1080 Mariner Dr Key Biscayne FL 33149 | MLS #A12117649
1080 Mariner Dr
Key Biscayne, FL, 33149
$19,750,000
6 Beds
6.5 Baths
6,468 SqFt
0 Acres
$19,750,000
1080 Mariner Dr
Key Biscayne, FL, 33149
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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.

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:
capeflasubsec2
Listed Date:
Nov 4, 2026
Finished Sq Ft:
6,468
Total Sq Ft:
8,699
Year Built:
2018
WaterfrontCape Fla Sub Sec 2Capeflasubsec2Cape Fla Sub Sec 2KeybiscaynePonce De LeonCoral GablesNo Restrictions

Schools

Elementary School:
Keybiscayne
Middle School:
Ponce De Leon
High School:
Coral Gables

Interior

Appliances
Dishwasher, Disposal, Dryer, Microwave, Wall Oven, Washer
Bathrooms
6 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air, Electric
Flooring
Tile
Heating
Central, Electric
Interior Features
First Floor Entry, Cooking Island, Family Room

Exterior

Architectural Style
Detached, Two Story
Community Features
Other
Construction Materials
CBS Construction
Covered Spaces
2
Direction Faces
South
Exterior Features
Barbeque
Garage Spaces
2
Lot Features
1/4 To Less Than 1/2 Acre Lot
Open Parking YN
1
Parking Features
Driveway, Paver Block
Roof
Aluminum
View
Canal, Pool
Waterfront Features
Ocean Access

Financial

Tax Year
2025
Taxes
$138,676
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Map

Current real estate data for Single Family in Key Biscayne as of Nov 14, 2026
45
Single Family Listed
157
Avg DOM
2,593
Avg $ / SqFt
$14,297,711
Avg List Price

Community

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Property Summary

    Located in the CAPE FLA SUB SEC 2 subdivision, 1080 Mariner Dr 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 $2,593. The average listing price for Single Family in Key Biscayne is $14,297,711.
1080 Mariner Dr
Key Biscayne, FL