360 Harbor Ln, Key Biscayne, FL 33149

$9,950,0006 Beds6 Baths4,341 Sq. Ft.$2,292 / sq. ft.

Key Biscayne, FL 33149 · MLS# A12104430 · Active · BISCAYNE KEY ESTATES

Status
Active
Type
Single Family Residence
Year Built
2025
Days on Market
0
Lot Size
9,300 sqft
MLS #
A12104430
County
Miami-Dade County

Description of 360 Harbor Ln, Key Biscayne, FL 33149

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.

Property Details for 360 Harbor Ln, Key Biscayne, FL 33149

Bathrooms Full
5
Bathrooms Half
1
Interior 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
Appliances
Dishwasher, Disposal, Dryer, Electric Range, Microwave, Other Equipment/Appliances, Water Purifier, Refrigerator, Wall Oven, Washer
Flooring
Marble, Wood
Heating
Central, Electric
Cooling
Central Air, Electric
Furnished
Unfurnished
Architectural Style
Detached, Two Story, Modern/Contemporary
Garage Spaces
0
Parking Features
Attached Carport, Driveway, Paver Block
Pool Features
In Ground, Heated
Pool Private
No
Year Built Details
Resale
Direction Faces
Northeast

Building Information for 360 Harbor Ln, Key Biscayne, FL 33149

Building Name
BISCAYNE KEY ESTATES
Building Area Total
5156
Building Area Units
Square Feet
Association
No

Property Information for 360 Harbor Ln, Key Biscayne, FL 33149

Lot Features
Less Than 1/4 Acre Lot
Lot Size Square Feet
9,300
Waterfront
No
View
Garden, Pool
Construction Materials
Concrete Block Construction, Other
Roof
Flat Tile
Exterior Features
Built-In Grill, Lighting, Open Balcony
Sewer
Public Sewer
Water Source
Municipal Water
New Construction
No

Public Records for 360 Harbor Ln, Key Biscayne, FL 33149

Parcel Number
24-52-05-001-1490
Tax Annual Amount
$31,314
Tax Year
2025
Tax Legal Description
5 & 6 55 42 BISCAYNE KEY ESTS PB 50-61 LOT 3 BLK 10 LOT SIZE 8000 SQ FT OR 12488-3411 0485 4 COC 24947-2228 09 2006 5
Zoning
0100
County Or Parish
Miami-Dade County

Schools Near 360 Harbor Ln, Key Biscayne, FL 33149

Elementary School
Keybiscayne
Middle School
Ponce De Leon
High School
Coral Gables

School assignments are provided by the listing and should be independently verified.

Payment Calculator

Estimated Payment
$57,898/mo
Principal & Interest
$50,313
Property Taxes
$2,610
Home Insurance
$4,975

Estimate only — actual rates, taxes and insurance vary. Not a loan offer or financial advice. Financing through Matthew Gromadzki, NMLS #2560919 · Innovative Mortgage Services, Inc., NMLS #250769.

Location

360 Harbor Ln, Key Biscayne, FL 33149 · See all Key Biscayne homes for sale

Courtesy of Coldwell Banker Realty

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More information about 360 Harbor Ln, Key Biscayne, FL 33149

360 Harbor Ln is a single family home for sale in Key Biscayne, FL 33149. This property was listed for sale on October 19, 2026 by Coldwell Banker Realty, it's currently listed at $9,950,000. This listing's school district is Miami-Dade County Public Schools. Nearby schools include Keybiscayne, Ponce De Leon and Coral Gables. 360 Harbor Ln is a 6-bed, 6-bath, 4,341 sqft single family home built in 2025.