chef’s kitchen features Italian cabinetry, a marble waterfall island, and top-of-the-line Miele and Sub-Zero appliances. The primary suite offers a private sitting area, expansive custom closets, and a spa-style bathroom with book-matched marble, freestanding soaking tub, dual vanities, and glass-enclosed rain shower. Secondary suites are equally refined, each with bespoke finishes and private baths. Seamlessly connecting indoors and outdoors, the residence showcases covered terraces with natural stone flooring, a summer kitchen with custom cabinetry and Wolf appliances, and a resort-style pool surrounded by tropical gardens curated by CCLA. A private dock with direct Biscayne Bay access completes the waterfront lifestyle. Located within one of Miami’s most coveted island communities, this estate blends modern craftsmanship with timeless design, just minutes from pristine beaches, parks, dining, and top-rated schools.
Listing Provided Courtesy of One Sotheby’s International Realty at 305-666-0562
Property Details
Price:
$19,750,000
MLS #:
A12117649
Status:
Active
Beds:
6
Baths:
6.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
CAPE FLA SUB SEC 2
Neighborhood:
2520
Listed Date:
Nov 3, 2026
Finished Sq Ft:
6,468
Total Sq Ft:
8,699
Lot Size:
561,924,000 sqft / 0.30 acres (approx)
Year Built:
2018
See this Listing
Schools
Elementary School:
Key Biscayne K-8
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Dishwasher, Disposal, Dryer, Microwave, Oven, Washer
Bathrooms
6 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air, Electric
Flooring
Tile
Heating
Central, Electric
Interior Features
Kitchen Island
Levels
Two
Exterior
Association Amenities
Other
Community
55+
Construction Materials
CBS
Covered Spaces
2
Direction Faces
South
Exterior Features
Barbecue
Garage Spaces
2
Parking Features
Driveway, Paver Block
Roof
Aluminum
Senior Community YN
1
View
Canal, Pool
Waterfront Features
Other
Financial
Tax Year
2025
Taxes
$138,676
Map
Community
- Address1080 Mariner Drive Key Biscayne FL
- SubdivisionCAPE FLA SUB SEC 2
- CityKey Biscayne
- CountyMiami-Dade
- Zip Code33149
Subdivisions in Key Biscayne
- 155 SUNRISE CONDO
- 32 54 42 & 5 55 42
- 325 FERNWOOD ROAD CONDO
- 544-548 FERNWOOD CONDO
- 596 Fernwood
- BAHAMA HOUSE SOUTH CONDO
- BAHIA MAR CONDO OF KEY BI
- BISCAYNE KEY ESTATES
- BISCAYNE KEY ESTATES SUB
- BLUE PELICAN CONDO
- CAPE FLA CLUB CONDO CLUST
- CAPE FLA SUB SEC 2
- CAPE FLORIDA CLUB CONDO
- CAPE FLORIDA CLUB CONDO P
- CAPE FLORIDA SUB SEC 1
- CAPE FLORIDA SUB SEC 3
- CASA DEL MAR CONDO
- CAY POLYNESIA CONDO
- CLUB TOWER ONE CONDO
- CLUB TOWER THREE CONDO
- CLUB TOWER TWO CONDO
- Commodore Club East
- COMMODORE CLUB SOUTH COND
- COMMODORE CLUB WEST CONDO
- CRANDON TOWER CONDO
- G B RESORT CONDO HOTEL
- G B VILLAS
- GALEN BREAKERS CONDO
- GALEN BREAKERS CONDOMINIU
- GALEN DRIVE CONDO APTS
- GALEN DRIVE WEST CONDOMINIUM
- GARDENS OF KEY BISCAYNE
- GDNS OF KEY BISC-ALHAMBRA
- GOVERNORS LODGE ASSOC CON
- GRAND BAY RESIDENCES COND
- GRAND BAY TOWER CONDO
- GRAND KEY ESTATES
- GRAPETREE TOWNHOUSE CONDO
- HOLIDAY COLONY
- HURRICANE COVE
- INDIES CONDO
- ISLAND BREAKERS CONDO
- ISLAND HOUSE
- ISLAND HOUSE APT INC – CO
- KEY BISC AMBASSADOR CONDO
- Key Biscayne
- KEY BISCAYNE COMMODORE CL
- KEY BISCAYNE COMMODORE CLUB
- KEY BISCAYNE VI CONDO
- KEY BISCAYNES COMMODORE C
- KEY COLONY
- KEY COLONY NO 1
- KEY COLONY NO 2 CONDO
- KEY COLONY NO 4 CONDO
- KEY ISLANDER CONDO
- Key Islander Condominium
- LAKE TOWER CONDO
- LAKE VILLA ONE CONDO
- LAKE VILLA THREE CONDO
- LAKE VILLA TWO CONDO
- LE PHARE KEY BISCAYNE CON
- MAR-AZUL CONDO
- MASHTA ISLAND
- MASHTA ISLAND A REPLAT OF
- MASHTA POINT SUB
- MATHESON ESTATES
- OCEAN LANE PLAZA CONDO
- OCEAN TOWER ONE CONDO
- OCEAN TOWER TWO CONDO
- OCEAN VILLAGE CONDO
- OCEANA KEY BISCAYNE CONDO
- RESORT VILLA ONE CONDO
- RESORT VILLA TWO CONDO
- SANDS OF KEY BISCAYNE CON
- SMUGGLERS COVE
- SOLIMAR CONDO OF KEY BISC
- SUNRISE CLUB CONDO
- SUNRISE MANOR CONDO
- THE EMERALD BAY
- THE EMERALDBAY @ KEY COLO
- THE PALMS OF KEY BISCAYNE
- THE PYRAMIDS @ KEY BISCAY
- TOWERS OF KEY BISCAYNE CO
- TROPICAL ISLE HOMES RESUB
- TROPICAL ISLE HOMES SUB
- TROPICAL ISLE HOMES SUB 1
- TROPICAL ISLE HOMES SUB 2N
- TROPICAL ISLE HOMES SUB 3
- TROPICAL ISLE HOMES SUB 4
- TROPICAL ISLES HOMES
Market Summary
Current real estate data for Single Family in Key Biscayne as of Nov 09, 2026
44
Single Family Listed
147
Avg DOM
2,747
Avg $ / SqFt
$14,626,386
Avg List Price
Property Summary
- Located in the CAPE FLA SUB SEC 2 subdivision, 1080 Mariner Drive Key Biscayne FL is a Single Family for sale in Key Biscayne, FL, 33149. It is listed for $19,750,000 and features 6 beds, 7 baths, and has approximately 6,468 square feet of living space, and was originally constructed in 2018. The current price per square foot is $3,053. The average price per square foot for Single Family listings in Key Biscayne is $2,747. The average listing price for Single Family in Key Biscayne is $14,626,386.
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