$9,950,000
6 bd · 6 ba · 4,341 sq ft · Single Family Residence
360 Harbor Ln, Key Biscayne FL 33149
For Sale · Active listing
Est. payment $55,113/mo · Mortgage calculator
Listed by Coldwell Banker Realty / Judith Zeder
Contact: 786-822-0989 (listing contact).
Shown through Slice Realty. Requests from this page reach Slice Realty / Propiedad Futura, not the listing agent.
About this home
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.
Facts
- MLS #
- A12104430
- Subdivision
- BISCAYNE KEY ESTATES
- Property type
- Residential
- Property subtype
- Single Family Residence
- Sq. ft.
- 4,341
- Price per sq. ft.
- $2,292 / sq ft
- Year built
- 2025
- Days on market
- 1
- County
- Miami-Dade County
- Date listed
- Oct 19, 2026
- Last updated
- Oct 20, 2026
Financial considerations
- Taxes
- $31,314 (2025)
Exterior features
- Waterfront
- No
- View
- Garden, Pool
- Construction
- Concrete Block Construction, Other
- Roof
- Flat Tile
- Additional features
- Built-In Grill, Lighting, Open Balcony
Interior features
- Furnished
- Unfurnished
- Heating
- Central, Electric
- Cooling
- Central Air, Electric
- Appliances
- Dishwasher, Disposal, Dryer, Electric Range, Microwave, Other Equipment/Appliances, Water Purifier, Refrigerator, Wall Oven, Washer
- Window features
- Clear Impact Glass, Complete Impact Glass, Blinds, High Impact Windows, Impact Glass
- Additional features
- First Floor Entry, Built-in Features, Closet Cabinetry, Entrance Foyer, Other, Volume Ceilings, Walk-In Closet(s), Den/Library/Office, Family Room, Maid/In-Law Quarters, Utility Room/Laundry
Additional features
- Community
- None
Mortgage calculator
Includes principal and interest, taxes and insurance.
Rate: Freddie Mac 30-year average (2026-10-15). Estimate only.
Local context (our analysis)
Area stats are available for our covered neighborhoods. See neighborhoods.
Source: Southeast Florida MLS (SEFMLS). Last updated Oct 20, 2026, 2:33 PM ET
Listing data is deemed reliable but is not guaranteed accurate by the MLS. Information is provided for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.