Home in 1080 Mariner Drive, Key Biscayne, FL 33149 for sale with MLS# A12117649

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.

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1080 Mariner Drive, Key Biscayne, FL 33149

Price
Price:
$19,750,000.00
Original List Price:
$19,750,000.00
List Price per Sq Ft (Calculated, Approx.):
$3,053.49
Property Status and Type
Listing Type:
For Sale
Status:
Active
Listing Category:
Residential
Property Type:
Single Family House
Description of Last Important Update:
New Listing
Last Major Update on:
November 4, 2026 5:00 am
Other Special Conditions:
Sold As-is
Rooms Distribution
Bedrooms:
6
Bathrooms Total:
7
Full Bath:
6
Half Bath:
1
Room Type:
Family Room
Master Bedroom Bath:
Master Bdrm - Upstairs, Master Bdrm - Ground
Measures
Living Area:
6,468 Sqft
Built-Up Area:
8,699 Sqft
Lot Area:
12,900 Sqft
Lot Size Acres:
0.3
Property Features
View from the Property:
Pool, Canal
Waterfront:
Yes
Waterfront Features:
Other
Frontage Length:
0
Private Pool
Swimming Pool Features:
Other
Furnished:
Unfurnished
Appliances:
Dryer, Dishwasher, Disposal, Microwave, Washer, Oven
Interior:
Kitchen Island
Exterior:
Barbecue
Air Conditioning
Air Conditioning System:
Central Air, Electric
Heating
Heating System:
Central, Electric
Boat and Dock Features:
Private Dock
Property Entrance Faces:
South
Storm Protection Impact Glass:
Partial
Construction
Year Built:
2018
Roof:
Aluminum
Levels:
Two
Entry Level (floor):
1
Construction Materials:
CBS
Flooring:
Tile
Number of stories:
2
Flood Zone Code:
AE
Property Condition:
Resale
Taxes and Expenses
Tax Annual Amount:
$138,676.00
Tax Year:
2025
Property Tax Details:
Tax Reflects No Exemptions
Parking
Garage
Garage Spaces:
2
Covered Spaces:
2
Parking Features:
Driveway, Paver Block
Utilities
Sewer:
Public Sewer
Water Source:
Public
Community
Amenities Provided by the Homeowner's Association (HOA):
Other
Subdivision Name:
CAPE FLA SUB SEC 2
Senior Community:
Yes
Restrictions:
No Restrictions
Community Dock
Terms
Listing Terms Considered by Seller:
Cash, Conventional
Buyer Possession:
Negotiable
Zoning and Legal
Tax Legal Description:
5 55 42 CAPE FLA SUB SEC 2 PB 70-67 LOT 9 BLK 6 & PROP INT IN & TO WATERWAY LOT SIZE 100.000 X 129 OR 18730-1581 0699 4
Real Estate Folio Number (Parcel Number):
2452050110160
Zoning:
2000
Public Schools Assigned
Elementary School:
Ridgewood Park Elem
High School:
Coral Gables
Middle Or Junior School:
Ponce De Leon
Listing History
Active on the market since:
November 3, 2026
Listing Agreement executed on:
November 4, 2026
Listing Status Last Changed On:
November 4, 2026 5:00 am
Photos updated on:
November 4, 2026 7:52 pm
Last Modified:
November 5, 2026 12:02 am
Additional Information
Courtesy of:
One Sotheby's International Realty
Attribution:
Not provided
Location
Street Name:
Mariner
Street Number:
1080
City:
Key Biscayne
State:
Florida
Zip Code:
33149
County:
Miami-Dade
Latitude:
N25° 40' 58.9''
Longitude:
W81° 50' 0.8''
Street Suffix:
Drive
Property Map

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Neighborhood Stats

Source: U.S. Census Bureau, ACS 5-Year Estimates

Median Household Income $171,982
Median Home Value $1,231,500
Median Rent $3,501/mo
Median Age 43
Population 14,628
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Association of REALTORS®
Disclaimer: IDX listing information is presented by Rebonus Brokerage LLC for consumer informational purposes only. The information provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Data is deemed reliable but is not guaranteed by the MLS or the real estate broker. This page presents structured listing information sourced directly from the MLS via the RESO Web API feed. Rebonus prioritizes maximum field coverage and data completeness, displaying the most granular MLS-provided attributes available.