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BISCAYNE KEY ESTATES · · MLS A12104430
Listed by Coldwell Banker Realty · 305-613-5550
Discreetly set in the heart of Key Biscayne — one of Miami’s most coveted island communities — this elegant modern two-story residence offers 5,156 SF of total space on a lush 9,300 SF lot with 6 bedrooms, 5.5 bathrooms, and a private office, perfectly balancing refined design with the relaxed island lifestyle.
A travertine staircase entry and wrap-around porch with modern glass railings set a sophisticated tone, leading inside to soaring ceilings, herringbone oak floors by Listone Giordano, floor-to-ceiling sliding doors, and Lutron lighting. The open-concept living, dining, and family areas flow seamlessly to the outdoors. The chef’s kitchen showcases a striking fluted marble island with curved-edge countertops, floor-to-ceiling cabinetry by Design It, and a full Wolf and Sub-Zero appliance suite. The primary suite features a private terrace, dual custom walk-in closets, a dry sauna, and a show-stopping bath with aquamarine quartzite sourced from ARCA, dual Waterworks vanities, and a frameless glass shower. Outside, a covered terrace with fluted wood-paneled ceiling, summer kitchen with built-in grill and pizza oven, and a heated saltwater pool with marble deck and Baja ledge create the ultimate island retreat. Professionally designed landscaping and enchanting exterior uplighting illuminate the lush gardens, creating picturesque views through the home’s expansive glass walls, particularly after sunset. Integrated sound and four AC units complete this exceptional offering.
The propertyAs the MLS records it
$56,857 per month
30-year fixed, 7.24% interest
The calculator opens on the national average rate for a 30-year fixed-rate loan: 7.24% for the week of October 29, 2026. Source: Freddie Mac, Primary Mortgage Market Survey ↗
For illustration only: an estimate, not a loan offer or a quote. The tax is the last annual bill the MLS records for this property; in Florida a property is reassessed when it is sold, so a buyer's tax will differ. Insurance is not estimated: it is included only when you enter your own quote. The rate is a national weekly average, not the rate a lender will offer you: change it to the one you are quoted.
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Showings of 360 Harbor Ln, Key Biscayne, FL 33149 are by appointment. Send the request here, call or write on WhatsApp: Julian Acosta, real estate advisor with Compass, answers within one business day to confirm a day and a time.
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| Year | Median price per SF | Closed sales |
|---|---|---|
| 2020 | $803 | 54 |
| 2021 | $964 | 109 |
| 2022 | $1,220 | 60 |
| 2023 | $1,249 | 30 |
| 2024 | $1,321 |
Homes of the same kind on the market nearby, the nearest in price first.
LIVE · MLS · AS OF NOV 1, 2026
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1 / 22The information on this page is supplied by the Southeast Florida Multiple Listing Service of the MIAMI Association of REALTORS®. It is deemed reliable but is not guaranteed accurate by the MLS, and it may have changed since the date above. It is provided for your personal, non-commercial use and may not be used for any purpose other than to identify properties you may be interested in purchasing. This listing is held by Coldwell Banker Realty. Julian Acosta is a real estate advisor with Compass.
A listing shown here may be held by a brokerage other than Compass. To report an error in this listing's information, write to julian.acosta@compass.com.
















16 PHOTOGRAPHS
SOLD · AUG 11, 2026
SOLD · OCT 26, 2026
SOLD · JUN 15, 2026
SOLD · OCT 20, 2026
SOLD · DEC 11, 2025
SOLD · APR 22, 2026| 48 |
| 2025 | $1,404 | 38 |
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| 2026 to date | $1,498 | 37 |
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These figures are the market's closed sales as the MLS records them: this building's for a unit, a gated community's for a home inside one, and otherwise the sales of this kind of property in the home's market — for a home at $2,000,000 or more, only that market's sales from that price up. Which of these it is, is said above the figures. No snapshot is drawn from fewer than 5 sales of the last twelve months, and a median price per SF is stated only from 3 sales that state a living area. They are not sales by Julian Acosta, they are not an appraisal, and they say nothing of this home's price.
These are the public schools whose attendance zone holds this listing's location, as Miami-Dade County publishes the zones. A zone is not a guarantee of enrollment, the district can change it, and a listing's point on the map can sit a few meters from its lot: confirm the school with Miami-Dade County Public Schools before you rely on it. Distances are straight lines. The page states no rating of any school.
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