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1080 Mariner Dr, Key Biscayne FL 33149

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1080 Mariner Dr1080 Mariner Dr1080 Mariner Dr1080 Mariner Dr
Active · For Sale
$19,750,000
1080 Mariner Dr, Key Biscayne FL 33149
Data via Miami Association of REALTORS® (MiamiRE)
6
Beds
6.5
Baths
6 full + 1 half
6,468
Sq Ft
$3,053
Per Sq Ft
12,900
Lot Sq Ft

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.

MLS #:A12117649
Status:Active
Property Type:Residential · Single Family Residence
Year Built:2018
Living Area:6,468 sq ft
Lot Size:12,900 sq ft
Bathrooms:6.5 (6 full + 1 half; half baths count as ½)
HOA:None
Annual Taxes:$138,676 (2025)
Days on Market (per MLS):0
Waterfront:Yes · Ocean Access
View:Canal, Pool
Parking:2-car garage
Furnished:Unfurnished
Cooling:Central Air, Electric
Construction:CBS Construction
Zoning:2000
Subdivision (per MLS):CAPE FLA SUB SEC 2
City:Key Biscayne
ZIP:33149
County:Miami-Dade
MLS record last modified:November 5, 2026
Map showing the location of 1080 Mariner Dr, Key Biscayne FL 33149
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