There are multiple listings for this address:
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.
Listing Provided Courtesy of Avanti Way Realty LLC at 305-229-1146
Property Details
Price:
$6,950,000
MLS #:
A11997896
Status:
Active
Beds:
5
Baths:
5.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
BISCAYNE KEY ESTATES
Neighborhood:
2520
Listed Date:
Oct 14, 2026
Finished Sq Ft:
5,421
Total Sq Ft:
6,971
Lot Size:
392,040,000 sqft / 0.21 acres (approx)
Year Built:
2001
See this Listing
Schools
Elementary School:
Key Biscayne K-8
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Electric Water Heater, Dishwasher, Disposal, Dryer, Gas Range, Ice Maker, Refrigerator
Bathrooms
5 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Marble, Tile, Wood
Heating
Central
Interior Features
Bar, Closet Cabinetry, Entrance Foyer, Kitchen Island, Storage, Walk-In Closet(s)
Levels
Two
Exterior
Association Amenities
Beach Club Available
Attached Garage YN
1
Covered Spaces
1
Direction Faces
Northwest
Exterior Features
Balcony, Lighting
Garage Spaces
1
Parking Features
Attached, Attached Garage, Driveway, Garage
Patio And Porch Features
Porch – Open, Porch, Patio
Roof
Aluminum
View
Other
Window Features
Plantation Shutters
Financial
Tax Year
2025
Taxes
$40,335
Map
Community
- Address685 Harbor Lane Key Biscayne FL
- SubdivisionBISCAYNE KEY ESTATES
- CityKey Biscayne
- CountyMiami-Dade
- Zip Code33149
Market Summary
Current real estate data for Single Family in Key Biscayne as of Nov 04, 2026
41
Single Family Listed
150
Avg DOM
2,613
Avg $ / SqFt
$14,294,537
Avg List Price
Property Summary
- Located in the BISCAYNE KEY ESTATES subdivision, 685 Harbor Lane Key Biscayne FL is a Single Family for sale in Key Biscayne, FL, 33149. It is listed for $6,950,000 and features 5 beds, 6 baths, and has approximately 5,421 square feet of living space, and was originally constructed in 2001. The current price per square foot is $1,282. The average price per square foot for Single Family listings in Key Biscayne is $2,613. The average listing price for Single Family in Key Biscayne is $14,294,537.
Similar Listings Nearby

685 Harbor Lane
Key Biscayne, FL
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.
Listing Provided Courtesy of Avanti Way Realty LLC at 305-229-1146
Property Details
Price:
$25,000
MLS #:
A12063110
Status:
Pending
Beds:
5
Baths:
5.5
Type:
Rental
Subtype:
Single Family Residence
Subdivision:
BISCAYNE KEY ESTATES
Neighborhood:
2520
Listed Date:
Aug 2, 2026
Finished Sq Ft:
5,421
Total Sq Ft:
6,971
Lot Size:
392,040,000 sqft / 0.21 acres (approx)
Year Built:
2001
See this Listing
Schools
Elementary School:
Key Biscayne K-8
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Electric Water Heater, Dishwasher, Disposal, Dryer, Gas Range, Ice Maker, Refrigerator
Bathrooms
5 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Marble, Tile, Wood
Heating
Central
Interior Features
Bar, Closet Cabinetry, Entrance Foyer, Kitchen Island, Storage, Walk-In Closet(s)
Levels
Two
Exterior
Association Amenities
Beach Club Available
Attached Garage YN
1
Covered Spaces
1
Direction Faces
Northwest
Exterior Features
Balcony, Lighting
Garage Spaces
1
Parking Features
Attached, Attached Garage, Driveway, Garage
Patio And Porch Features
Porch – Open, Porch, Patio
Roof
Aluminum
View
Other
Window Features
Plantation Shutters
Financial
Tax Year
2025
Taxes
$40,335
Map
Community
- Address685 Harbor Lane Key Biscayne FL
- SubdivisionBISCAYNE KEY ESTATES
- CityKey Biscayne
- CountyMiami-Dade
- Zip Code33149
Market Summary
Current real estate data for Rental in Key Biscayne as of Nov 04, 2026
41
Rental Listed
150
Avg DOM
2,613
Avg $ / SqFt
$14,294,537
Avg List Price
Property Summary
- Located in the BISCAYNE KEY ESTATES subdivision, 685 Harbor Lane Key Biscayne FL is a Rental for sale in Key Biscayne, FL, 33149. It is listed for $25,000
