360 Harbor Ln
Key Biscayne, FL 33149
$9,950,000
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.
| Listing ID: | A12104430 |
|---|---|
| Property Type: | Residential |
| Status: | Active |
| Bathrooms Full: | 5 |
| Living Area: | 4,341 |
| Tax Annual Amount: | $31,314 |
| Waterfront?: | No |
| County Or Parish: | Miami-dade County |
| Postal Code: | 33149 |
| Building Name: | BISCAYNE KEY ESTATES |
| Elementary School: | Keybiscayne |
| Flooring: | Marble, Wood |
| Garage Spaces: | 0 |
| High School: | Coral Gables |
| 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 |
| Listing Contract Date: | 2026-10-19 |
| Status: | Active |
| Parking Features: | Attached Carport, Driveway, Paver Block |
| Postal Code Plus4: | 1712 |
| Rooms Total: | 0 |
| State Or Province: | FL |
| Water Source: | Municipal Water |
| Bathrooms Total Integer: | 6 |
| Building Area Units: | Square Feet |
| Carport Spaces: | 2 |
| Construction Materials: | Concrete Block Construction, Other |
| Covered Spaces: | 2 |
| Direction Faces: | Northeast |
| Heating?: | Yes |
| Living Area Units: | Square Feet |
| MLS Area Major: | Biscayne Key Estates |
| Open Parking?: | Yes |
| Parcel Number: | 24-52-05-001-1490 |
| Possession: | Funding |
| Public Survey Range: | 52 |
| Public Survey Township: | 52 |
| Roof: | Flat Tile |
| View?: | Yes |
| Window Features: | Clear Impact Glass, Complete Impact Glass, Blinds, High Impact Windows, Impact Glass |
| Year Built Details: | Resale |
| Zoning: | 0100 |
| Ok To Advertise ListMiamire Ok To Advertise List: | No |
| Pool Dimensions: | 0 |
| Ratio Current Price By Sqft: | $2,292.10 |
| Subdivision InformationMiamire Subdivision Information: | No Subdiv/Park Info |
| Room Bedroom Features: | At Least 1 Bedroom Ground Level, Primary Bedroom Upstairs, Sitting Area - Primary Bedroom, Studio |
| Room Living Room Features: | Den/Library/Office, Family Room, Maid/In-Law Quarters, Other, Utility Room/Laundry |
| List Price: | $9,950,000 |
|---|---|
| Property Sub Type: | Single Family Residence |
| Bedrooms Total: | 6 |
| Bathrooms Half: | 1 |
| Lot Size Square Feet: | 9,300 |
| Architectural Style: | Detached, Two Story, Modern/Contemporary |
| City: | Key Biscayne |
| Subdivision Name: | Biscayne Key Estates |
| Year Built: | 2025 |
| Appliances: | Dishwasher, Disposal, Dryer, Electric Range, Microwave, Other Equipment/Appliances, Water Purifier, Refrigerator, Wall Oven, Washer |
| Cooling: | Central Air, Electric |
| Exterior Features: | Built-In Grill, Lighting, Open Balcony |
| Furnished: | Unfurnished |
| Heating: | Central, Electric |
| Laundry Features: | Utility Room/Laundry |
| Lot Features: | Less Than 1/4 Acre Lot |
| Middle Or Junior School: | Ponce De Leon |
| Pool Features: | In Ground, Heated |
| Sewer: | Public Sewer |
| Building Area Total: | 5156 |
| Carport?: | Yes |
| Community Features: | None |
| Cooling?: | Yes |
| Door Features: | High Impact Doors |
| Entry Location: | Foyer |
| Listing Terms: | All Cash, Conventional |
| Lot Size Units: | Square Feet |
| Original List Price: | $9,950,000 |
| Patio And Porch Features: | Deck, Open Balcony |
| Public Survey Section: | 5 |
| Structure Type: | Pool Only, House |
| Tax Year: | 2025 |
| View: | Garden, Pool |
| AreaMiamire Area: | 52 |
| Lp Amt Sq Ft: | $2,292.10 |
| Pets Allowed Yn: | Yes |
| Pool Yn: | Yes |
| RestrictionsMiamire Restrictions: | No Restrictions |
| StyleMiamire Style: | Pool Only |
| Type Of AssociationMiamire Typeof Association: | None |
| Room Dining Room Features: | Dining/Living Room, Formal Dining, Kitchen Dining |
| Room Master Bathroom Features: | Dual Sinks, Shower Only |
Listing Courtesy of: Coldwell Banker Realty
305-613-5550
Mortgage Calculator
Copyright 2026 MIAMI REALTORS® MLS. IDX information is provided exclusively for consumers' personal, non-commercial use, that it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing, and that data is deemed reliable but is not guaranteed accurate by the MLS.
MIAMI REALTORS® MLS data last updated on October 20, 2026 01:34 AM - PT
Property Last Updated: October 20, 2026 01:34 AM - PT




