18915 Santa Maria Ave is a 1,185 square foot house on a 5,096 square foot lot with 3 bedrooms and 1 bathroom. Based on Redfin's Castro Valley data, we estimate the home's value is $943,163.
Single-familyProperty Type
1948Year Built
5,096 sq ftLot Size
$796Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$943,163
$8,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 12.2% lower than the average sale price ($1.07M) 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
$2,149 (+2.9%)
$72,351 + $38,218
$110,569
2024
$2,087 (+2.7%)
$70,932 + $37,469
$108,401
2023
$2,032 (+2.9%)
$69,541 + $36,734
$106,275
2022
$1,975 (+2.9%)
$66,841 + $35,308
$102,149
2021
$1,918 (+2.5%)
$66,841 + $35,308
$102,149
2020
$1,872 (−1.2%)
$65,531 + $34,616
$100,147
2019
$1,894 (+3.0%)
$64,859 + $34,261
$99,120
2018
$1,839 (+2.8%)
$63,587 + $33,589
$97,176
2017
$1,789 (+5.1%)
$61,118 + $32,285
$93,403
2016
$1,702 (+7.0%)
$61,118 + $32,285
$93,403
2015
$1,591 (+2.8%)
$59,920 + $31,652
$91,572
2014
$1,547 (+2.3%)
$57,864 + $30,566
$88,430
2013
$1,512 (+2.7%)
$57,864 + $30,566
$88,430
2012
$1,472 (+1.5%)
$57,602 + $30,428
$88,030
2011
$1,450 (+0.9%)
$56,473 + $29,831
$86,304
2010
$1,437 (+0.4%)
$55,366 + $29,246
$84,612
2009
$1,431 (+6.1%)
$54,952 + $29,028
$83,980
2008
$1,348
$55,083 + $29,097
$84,180
Tax history for 18915 Santa Maria Ave
Year
Property tax
Land + Additions
Assessment*
2025
$2,149 (+2.9%)
$72,351 + $38,218
$110,569
2024
$2,087 (+2.7%)
$70,932 + $37,469
$108,401
2023
$2,032 (+2.9%)
$69,541 + $36,734
$106,275
2022
$1,975 (+2.9%)
$66,841 + $35,308
$102,149
2021
$1,918 (+2.5%)
$66,841 + $35,308
$102,149
2020
$1,872 (−1.2%)
$65,531 + $34,616
$100,147
2019
$1,894 (+3.0%)
$64,859 + $34,261
$99,120
2018
$1,839 (+2.8%)
$63,587 + $33,589
$97,176
2017
$1,789 (+5.1%)
$61,118 + $32,285
$93,403
2016
$1,702 (+7.0%)
$61,118 + $32,285
$93,403
2015
$1,591 (+2.8%)
$59,920 + $31,652
$91,572
2014
$1,547 (+2.3%)
$57,864 + $30,566
$88,430
2013
$1,512 (+2.7%)
$57,864 + $30,566
$88,430
2012
$1,472 (+1.5%)
$57,602 + $30,428
$88,030
2011
$1,450 (+0.9%)
$56,473 + $29,831
$86,304
2010
$1,437 (+0.4%)
$55,366 + $29,246
$84,612
2009
$1,431 (+6.1%)
$54,952 + $29,028
$83,980
2008
$1,348
$55,083 + $29,097
$84,180
*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
May 15, 2023 • Final
Building
Remodel a single-family home including the conversion of a laundry and nook into a full bathroom, laundry closet, and nook. Replace kitchen cabinets, remodel a hall bathroom and bedroom closets, and re-wire the house with a new electrical panel. Replace the water supply with copper pipes, install a new tankless water heater, and replace windows.
Bathroom
Electrical
Kitchen
Plumbing
Remodel
Jan 24, 2023 • Final
Building
Replace a furnace with a similar unit. Replace eight ducts.
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
Room Information
# of Rooms: 6
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,185
Building Sq. Ft: 1,185
# of Units: 1
# of Stories: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 5,096
Legal Lot Number: 11
Legal Block Number: 1
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.117
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,185
Stories: 1.0
Lot Size: 5,096 square feet
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1948
County: Alameda County
APN: 084D134100800
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
Chabot Elementary School
Public K-5 • Assigned • 0.6mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 1.2mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.3mi
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...