Aquantis Realty

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Offered at

$9,950,000

360 Harbor Lane, Key Biscayne, FL 33149

6
Beds
5
Full Baths
1
Half Baths
4,341
Sq.Ft.
MLS A12104430

Listing courtesy of Judith H Zeder, Coldwell Banker Realty

Property Description

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.

Overview

At a glance

Property Type
Residential
Property Sub-Type
Single Family Residence
Address
360 Harbor Lane, Key Biscayne, FL 33149
Zoning
0100
MLS ID
A12104430
Listing Date
2026-10-19
Last Updated
10/23/2026, 11:23:56 AM
Days on Market
6
Subdivision
BISCAYNE KEY ESTATES

Features & Amenities

The Details

Interior

Bedrooms
6
Full Bathrooms
5
Half Bathrooms
1
Flooring
Marble, Wood
Appliances
Dryer, Disposal, Dishwasher, Electric Range, Microwave, Oven, Other, Refrigerator, Water Purifier, Washer
Interior Features
Built-in Features, Entrance Foyer, High Ceilings, Other, Walk-In Closet(s), Closet Cabinetry
Windows
Blinds

Exterior

Construction
Block, Other
Exterior Features
Built-in Barbecue, Lighting, Balcony
Patio & Porch
Deck
Pool
Heated, In Ground
Parking
Attached Carport, Driveway, Paver Block, Carport
Garage Spaces
0
Water Source
Public
Sewer
Public Sewer
Cooling
Central Air, Electric
Heating
Central, Electric

Details

Building Area
5,156 sq.ft.
Lot Size
9,300 sq.ft.
Lot Size (Acres)
0.21 acres
Subdivision
BISCAYNE KEY ESTATES
Architectural Style
Contemporary
Stories
2
Year Built
2025
View
Garden, Pool
Direction Faces
Northeast
County
Miami-Dade
Zoning
0100

Financial

List Price
$9,950,000
Original List Price
$9,950,000
Annual Tax
$31,314/yr
Tax Year
2025

Location

Your agent

Stephanie Mordes

Stephanie Mordes

VP — Sales

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Information & Accuracy

All information provided on this page is deemed reliable but is not guaranteed. Square footage, lot size, room dimensions, year built, taxes, and HOA figures are sourced from the MLS, the seller, or public records, and Aquantis Realty makes no representation or warranty as to their accuracy. All measurements and material facts should be independently verified by the buyer.