46
$6,950,000
5 bd · 6 ba · 5,421 sqft
685 Harbor Ln, Key Biscayne, FL
Marisela Gonzalez Servat · Avanti Way Realty LLC

No listing photos
4
Beds
3
Baths
1,900
Sqft
1953
Year built
Range $5,371,952 – $5,926,746 · as of August 30, 2026
ATTOM automated valuation model · 53 published estimates over 6.7 years · shaded band is the model's own published low-to-high range
Highest reading $5,649,349 in August 2026; lowest $1,053,721 in April 2020. The vertical scale starts at the series' own low, not at zero — it is drawn to show movement, not absolute size.
$1,129,870
Estimated monthly payment
$36,587/mo
Loan amount $4,519,479. Estimate only — your actual rate and payment depend on credit, location, and lender.
2025 roll
School ratings (A+ to F) from HJN community data.
St Christophers
PK-6 · Montessori
215 students · 24.4:1 student–teacher
Key Biscayne K-8 Center
PK-5 · Regular · Dade County School District
884 students · 18.0:1 student–teacher
St Agnes Academy
PK-8 · Regular
434 students · 13.4:1 student–teacher
Key Biscayne Presbyterian School
PK-1 · Regular
29 students · 6.6:1 student–teacher
Mast Academy
6-12 · Regular · Dade County School District
1,571 students · 20.4:1 student–teacher
Immaculata-la Salle High School
9-12 · Regular
876 students · 12.1:1 student–teacher
Fisher Island Day School
PK-8 · Regular
126 students · 10.2:1 student–teacher
La Prima Casa Montessori
PK-KG · Montessori
2 students · 1.0:1 student–teacher
BeachesMLS
MIAMI REALTORS MLSSome properties which appear for sale on this web site may subsequently have sold or may no longer be available.
46
$6,950,000
5 bd · 6 ba · 5,421 sqft
685 Harbor Ln, Key Biscayne, FL
Marisela Gonzalez Servat · Avanti Way Realty LLC
22$5,450,000
4 bd · 5 ba · 4,200 sqft
785 Crandon Blvd 705/805, Key Biscayne, FL
Douglas Kinsley · Fortune Christie's International Real Estate
Price Reduced39$5,378,000
4 bd · 4 ba · 3,549 sqft
690 Warren Ln, Key Biscayne, FL
Brigitte Nachtigall · One Sotheby's International Realty
Price Reduced37$5,950,000
4 bd · 5 ba · 4,200 sqft
785 Crandon Blvd 205/305, Key Biscayne, FL
Kaila Mardoyan · Douglas Elliman
Price Reduced64$4,899,000
5 bd · 6 ba · 4,220 sqft
24 Grand Bay Estates Circle, Key Biscayne, FL
Anthony D Vlahovic · Engel & Voelkers Vero Beach
Price Reduced37$5,100,000
5 bd · 5 ba · 3,535 sqft
797 Glenridge Rd, Key Biscayne, FL
Camila Freytes De Marotta · Swann Realty Partners, LLC.





Within 2 miles of this home: 15 restaurants and cafés, 1 grocery store, 11 parks and green spaces, and 15+ transit stops.
Place data from OpenStreetMap.
Craft Key Biscayne
American restaurant · Crandon Boulevard
Novecento
Argentinian restaurant · Crandon Boulevard
Origin Asian Bistro and Sushi
Narbona
Crandon Boulevard
Starbucks
Crandon Boulevard
Subway
Crandon Boulevard
Domino's
Crandon Boulevard
Pita Pockets KB
Lebanese restaurant · Crandon Boulevard
Winn-Dixie
Crandon Boulevard
Village Green
Key Biscayne Village Green Playgound
Paradise Park
Crandon Boulevard
Crandon Park Beach
Hampton Park
Lake Daniela
Harbor Park
Harbor Drive
Crandon Beach
Crandon Boulevard & Heather Drive
Crandon Boulevard & Sonesta Drive
Crandon Boulevard & Grand Bay Drive
Crandon Boulevard & McIntire Street
Crandon Boulevard & Harbor Drive
Crandon Boulevard & Ocean Lane Drive
Crandon Boulevard & East Enid Drive
Harbor Drive & Fernwood Road
Rings at ½ mile and 1 mile. Basemap © OpenMapTiles © OpenStreetMap contributors.
Open the Key Biscayne camera map4 license-plate readers mapped within ½ mile of this home, all identified as Flock Safety devices. Nearest: 0.4 mi north.
| Device type | Within ½ mi | Within 1 mi |
|---|---|---|
| License-plate readers | 4 | 5 |
| of which Flock Safety | 4 | 5 |
Community-reported via OpenStreetMap; may be incomplete. Data as of . © OpenStreetMap contributors (ODbL)
License-plate readers (ALPR) are fixed cameras that photograph passing vehicles and read their plates. Records are typically shared with the agency or association that operates the camera.
Flock Safety is a company whose plate-reader cameras are used by police departments, cities, HOAs and businesses. Its devices are usually solar-powered and pole-mounted.