18843 Sandy Rd is a 1,369 square foot house on a 9,676 square foot lot with 2 bedrooms and 1 bathroom. Based on Redfin's Castro Valley data, we estimate the home's value is $1,037,859.
Single-familyProperty Type
1947Year Built
9,676 sq ftLot Size
$758Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,037,859
$3,000 since July
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 6.1% lower than the average sale price ($1.11M) 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
$5,506 (+69.1%)
$122,781 + $277,121
$399,902
2024
$3,257 (+2.3%)
$122,781 + $277,121
$399,902
2023
$3,185 (+2.5%)
$120,374 + $92,079
$212,453
2022
$3,107 (+2.8%)
$115,701 + $88,504
$204,205
2021
$3,021 (+2.4%)
$115,701 + $88,504
$204,205
2020
$2,949 (−1.4%)
$113,432 + $86,769
$200,201
2019
$2,991 (+3.0%)
$112,270 + $85,880
$198,150
2018
$2,904 (+2.8%)
$110,069 + $84,196
$194,265
2017
$2,825 (+5.2%)
$105,796 + $80,927
$186,723
2016
$2,686 (+7.0%)
$105,796 + $80,927
$186,723
2015
$2,510 (+2.1%)
$103,721 + $79,340
$183,061
2014
$2,458 (+1.6%)
$100,163 + $76,618
$176,781
2013
$2,420 (+2.4%)
$100,163 + $76,618
$176,781
2012
$2,362 (+1.5%)
$99,710 + $76,272
$175,982
2011
$2,328 (+0.8%)
$97,755 + $74,777
$172,532
2010
$2,308
$95,838 + $73,311
$169,149
2009
$2,308 (+4.7%)
$95,122 + $72,763
$167,885
2008
$2,204
$95,348 + $72,936
$168,284
Tax history for 18843 Sandy Rd
Year
Property tax
Land + Additions
Assessment*
2025
$5,506 (+69.1%)
$122,781 + $277,121
$399,902
2024
$3,257 (+2.3%)
$122,781 + $277,121
$399,902
2023
$3,185 (+2.5%)
$120,374 + $92,079
$212,453
2022
$3,107 (+2.8%)
$115,701 + $88,504
$204,205
2021
$3,021 (+2.4%)
$115,701 + $88,504
$204,205
2020
$2,949 (−1.4%)
$113,432 + $86,769
$200,201
2019
$2,991 (+3.0%)
$112,270 + $85,880
$198,150
2018
$2,904 (+2.8%)
$110,069 + $84,196
$194,265
2017
$2,825 (+5.2%)
$105,796 + $80,927
$186,723
2016
$2,686 (+7.0%)
$105,796 + $80,927
$186,723
2015
$2,510 (+2.1%)
$103,721 + $79,340
$183,061
2014
$2,458 (+1.6%)
$100,163 + $76,618
$176,781
2013
$2,420 (+2.4%)
$100,163 + $76,618
$176,781
2012
$2,362 (+1.5%)
$99,710 + $76,272
$175,982
2011
$2,328 (+0.8%)
$97,755 + $74,777
$172,532
2010
$2,308
$95,838 + $73,311
$169,149
2009
$2,308 (+4.7%)
$95,122 + $72,763
$167,885
2008
$2,204
$95,348 + $72,936
$168,284
*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
Feb 24, 2025 • Final
Building
Construct a single-family home addition and perform a remodel at the rear of the residence. The project includes expanding the kitchen and creating a new family room, bathroom, and bedroom, as well as remodeling the existing kitchen.
Addition
Bathroom
Kitchen
Jul 6, 2023 • Final
Building
Install a roof-mounted solar photovoltaic system on a residential building.
Electrical
Solar
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: L-Shape
Construction Type: Wood
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,369
Building Sq. Ft: 1,369
# of Units: 1
# of Stories: 1
Legal Description: TRACT 733 BLK B LOT 21
Lot Information
# of Buildings: 1
Land Sq. Ft: 9,676
Legal Lot Number: 21
Legal Block Number: B
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.2221
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Financial
Assessor Information
Assessment Year: 2025
Public facts
Beds: 2
Baths: 1.0
Sq. Ft.: 1,369
Stories: 1.0
Lot Size: 9,676 square feet
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1947
County: Alameda County
APN: 084C081600400
Home facts updated by county records on Jul 27, 2026
Around this home
Schools
Proctor Elementary School
Public K-5 • Assigned • 0.7mi
9/10
Creekside Middle School
Public 6-8 • Assigned • 0.7mi
10/10
Castro Valley High School
Public 9-12 • Assigned • 0.6mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
Castro Valley's late-summer market shows a clear split. While median prices hold near $1.2M, increased inventory gives buyers leverage on older properties. However, immaculate homes still go pending in under 15 days. A strong, clean offer is key!
Strong buyer demand keeps the Castro Valley market moving incredibly fast. With homes frequently selling above their $1.2 million median price, decisive action is essential. To win here, buyers need to submit competitive offers quickly and minimize...