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5 Beds
6 Baths
5,421 sqft

$6,950,000

685 Harbor Ln, Key Biscayne FL, 33149

Price per sqft$1,282.05
Built in2001
Property size5,421 sqft
Property typeResidential

Overview

Active

Listed Apr 16, 2026

Updated 2 weeks ago

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.

$46,239/mo

Est. mortgage payment based on a $6,950,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
A11997896

Interior Features

Bedrooms
5
Bathrooms
6
Cooling
Yes
Heating
Yes
Basement
No

Exterior Features

Lot Size
0.21 Acres

Other Property Details

Taxes
$40,335
Tax Frequency
Annually
Garage
Yes
View
Yes
Pool
Yes
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Based on information from the Miami Association of REALTORS®. This information is for your personal, non-commercial use and may not be used for any purpose other than to identify prospective properties you may be interested in purchasing. Display of MLS data is usually deemed reliable but is NOT guaranteed accurate by the MLS.  All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Unless otherwise specified in writing, Broker/Agent has not and will not verify any information obtained from other sources. The Broker/Agent providing the information contained herein may or may not have been the Listing and/or Selling Agent. The listing broker’s offer of compensation is made only to participants of the MLS where the listing is filed. 

©2026 Miami Association of REALTORS® all rights reserved. 

Data last updated 1:00 AM UTC, 9/10/2026.

Listed by:  Avanti Way Realty LLC, 305-229-1146

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