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Case files · 7 November 2026
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Josh Stein, Miami real estate associateJosh Stein

House · Key Biscayne

$19,750,000

1080 Mariner Drive, Key Biscayne, FL

  • Beds6
  • Baths6.5
  • Sq ft6,468
  • Price per sq ft$3,053
  • TypeHouse
  • StatusFor sale
Listing courtesy of One Sotheby's International Realty

About this home

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.

Area
Key Biscayne
MLS #
A12117649
Living area (m²)
601 m²
Price per m²
$32,862
Property tax (per year)
$138,676 (2025)
Year built
2018
Floors in the building
2
Parking
Garage: 2
Furnished
Unfurnished
Waterfront
Yes
Private pool
Yes
Flooring
Tile
View
Canal, Pool
Listed
November 3, 2026
Days on market
4

Interior features

  • Kitchen Island
  • Main Level Primary
  • Upper Level Primary

Exterior features

  • Barbecue

Parking features

  • Driveway
  • Paver Block

Appliances

  • Dryer
  • Dishwasher
  • Disposal
  • Microwave
  • Oven
  • Washer

Location

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Similar homes in Key Biscayne

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Recently sold nearby

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Listing information is deemed reliable but is not guaranteed and is provided exclusively for consumers' personal, non-commercial use. Data is supplied by the MLS and may be subject to change or withdrawal without notice.

Last updated November 5, 2026, 6:27 pm

Planted by IDX Bloom

$19,750,000 Ask about this home
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+1 (305) 695-8257 · hello@joshsteinrealtor.comPhone or WhatsApp · English / Español · Licensed in Florida since 2002

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