Palm Beach · Fort Lauderdale · Miami138 towers in the index · Updated weekly

Key Biscayne/360 Harbor Lane

$9,950,000
360 Harbor Lane, Key Biscayne, FL 33149
Key Biscayne, FL 33149
6
Beds
6
Baths
4,341
Sq Ft
$2,292
/ Sq Ft

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.

The facts

Price
$9,950,000
Price / Sq Ft
$2,292
Bedrooms
6
Bathrooms
6
Interior
4,341 sq ft
Type
SingleFamilyResidence
Year Built
2025
Stories
2
Lot Size
0.21 acres
Pool
Yes
Flooring
Marble, Wood
Annual Tax
$31,314
Days on Market
1
MLS #
A12104430

Amenities

  • None
BeachesMLS

Listing courtesy of Coldwell Banker Realty · judy@jillszeder.com. All listings featuring the BMLS logo are provided by BeachesMLS, Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright ©2026 BeachesMLS, Inc.