635 Harbor Cir is a 3,572 square foot house on a 0.58 acre lot with 3 bedrooms and 3 bathrooms. - it last sold on June 01, 1977 for $135,000. Based on Redfin's Key Biscayne data, we estimate the home's value is $12,185,201.
Single-familyProperty Type
1979Year Built
0.58 acresLot Size
$3,411Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$12,185,201
$12.1M since sold in June 1977$230K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 112.1% higher than the average sale price ($5.75M) of 6 comparable homes.
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Zoning and permits
Zoning
Permits
VE
Village Estate District
These districts are designed to protect the character of Single Family and Two-Family homes and to regulate Development within the district as relates to neighboring properties and adjacent streets.
Permitted uses
Include but are not limited to:
Housing-Single unit
Apr 12, 2022 • Final
Master building
Install a new wood fence and aluminum picket fence.
Grading
Aug 14, 2020 • Final
Master building
Remove and replace an existing dock.
Remodel
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Exterior
Exterior Information
Construction Type: Concrete Block
Exterior Wall: Cbs/Holw Tile/Fr/Stud/Sheat/Sd
Roof Covering Type: Bahama/Ceramic Tile/Blt-Up Tg
Roof Shape Type: Bahama/Ceramic Tile/Blt-Up Tar and Gravel
Pool Information
Has Pool
Property Information
Subdivision Name: BISCAYNE KEY ESTATES
Living Sq. Ft: 3,572
Adjusted Gross Sq. Ft: 4,277
Building Sq. Ft: 6,306
# of Units: 1
# of Stories: 3
Legal Description: BISCAYNE KEY ESTS PB 50-61 LOT 3 BLK 19 LOT SIZE 25141 SQ FT OR 9731-2367 15691-0376 1092 4 COC 23355-2060 05 2005 4
Lot Information
# of Buildings: 2
Land Sq. Ft: 25,141
Legal Lot Number: 3
Legal Block Number: 19
Municipality Name: KEY BISCAYNE
Acres: 0.5772
Zoning Code: 2000
County Use Description: RES - SINGLE FAMILY : 1 UNIT
State Use Description: SINGLE FAMILY
Location Information
Parcel Location Influence: Waterfront
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 3
Baths: 3.0
Sq. Ft.: 3,572
Stories: 3.0
Lot Size: 0.58 acres
Style: Single Family Residential
Year Built: 1979
Year Renovated: 1989
County: Miami-Dade County
APN: 2452050013250
Home facts updated by county records on Oct 14, 2026
Around this home
Schools
K - 12
Preschool & daycare
Key Biscayne K-8 Center
Public PreK-8 • Assigned • 0.4mi
8/10
Coral Gables Senior High School
Public PreK-12 • Assigned • 6.3mi
5/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
10/10 Flood Factor
Estimated 80%+ chance of a flood reaching the building in the next 30 years
1/10 Fire Factor
Unlikely to be in a wildfire in next 30 years
Heat Factor
We're working on getting current and accurate heat risk information for this home.
10/10 Wind Factor
99% chance of strong winds in next 30 years
2/10 Air Factor
1 unhealthy days expected this year, 1 days in 30 years
Provided by First Street
Historical weather
Key Biscayne, FL • 33149
Average low and high temperatures (°F)
73
63
75
66
77
70
79
74
84
79
86
80
88
82
88
81
86
78
83
78
80
73
77
69
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 9.5 hours in
June and 6.9 hours in December, placing it above the
U.S. average for solar exposure.
9.5 hrs
6.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$11.58M – $14.01M
Reach more buyers when you sell with Redfin. Save up to $121,852 in fees.3 minutes to get started.