1080 Mariner Drive
Key Biscayne, FL, 33149
$19,750,000
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.
Current real estate data for Single Family in Key Biscayne as of Nov 06, 2026
43
Single Family Listed
145
Avg DOM
2,753
Avg $ / SqFt
$14,519,209
Avg List Price
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 4, 2026
Finished Sq Ft:
6,468
Total Sq Ft:
8,699
Lot Size:
561,924,000 sqft / 0.30 acres (approx)
Year Built:
2018
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
Contact Us
Mortgage Calculator
Community
- Address1080 Mariner Drive Key Biscayne FL
- SubdivisionCAPE FLA SUB SEC 2
- CityKey Biscayne
- CountyMiami-Dade
- Zip Code33149
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 $2,753. The average listing price for Single Family in Key Biscayne is $14,519,209. To schedule a showing of MLS#a12117649 at 1080 Mariner Drive in Key Biscayne, FL, contact your Trust House Realty agent at 9543362003.
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