685 Harbor Lane, Key Biscayne, FL 33149

$6,950,000 — Active

Property Features

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Set on one of the largest lots in Key Biscayne, a rare 12,200 sqft parcel, this colonial-style residence, known as Villa Rosa, was designed by renowned architect Cesar Molina and sits on a quiet, low-traffic street in a well-established, family-friendly neighborhood.The generous lot allows for a spacious backyard with pool and abundant green space, ideal for outdoor living and entertaining. Double balconies and covered terraces create a seamless indoor-outdoor flow throughout the home.This 5-bedroom residence offers bright interiors and a chefs kitchen with island, Sub-Zero refrigerator, wine cooler, double ovens, and two dishwashers. The primary suite includes a private terrace, oversized walk-in closet with safe, and dual baths with sauna. Also includes maids quarters and hurricane code construction.Minutes from the beach, parks, and top schools - a rare opportunity to own a well-designed home with an exceptional lot on one of Key Biscayne's most desirable streets.

Property Details

  • Listing ID: A11997896
  • Status: Active
  • Listing Date: 2026-04-16
  • Property Type: Single Family Residence
  • Subdivision: BISCAYNE KEY ESTATES
  • County: Miami-Dade
  • MLS Area: 2520
  • Bedrooms: 5
  • Full Bathrooms: 5
  • Half Bathrooms: 1
  • Living Area Sq Ft: 5,421
  • Year Built: 2001

Financial

  • List Price: $6,950,000
  • HOA Fee: None
  • Taxes: $40,335/yr

Features & Amenities

  • View: Other
  • Parking: Driveway, Garage, Attached Garage, Attached
  • Cooling: Central Air
  • Heating: Central
  • Flooring: Marble, Tile, Wood
  • Roof: Aluminum
  • Interior Features: Bar, Entrance Foyer, Kitchen Island, Walk-In Closet(s), Closet Cabinetry, Storage
  • Exterior Features: Lighting, Balcony
  • Community Amenities: Beach Club Available

Courtesy of Avanti Way Realty LLC
Contact Starfish Real Estate to schedule an appointment or call .

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© 2026 Starfish Real Estate. Listings updated Nov 8, 2026 2:03 am. Listing data is derived from the Broker Reciprocity Program of the Realtor Association of Indian River County (RAIRC) and BeachsMLS. Properties listed by brokers other than Starfish Real Estate are identified with the applicable MLS logo and include the listing broker's name. Not all properties available through either MLS may be displayed. All MLS data is the copyrighted property of the respective MLS and its participants. Data is deemed reliable but is not guaranteed accurate and should be independently verified prior to entering into any transaction.