Atlantic Luxury Advisors
Under contract. Ask us to watch it: if it comes back on the market, you hear first.
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66 photos

550 Harbor Dr

Key Biscayne, FL 33149

$19,450,000
7
7.5
6,497 sq ft
22,975 sq ft
2003
4 car
Single Family Residence
Yes
279
Active Under Contract

Listing courtesy of Three Bridges Realty, LLC (William Earle). Contact: [email protected].

About this home

Situated on the exclusive island of Key Biscayne, this extraordinary 7,000sqft waterfront estate sits on a rare double lot located on Hurricane Harbor overlooking tranquil Manatee Lagoon. The property offers an unparalleled sanctuary of luxury and seclusion with features including a 4 car garage ideal for collectors, professionally landscaped yard well suited for outdoor entertaining, 7 bedrooms and 7.5 baths including live-in staff quarters. Expansive living areas flow seamlessly to large outdoor, covered porches becoming your al fresco living room for outdoor dining or relaxing and soaking in the beauty of the natural environment. As the sun hits the horizon, Sunsets light up the sky illuminating the clouds in a breathtaking array of tropical colors. Text listing agent. 24hr notice

What it costs to own
Estimated monthly payment
$140,413/mo
Principal and interest
$98,350
Property tax
$29,905
Homeowners insurance
$12,158
HOA(not in the listing)
$0

An estimate, not a loan offer. The rate and insurance are assumptions to edit with your own quotes; Florida insurance varies widely by age, construction and distance to the coast. Flood insurance and PMI are not included.

Florida cost of ownership
Estimated property tax
$358,858/yr

Estimate: the price times the Miami-Dade County average total millage (18.49 mills, Florida Department of Revenue, 2025 average total millage by county), less the homestead exemptions. The actual bill depends on the city, the assessed value and special assessments. Save Our Homes then caps annual assessment increases at 3% or inflation, whichever is lower.

HOA
Not stated in the listing; ask us
FEMA flood zone
Zone AE, special flood hazard area

Inside the 1% annual chance floodplain. Lenders require flood insurance on a financed home; ask for the elevation certificate.

Hurricane evacuation zone
Zone A: first to evacuate, ordered for tropical storms and every hurricane category.

Sources: FEMA National Flood Hazard Layer and the Florida Division of Emergency Management evacuation zones, looked up at the listing point. Confirm with an elevation certificate and your insurer.

Location

Listing data provided by the Southeast Florida Multiple Listing Service (MIAMI REALTORS®). The data is deemed reliable but is not guaranteed accurate by the MLS. IDX information is provided exclusively for consumers' personal, non-commercial use, may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and is deemed reliable but is not guaranteed accurate by the MLS. Atlantic Luxury Advisors is a real estate team at Keller Williams Realty. Payment, tax and flood figures on this page are estimates by Atlantic Luxury Advisors, not MLS data.