360 Harbor Lane, Key Biscayne, FL 33149

New Listing

$9,950,000

Contemporary residence featuring floor-to-ceiling glass windows, stone cladding, a standing-seam metal roof, integrated glass terrace railings, and stone staircases

Modern exterior featuring floor-to-ceiling glass walls, stacked stone facade, expansive second-level glass balcony railings, and a rectangular swimming pool set within a manicured landscape

Living area featuring expansive floor-to-ceiling black-framed glass walls, recessed ceiling lighting, and built-in shelving

Floor-to-ceiling sliding glass walls, light-toned chevron-patterned wood-finish flooring, sculptural multi-tier chandelier, and recessed ceiling lighting

Open-concept kitchen featuring dark floor-to-ceiling cabinetry, a central island with a waterfall countertop, recessed ceiling lighting, multi-pendant illumination, and expansive floor-to-ceiling sliding glass walls

Gourmet kitchen featuring custom dark cabinetry, quartz countertops, a central island with a fluted pillar detail, herring-bone pattern wood-finish flooring, and integrated stainless steel appliances

Gourmet kitchen featuring floor-to-ceiling dark wood cabinetry, a large central island with a fluted stone base, herringbone wood-finish flooring, built-in double ovens, and contemporary pendant lighting

Covered outdoor patio with wood-slatted ceiling, composite decking, recessed lighting, glass railing, and in-ground pool

Modern architectural residence featuring floor-to-ceiling windows, stone exterior cladding, a second-story glass-railed balcony, an in-ground swimming pool, and manicured landscaping

Modern two-story architectural exterior featuring stone tile cladding, wide-plank wood-finish soffits, expansive glass sliding doors, and a glass-paneled staircase railing

Floor-to-ceiling black-framed windows, herringbone-pattern wood-finish flooring, recessed lighting, and integrated drapery tracks

Elevated outdoor terrace featuring synthetic turf flooring, frameless glass railings, and a covered ceiling with slatted wood-finish detailing

Bathroom featuring dual-sink vanity with stone countertop, walk-in shower with stone surround, brass-finish fixtures, and integrated sauna

Floor-to-ceiling windows with black frames, wood-finish flooring, and recessed ceiling lighting

Dual-sink vanity with a solid-surface countertop, rectangular under-mount basins, polished metal gooseneck faucets, and a full-width wall mirror

Floor-to-ceiling glass sliding doors, wood-finish herringbone flooring, built-in floor-to-ceiling cabinetry, recessed lighting, and a globe pendant fixture

Floor-to-ceiling windows with black frames, wood-finish flooring, and a wall-mounted floating desk

Covered patio with horizontal wood-slat ceiling, recessed lighting, composite decking, and glass panel railing overlooking a landscaped yard

Modern terrace featuring natural stone wall cladding, wood-finish decking, black-framed floor-to-ceiling glass panels, and a frameless glass railing

Outdoor terrace featuring wood-finish decking, glass panel railing, and a built-in outdoor kitchen with a stainless steel grill and stone-style cabinetry

Aerial perspective featuring a metal roof, rectangular swimming pool, integrated patio pergola, and mature landscaping

Contemporary multi-level exterior featuring floor-to-ceiling glass walls, sleek glass balcony railings, stone-finish cladding, and a private swimming pool with integrated hardscaping

Aerial perspective of a coastal residential area featuring multi-level dwellings, terracotta tile roofing, mature canopy trees, and expansive water frontage

Aerial perspective of a multi-story residence featuring a dark metal roof, expansive glass windows, and mature tropical landscaping within a coastal environment

Aerial perspective featuring a metal roof structure, terracotta tile roofing, mature landscaping, and proximity to the coastline

Property Type: Residential Bedrooms: 6 Baths: 6 Square Footage: 5,156 Status: Active

Current Price: $9,950,000 List Date: 10/19/2026 Last Modified: 10/19/2026

Overview

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 vanitie ... (Read more)

Listing Details MLS# A12104430

General Property Information

Property Sub Type: Single Family Residence
Bedrooms Total: 6
Bathrooms Total: 6
Bathrooms Full: 5
Bathrooms Half: Yes
Building Area Main: 5156
Living Area Main: 4341
Year Built: 2025
Carport YN: Yes
Attached Carport YN: Yes
Carport Spaces: 2
Covered Spaces: 2
Lot Size Area: 9300
Lot Size Acres: 0.21
Lot Size Dimensions: 9300
Senior Community YN: No
Outdoor Living Spaces YN: Yes
Stories Total: 2
Direction Faces: Northeast
Pool Private YN: Yes
Furnished: Unfurnished

Property Features

Dining Area: Dining/Living Room; Formal Dining; Kitchen Dining Exterior Features: Built-in Barbecue; Lighting Flooring: Marble; Wood Parking Features: Driveway; Paver Block; Attached Carport; Carport Property Condition: Resale Appliances: Dishwasher; Disposal; Dryer; Electric Range; Microwave; Oven; Refrigerator; Washer; Water Purifier; Other Architectural Style: Contemporary Construction Materials: Block; Other Cooling: Central Air; Electric Heating: Central; Electric Interior Features: Built-in Features; Closet Cabinetry; Entrance Foyer; High Ceilings; Walk-In Closet(s); Other Levels: Two Listing Terms: Cash; Conventional Other Equipment: Other Pets Allowed YN: Yes Pool Features: Heated; In Ground Possession: Negotiable Restrictions: No Restrictions Roof: Flat; Tile Sewer: Public Sewer Special Information: Property Survey Available Sprinkler Description: Auto Sprinkler; City Sprinkler System Tax Information: City/County; Tax Reflects No Exemptions Unit Description: Studio View: Garden; Pool Water Source: Public Window Features: Blinds Showing Requirements: 24 Hour Notice Outdoor Living Spaces: Balcony; Deck Balcony Details: Balcony - Open Room Types: Den; Family Room; Laundry; Maid/In-Law Quarters; Other

Contract Information

Comp Sale YN: No
Original List Price: 9950000
Occupant Type: Call Listing Agent

Location and Legal

Country: United States
County Or Parish: Miami-Dade
County Parish Name: Miami-Dade
Street Number: 360
Street Name: Harbor
Street Suffix: Lane
City Name: Key Biscayne
Municipal Code: 24
State Or Province: FL
Postal Code: 33149
Postal Code +4: 1712
Postal Zip: 33149
Subdivision Name: BISCAYNE KEY ESTATES
Area: 2520
Elementary School: Key Biscayne K-8
Middle Or Junior School: Ponce De Leon
High School: Coral Gables
Parcel Number: 2452050011490
Subdivision Number: Yes
Zoning: 0100
Flood Zone: AE

Financial Information

Membership Fee Required YN: No
Tax Annual Amount: 31314
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

Status Change Information

Major Change Timestamp: 2026-10-19T04:00:00Z
Major Change Type: New Listing
Status Change Date: 2026-10-19

More Information

Entry Information

Entry Level: Yes

Storm Protection

Impact Glass: Complete

Price Calculations

Current Price To SqFt: 2292.09

Section Details

Parcel Number MLX: 1490

Originating Details

Originating System Key: 566501064
Originating System ID: M00000151

Room Information

Room Name
Den
Family Room
Maid/In-Law Quarters
Other
Laundry

Documents

Survey ›

Special Features ›

Floor Plan ›

Listing Office: Coldwell Banker Realty

Last Updated: October - 19 - 2026

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360 Harbor Lane, Key Biscayne, FL 33149 (MLS# A12104430)