3 photos$19,450,000list price
Per sq ft$2,994
7 bd · 7.5 ba · 6,497 sq ft House
550 HARBOR DR #33149, KEY BISCAYNE, FL 33149
Listing courtesy of Three Bridges Realty, LLC. MLS# A12111835.On the MLS · Listed Oct 21
$19,750,000
1080 MARINER DR #33149, KEY BISCAYNE, FL 33149
6 beds6.5 baths6,468 sq ftHouseBuilt 2018
Updated today, November 6, 2026This home against Key Biscayne
$3,053 per sq ft, 157% over the Key Biscayne median
4 days on the market
$138,676 in property taxes (2025)
13,068 sq ft lot
Private pool
Waterfront
2 car garage
Key Biscayne today: 132 homes for sale, median list price $2,632,500.
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.
Zoned schools
Elementary: Key Biscayne K-8 Center
Middle: Ponce de Leon Middle School
High: Coral Gables Senior High School
From Miami-Dade County Public Schools attendance zones.
Listing courtesy of One Sotheby's International Realty. MLS# A12117649.
Listing information is provided by the MLS and is deemed reliable but not guaranteed.
Listed November 2, 2026.
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