360 Harbor Ln, Key Biscayne FL 33149, photo 1
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$9,950,000

Single Family ResidenceActive
⏱️ Listed today
6Beds
6Baths
4,341Sq Ft
2025Built

360 Harbor Ln, Key Biscayne FL 33149

MLS #A12104430

About This Property

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.

🏢Learn about Biscayne Key EstatesBuilding amenities, floor plans, market stats and available units.→

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Marie I. Sanjurjo
Licensed Broker
Blue Mar Real Estate Group
📞 (305) 680-5672💬 WhatsApp Marie✉️ [email protected]

About Key Biscayne

Key Biscayne is a barrier island community just a bridge ride from Brickell, offering an island lifestyle wrapped around Crandon Park, Cape Florida State Park, and the Crandon Golf Course. The village is known for its safety, top-rated schools, and walkable pace, with residents ranging from young families to international buyers seeking secondary residences. Limited inventory and tight geography keep prices premium relative to mainland Miami.

Explore Key Biscayne →📊 Key Biscayne market report

Property Details

Property Type

Single Family Residence

Year Built

2025

Living Area

4,341 sq ft

Lot Size

9,300 sq ft

Bedrooms

6

Bathrooms

6

Pool

No

Waterfront

No

Cooling

Central Air, Electric

Heating

Central, Electric

Roof Type

Flat Tile

Flooring

Marble, Wood

Construction

Concrete Block Construction, Other

Style

Detached, Two Story, Modern/Contemporary

HOA Fee

None

Annual Taxes

$31,314 (2025)

Days on Market

0

MLS #

A12104430

Features & Amenities

Interior

First Floor EntryBuilt-in FeaturesCloset CabinetryEntrance FoyerOtherVolume CeilingsWalk-In Closet(s)Den/Library/OfficeFamily RoomMaid/In-Law QuartersUtility Room/Laundry

Appliances

DishwasherDisposalDryerElectric RangeMicrowaveOther Equipment/AppliancesWater PurifierRefrigeratorWall OvenWasher

Exterior

Built-In GrillLightingOpen Balcony

Community

None

Other

Attached CarportDrivewayPaver Block

Nearby Schools

Assigned public schools pulled from Miami-Dade County Public Schools’s official attendance-boundary data. Verify current boundaries with MDCPS before buying — zones can change year to year.

Assigned Public Schools
Elementary
Key Biscayne K-8 Center
Grades PK-8
150 W McIntire St., Key Biscayne 33149
Middle
Ponce de Leon MS
Grades 6-8
5801 Augusto St., Coral Gables 33146
High
Coral Gables Senior High
Grades 9-12
450 Bird Rd., Coral Gables 33146
Private Schools Within 5 Miles
Key Biscayne Presbyterian School0.8 mi
160 Harbor Dr, Key Biscayne
St Agnes Academy0.9 mi
122 Harbor Dr, Key Biscayne
St Christophers - By-The-Sea Montessori School0.9 mi
95 Harbor Dr, Key Biscayne
Immaculata-La Salle High School4.4 mi
3601 S Miami Ave, Miami
Ransom Everglades Middle School4.9 mi
2045 S Bayshore Dr, Miami
La Prima Casa Montessori - Brickell Campus4.9 mi
1770 Brickell Ave, Miami

School data source: Miami-Dade County Open Data Hub

Location

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City

Key Biscayne

State

FL

ZIP Code

33149

County

Miami-Dade County

Subdivision

BISCAYNE KEY ESTATES

$9,950,000
360 Harbor Ln, Key Biscayne FL 33149
6Beds
6Baths
4,341Sq Ft
📞 (305) 680-5672💬 WhatsApp
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360 Harbor Ln, Key Biscayne FL 33149$9,950,000

Listing provided by Judith Zeder at Coldwell Banker Realty. Data from Miami Association of REALTORS®. All information deemed reliable but not guaranteed. Listing #A12104430.