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1080 Mariner Drive, Key Biscayne, FL 33149

New Listing
$19,750,000
Property Type: Residential Bedrooms: 6 Baths: 7 Square Footage: 8,699 Status: Active
Current Price: $19,750,000 List Date: 11/04/2026 Last Modified: 11/05/2026

Description

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.

More Information MLS# A12117649

Contract Information

Comp Sale YN: No Occupant Type: Owner Listing Date: 2026-11-04 Status: Active Original List Price: 19750000 List Price: $19,750,000 Current Price: $19,750,000

Location and Legal

County Or Parish: Miami-Dade County Parish Name: Miami-Dade City Name: Key Biscayne Municipal Code: 24 Postal Zip: 33149 Subdivision Number: 11 Flood Zone: AE Country: United States Street Number: 1080 Street Name: Mariner Street Suffix: Drive State Or Province: FL Postal Code: 33149 Postal Code +4: 2474 Subdivision Name: CAPE FLA SUB SEC 2 Area: 2520 Elementary School: Key Biscayne K-8 Middle Or Junior School: Ponce De Leon High School: Coral Gables Parcel Number: 2452050110160 Zoning: 2000

General Property Information

Adjusted Area Main: 6871 Living Area Main: 6468 Lot Size Area: 12900 Water Frontage Feet: 0 Senior Community YN: Yes Furnished: Unfurnished Stories Total: 2 Pool Private YN: Yes Property Sub Type: Single Family Residence Bedrooms Total: 6 Bathrooms Total: 7 Bathrooms Full: 6 Bathrooms Half: 1 Building Area Main: 8699 Year Built: 2018 Garage YN: 1 Garage Spaces: 2 Covered Spaces: 2 Lot Size Acres: 0.3 Waterfront YN: 1 Direction Faces: South

Financial Information

Estimated Monthly Assoc Recurring Fee: 0 Membership Fee Required YN: No Tax Annual Amount: 138676 Tax Year: 2025 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

Office/Member Information

DXORIGMLSID: SEF

Amenities

Other: 1

Entry Information

Entry Level: 1

Exterior Features

Barbecue: 1

Flooring

Tile: 1

Parking Features

Driveway: 1 Paver Block: 1

Property Condition

Resale: 1

Possession

Negotiable: 1

Sewer

Public Sewer: 1

Special Information

Sold As-Is: 1

View

Pool: 1

Heating

Central: 1 Electric: 1

Water Access

Other: 1

Water View

Canal: 1

Appliances

Dishwasher: 1 Disposal: 1 Dryer: 1 Microwave: 1 Oven: 1 Washer: 1

Construction Materials

CBS: 1

Interior Features

Kitchen Island: 1

Levels

Two: 1

Listing Terms

Cash: 1 Conventional: 1

Pool Features

Other: 1

Roof

Aluminum: 1

Water Source

Public: 1

Boat and Dock Information

Dock: Yes

Boat and Dock Features

Private Dock: 1

Cooling

Central Air: 1 Electric: 1

Showing Requirements

Call Listing Agent: 1

Master Bedroom/Bath

Master Bdrm - Ground: 1 Master Bdrm - Upstairs: 1

Pool Size Details

Pool Size (WxL): 0

Restrictions

No Restrictions: 1

Storm Protection

Impact Glass: Partial

Tax Information

Tax Reflects No Exemptions: 1

Room Types

Family Room: 1

Price Calculations

Current Price To SqFt: 3053.49

Section Details

Parcel Number MLX: 0160

Acreage Description

1/4 To Less Than 1/2 Acre Lot: 1

Status Change Information

Major Change Timestamp: 2026-11-04T05:00:00Z Major Change Type: New Listing Status Change Date: 2026-11-04

Originating Details

Originating System Key: 569699198 Originating System ID: M00000151

Property Features

Exterior Features: Barbecue Flooring: Tile Parking Features: Driveway; Paver Block Property Condition: Resale Appliances: Dishwasher; Disposal; Dryer; Microwave; Oven; Washer Boat and Dock Features: Private Dock Construction Materials: CBS Cooling: Central Air; Electric Heating: Central; Electric Interior Features: Kitchen Island Levels: Two Listing Terms: Cash; Conventional Pool Features: Other Possession: Negotiable Restrictions: No Restrictions Roof: Aluminum Sewer: Public Sewer Special Information: Sold As-Is Tax Information: Tax Reflects No Exemptions View: Pool Water Access: Other Water Source: Public Water View: Canal Showing Requirements: Call Listing Agent Room Types: Family Room Acreage Description: 1/4 To Less Than 1/2 Acre Lot

Room Information

Family Room
Listing Office: One Sotheby's International Realty
Last Updated: November - 05 - 2026
1080 Mariner Drive, Key Biscayne, FL 33149- MLS# A12117649
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