20173 Center St is a 1,340 square foot house on a 5,000 square foot lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Castro Valley data, we estimate the home's value is $888,318.
Single-familyProperty Type
1957Year Built
5,000 sq ftLot Size
$663Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$888,318
$5,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 16.4% lower than the average sale price ($1.06M) 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
$2,831 (+2.8%)
$91,508 + $85,165
$176,673
2024
$2,754 (+2.4%)
$89,713 + $83,496
$173,209
2023
$2,689 (+2.7%)
$87,954 + $81,858
$169,812
2022
$2,619 (+2.9%)
$84,539 + $78,680
$163,219
2021
$2,545 (+2.5%)
$84,539 + $78,680
$163,219
2020
$2,483 (−1.3%)
$82,882 + $77,137
$160,019
2019
$2,516 (+3.0%)
$82,032 + $76,347
$158,379
2018
$2,442 (+2.8%)
$80,424 + $74,850
$155,274
2017
$2,375 (+5.2%)
$77,301 + $71,944
$149,245
2016
$2,258 (+7.0%)
$77,301 + $71,944
$149,245
2015
$2,110 (+2.4%)
$75,786 + $70,533
$146,319
2014
$2,060 (+1.8%)
$73,186 + $68,113
$141,299
2013
$2,024 (+2.6%)
$73,186 + $68,113
$141,299
2012
$1,973 (+1.5%)
$72,855 + $67,806
$140,661
2011
$1,943 (+0.9%)
$71,427 + $66,476
$137,903
2010
$1,926 (+0.1%)
$70,026 + $65,173
$135,199
2009
$1,924 (+5.2%)
$69,503 + $64,686
$134,189
2008
$1,828
$69,668 + $64,840
$134,508
Tax history for 20173 Center St
Year
Property tax
Land + Additions
Assessment*
2025
$2,831 (+2.8%)
$91,508 + $85,165
$176,673
2024
$2,754 (+2.4%)
$89,713 + $83,496
$173,209
2023
$2,689 (+2.7%)
$87,954 + $81,858
$169,812
2022
$2,619 (+2.9%)
$84,539 + $78,680
$163,219
2021
$2,545 (+2.5%)
$84,539 + $78,680
$163,219
2020
$2,483 (−1.3%)
$82,882 + $77,137
$160,019
2019
$2,516 (+3.0%)
$82,032 + $76,347
$158,379
2018
$2,442 (+2.8%)
$80,424 + $74,850
$155,274
2017
$2,375 (+5.2%)
$77,301 + $71,944
$149,245
2016
$2,258 (+7.0%)
$77,301 + $71,944
$149,245
2015
$2,110 (+2.4%)
$75,786 + $70,533
$146,319
2014
$2,060 (+1.8%)
$73,186 + $68,113
$141,299
2013
$2,024 (+2.6%)
$73,186 + $68,113
$141,299
2012
$1,973 (+1.5%)
$72,855 + $67,806
$140,661
2011
$1,943 (+0.9%)
$71,427 + $66,476
$137,903
2010
$1,926 (+0.1%)
$70,026 + $65,173
$135,199
2009
$1,924 (+5.2%)
$69,503 + $64,686
$134,189
2008
$1,828
$69,668 + $64,840
$134,508
*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
R1
Single-Family Residence Districts
Single-family residence districts, hereinafter designated as R-1 districts, are established to provide for and protect established neighborhoods of one-family dwellings, and to provide space in suitable locations for additional development of this kind, together with appropriate community facilities and allowance for restricted interim cultivation of the soil compatible with such low-density residential development.
Permitted uses
Include but are not limited to:
Housing-Single unit
Agriculture-Cropland
Agriculture-Grove / orchard
Oct 25, 2019 • Final
Building
Tear off and replace the roof on a single-family home with composition shingles.
Roofing
Jan 29, 1996 • Final
Building
Replace the central furnace in a residential building.
HVAC
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
Heating & Cooling
Heating Type: Forced Air
Fireplace Information
# of Fireplaces: 1
Has Fireplace
Room Information
# of Rooms: 5
Exterior
Exterior Information
Physical Condition: Average
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Average
Exterior Wall: Stucco
Building Type: Detached
Property Information
Living Sq. Ft: 1,340
Building Sq. Ft: 1,340
# of Units: 1
# of Stories: 1
Parking & Garage Information
# of Parking Spaces: 2
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,000
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.1148
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Utility Information
Sewer Type: Public
Water Service Type: Public
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,340
Stories: 1.0
Lot Size: 5,000 square feet
Style: Single Family Residential
Year Built: 1957
Year Renovated: 1958
County: Alameda County
APN: 084C066907602
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
Marshall Elementary School
Public K-5 • Assigned • 0.3mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 0.2mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.9mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Castro Valley remains a highly competitive market. On average, homes are selling for 103.7% of their asking price, with nearly 60% of properties closing above list price.
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...