3945 Forest Cir is a 1,577 square foot townhouse on a 1,500 square foot lot with 3 bedrooms and 4 bathrooms. Based on Redfin's Castro Valley data, we estimate the home's value is $870,756.
TownhomeProperty Type
2009Year Built
1,500 sq ftLot Size
$552Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$870,756
$16K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 3.1% lower than the average sale price ($898K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$6,833 (+2.4%)
$156,799 + $365,866
$522,665
2024
$6,675 (+1.8%)
$153,725 + $358,693
$512,418
2023
$6,559 (+2.1%)
$150,712 + $351,662
$502,374
2022
$6,425 (+2.7%)
$144,861 + $338,009
$482,870
2021
$6,258 (+2.4%)
$144,861 + $338,009
$482,870
2020
$6,113 (−1.7%)
$142,021 + $331,384
$473,405
2019
$6,220 (+2.9%)
$140,566 + $327,988
$468,554
2018
$6,043 (+2.7%)
$137,810 + $321,558
$459,368
2017
$5,883 (+5.1%)
$132,460 + $309,074
$441,534
2016
$5,596 (+7.0%)
$132,460 + $309,074
$441,534
2015
$5,230 (+1.4%)
$129,864 + $303,016
$432,880
2014
$5,159 (+9.6%)
$125,409 + $292,623
$418,032
2013
$4,708 (+2.8%)
$125,409 + $292,623
$418,032
2012
$4,581 (−2.8%)
$114,000 + $266,000
$380,000
2011
$4,713 (−3.9%)
$111,000 + $259,000
$370,000
2010
$4,904 (+51.2%)
$114,000 + $266,000
$380,000
2009
$3,244 (+241.2%)
$119,100 + $277,900
$397,000
2008
$951
$97,382 + $170,000
$267,382
Tax history for 3945 Forest Cir
Year
Property tax
Land + Additions
Assessment*
2025
$6,833 (+2.4%)
$156,799 + $365,866
$522,665
2024
$6,675 (+1.8%)
$153,725 + $358,693
$512,418
2023
$6,559 (+2.1%)
$150,712 + $351,662
$502,374
2022
$6,425 (+2.7%)
$144,861 + $338,009
$482,870
2021
$6,258 (+2.4%)
$144,861 + $338,009
$482,870
2020
$6,113 (−1.7%)
$142,021 + $331,384
$473,405
2019
$6,220 (+2.9%)
$140,566 + $327,988
$468,554
2018
$6,043 (+2.7%)
$137,810 + $321,558
$459,368
2017
$5,883 (+5.1%)
$132,460 + $309,074
$441,534
2016
$5,596 (+7.0%)
$132,460 + $309,074
$441,534
2015
$5,230 (+1.4%)
$129,864 + $303,016
$432,880
2014
$5,159 (+9.6%)
$125,409 + $292,623
$418,032
2013
$4,708 (+2.8%)
$125,409 + $292,623
$418,032
2012
$4,581 (−2.8%)
$114,000 + $266,000
$380,000
2011
$4,713 (−3.9%)
$111,000 + $259,000
$370,000
2010
$4,904 (+51.2%)
$114,000 + $266,000
$380,000
2009
$3,244 (+241.2%)
$119,100 + $277,900
$397,000
2008
$951
$97,382 + $170,000
$267,382
*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
PD
Planned Development District
Planned development districts, hereinafter designated as PD districts, are established to encourage the arrangement of a compatible variety of uses on suitable lands in such a manner that the resulting development will: be in accord with the policies of the General Plan of the county; provide efficient use of the land that includes preservation of significant open areas and natural and topographic landscape features with minimum alteration of natural land forms; provide an environment that will encourage the use of common open areas for neighborhood or community activities and other amenities; be compatible with and enhance the development of the general area; and create an attractive, efficient and safe environment.
Oct 20, 2017 • Final
Building
New construction
Jun 5, 2009 • Final
Building
New construction
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
Interior
Room Information
# of Rooms: 5
Exterior
Exterior Information
Building Style Type: Rectangular Design
Construction Type: Wood
Building Construction Quality: Good
Property Information
Living Sq. Ft: 1,577
Building Sq. Ft: 1,577
# of Units: 1
# of Stories: 3
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 1,500
Legal Lot Number: 22
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.0344
County Use Description: PLANNED DEVELOPMENT - TOWNHOUS
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 4.0
Sq. Ft.: 1,577
Stories: 3.0
Lot Size: 1,500 square feet
Style: Townhouse
Year Built: 2009
Year Renovated: 2009
County: Alameda County
APN: 084C107102500
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
Marshall Elementary School
Public K-5 • Assigned • 0.2mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 0.5mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.7mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Castro Valley's fall market offers great buyer leverage. While median prices hold steady around $1.2M, increased inventory gives you room to negotiate on homes needing updates. Turnkey properties still move fast in under 15 days, so act quickly with...