House in Key Biscayne, FL 33149Biscayne Key Estates, 360 Harbor Ln
New - 6 days 21 hrs ago






$9,950,000
6
Beds51/2
Baths4,341
SqFt$2,292
$/SqFtUltra Luxury HouseProperty Type
2025Year Built
$2,292/SqFtPrice per sq ft
Garden,PoolView
Contemporary Modern, Detached, Two StoryStyle
BalconyExterior Features
NEW CONSTRUCTION ~Blt. 2025
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.New Construction is the listings in the subdivision built in the last 2 years and in most cases never been occupied.
Listing Courtesy Of: Coldwell Banker Realty
Local Realty Services Provided By: Best of Luxury Realty
On Site: 7 DaysUpdated: 2 Days agoPage Views: 0
Features
MLS Number: A12104430
Bedrooms
- Bedrooms: 6
Bathrooms
- Bathrooms: 5
- Half Bathrooms: 1
Exterior and Lot Features
- Exterior Features: Balcony, Deck, SecurityHighImpactDoors, Lighting, OutdoorGrill
- View: Garden,Pool
Interior, Heating and Cooling
- Interior Features: BuiltInFeatures, BedroomOnMainLevel, ClosetCabinetry, DiningArea, SeparateFormalDiningRoom, DualSinks, EntranceFoyer, FirstFloorEntry, HighCeilings, KitchenDiningCombo, LivingDiningRoom, SittingAreaInPrimary, ShowerOnly, UpperLevelPrimary, WalkInClosets
- Equipment / Appliances: BuiltInOven, Dryer, Dishwasher, ElectricRange, Disposal, Microwave, Other, Refrigerator, WineCooler, WaterPurifier, Washer
- Heating Description: Central,Electric
- Cooling Description: CentralAir,Electric
Building and Construction
- Floor Description: Hardwood,Marble,Wood
- Windows/Treatment: Blinds,ImpactGlass
- Year Built: 2025
- Year Built Description: Resale
- Style: ContemporaryModern, Detached, TwoStory
Waterfront and Water Access
- Waterfront Frontage: No info
School Information
- Elementary School: Keybiscayne
- Middle School: Ponce De Leon
- Senior High School: Coral Gables
Other Property Info
- Garage: No info
- Listing Date: 2026-10-19T09:58:54.000-00:00
- Directions: Northeast
- Pets Allowed: No,Yes
Taxes, Fees & More
- Taxes: 31314
- Parking Description: AttachedCarport, Driveway, PaverBlock
Apples-to-Apples Comparables
Price History
Date
Event
Price
Change
Price Per
10/10/2026
Listed
$10M
$2,292 ft2
$24,672 m2
10/10/2026
$10M
Event
Listed
Price Per
$2,292 ft2
$24,672 m2
Price per square foot and days on website are not provided values and are calculated by Subdivisions.
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Community Snapshot
4 – 6 BR
Bedrooms
$3.8M – $9.2M
Price Tier
1,215 - 9,848
SqFt Range
1964
Year Build
2
Total Floors
351
Total Units
All Key Biscayne, FL Ultra Luxury Ultra Luxury Homes & Condos
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- Cape Florida House7
- Casa Del Mar Mixed5
- Club Tower Condo4
- Gardens Of Key Biscayne Alhambra Townhouse1
- Grand Bay Estates House1
- Grand Bay Tower Condo3
- Holiday Colony House0
- Hurricane Cove House1
- Island House Co-Op5
- Key Cassa Condo2
- Lake Villa Condo2
- Mashta Island Mixed4
- Matheson Estates House0
- Ocean Tower Condo5
- Oceana Key Biscayne Mixed6
- Resort Villa Condo2
- Sands Of Key Biscayne Condo2
- The Ritz-Carlton Key Biscayne Condo1
- Tropical Isle Homes House14
Other Key Biscayne, FL Homes & Condos Price Range Segments
Entry-Level
Entry-Level
Premium
Premium
Mid-Tier
Mid-Tier9
High-End
High-End28
- Bahia Mar Of Key Biscayne Condo0
- Botanica At Key Colony Condo2
- Cape Florida Club Condo5
- Cay Polynesia Condo2
- Commodore Club East Condo3
- Commodore Club South Condo7
- Commodore Club West Condo5
- Crandon Tower Condo2
- Fernwood Homes Mixed0
- Galen Drive West Condo0
- Governors Lodge Condo0
- Grand Bay Residences Condo2
- Grand Bay Villas House0
- Grapetree Townhouses Of Key Biscayne Townhouse1
- Indies Condo1
- Key Islander Condo0
- Lake Tower Condo0
- Le Phare Key Biscayne Mixed2
- Mar Azul Condo4
- North Sunrise Condo0
- Ocean Lane Plaza Condo2
- Oceansound At Key Colony Condo1
- Solimar Of Key Biscayne Condo0
- Sunrise Drive Area Condo1
- The EmeraldBay At Key Colony Condo5
- The Pyramids At Key Biscayne Condo1
- Tidemark At Key Colony Mixed4
- Towers Of Key Biscayne Condo5
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