6
Beds
5.5
Baths
4,341
SQUARE FEET
Single Family Residence
Type
2025
Built
Listing courtesy of
Coldwell Banker Realty
Judith Zeder
MLS® #A12104430
Listing information last updated October 20, 2026
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Overview
This single family residence in Key Biscayne has 6 bedrooms and 5.5 bathrooms across 4,341 square feet, and is listed for sale at $9,950,000 (about $2,292 per square foot). Built in 2025.
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.
Listing history
Listed for sale
Oct 19, 2026 · MIAMI MLS
$9,950,000
Days on market
as of today
2 days
Building & financials
FROM MIAMI MLSThe carrying-cost and structural facts that close or kill a Miami deal — straight from the listing feed.
Annual property tax (2025)
$31,314
Association type
None
Pets
Allowed (verify restrictions)
Dues, taxes, and association data per MIAMI MLS and public records; flood zone from FEMA NFHL. Verify with the HOA, county, and your insurer during due diligence.
Property details
Features & amenities
Location
360 Harbor Ln, Key Biscayne FL 33149
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Est. monthly payment
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List your rental →Listing data © MIAMI MLS · IDX information deemed reliable but not guaranteed · 2 days on market.
We do not advertise a “free” buyer’s agent; buyer-representation compensation is disclosed in writing. Bitcoin pricing is indicative and updates with the market — not financial, tax, or legal advice. Buyer to independently verify all measurements, assessments, and flood & insurance facts.