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
No listing photos
5
Beds
5.5
Baths
4,102
Sqft
2011
Year built
Range $6,268,903 – $7,315,149 · as of July 14, 2026
ATTOM automated valuation model · 53 published estimates over 6.5 years · shaded band is the model's own published low-to-high range
Highest reading $6,792,026 in July 2026; lowest $1,492,468 in April 2020. The vertical scale starts at the series' own low, not at zero — it is drawn to show movement, not absolute size.
$1,358,405
Estimated monthly payment
$43,520/mo
Loan amount $5,433,621. Estimate only — your actual rate and payment depend on credit, location, and lender.
2025 roll
School ratings (A+ to F) from HJN community data.
Key Biscayne K-8 Center
PK-5 · Regular · Dade County School District
884 students · 18.0:1 student–teacher
Key Biscayne Presbyterian School
PK-1 · Regular
29 students · 6.6:1 student–teacher
St Christophers
PK-6 · Montessori
215 students · 24.4:1 student–teacher
St Agnes Academy
PK-8 · Regular
434 students · 13.4:1 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
La Prima Casa Montessori
PK-KG · Montessori
2 students · 1.0:1 student–teacher
Ransom Everglades School
6-12 · Regular
1,121 students · 9.4:1 student–teacher
BeachesMLSMIAMI REALTORS MLSSome properties which appear for sale on this web site may subsequently have sold or may no longer be available.
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 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.
86$5,490,000
4 bd · 6 ba · 3,581 sqft
799 Crandon Blvd 202, Key Biscayne, FL
Victor Florencio Sanchez · Ocean Club Realty, Inc.
59$8,000,000
6 bd · 6 ba · 1,044 sqft
544 Warren Ln, Key Biscayne, FL
James Duncan · Duncan Studio Real Estate Division PLLC
22$8,500,000
6 bd · 7 ba · 4,190 sqft
238 Buttonwood Dr, Key Biscayne, FL
Fernanda Moreno · Douglas Elliman
Within 2 miles of this home: 15 restaurants and cafés, 1 grocery store, 11 parks and green spaces, and 17+ transit stops.
Place data from OpenStreetMap.
Panna
Crandon Boulevard
El Gran Inka
Peruvian restaurant · Crandon Boulevard
Sushi Siam
Craft Key Biscayne
American restaurant · Crandon Boulevard
Novecento
Argentinian restaurant · Crandon Boulevard
Narbona
Crandon Boulevard
Pita Pockets KB
Lebanese restaurant · Crandon Boulevard
Origin Asian Bistro and Sushi
Winn-Dixie
Crandon Boulevard
Harbor Park
Harbor Drive
Hampton Park
Paradise Park
Crandon Boulevard
Key Biscayne Village Green Playgound
Village Green
Lake Daniela
Crandon Park Beach
Mangrove Wetlands
Harbor Drive & West McIntyre Street
Harbor Drive & Harbor Lane
Harbor Drive & Westwood Drive
Harbor Drive & West Heather Drive
Harbor Drive & West Mashta Drive
Crandon Boulevard & West Enid Drive
Crandon Boulevard & East Enid Drive
Harbor Drive & Harbor Court