17666 Rockhurst Rd is a 1,693 square foot house on a 6,882 square foot lot with 3 bedrooms and 2 bathrooms. Based on Redfin's Castro Valley data, we estimate the home's value is $1,102,154.
Single-familyProperty Type
1970Year Built
6,882 sq ftLot Size
$651Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$1,102,154
$24K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 11.6% lower than the average sale price ($1.25M) 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
$2,239 (+3.0%)
$44,514 + $81,026
$125,540
2024
$2,174 (+2.7%)
$43,641 + $79,437
$123,078
2023
$2,117 (+2.9%)
$42,786 + $77,880
$120,666
2022
$2,056 (+3.0%)
$41,124 + $74,856
$115,980
2021
$1,996 (+2.5%)
$41,124 + $74,856
$115,980
2020
$1,947 (−1.1%)
$40,318 + $73,388
$113,706
2019
$1,969 (+3.1%)
$39,905 + $72,636
$112,541
2018
$1,910 (+2.9%)
$39,122 + $71,212
$110,334
2017
$1,856 (+5.2%)
$37,603 + $68,447
$106,050
2016
$1,764 (+7.0%)
$37,603 + $68,447
$106,050
2015
$1,649 (+2.9%)
$36,866 + $67,105
$103,971
2014
$1,602 (+2.2%)
$35,601 + $64,802
$100,403
2013
$1,567 (+2.8%)
$35,601 + $64,802
$100,403
2012
$1,525 (+1.6%)
$35,440 + $64,510
$99,950
2011
$1,501 (+1.0%)
$34,745 + $63,245
$97,990
2010
$1,486 (+0.4%)
$34,064 + $62,005
$96,069
2009
$1,481 (+6.1%)
$33,810 + $61,542
$95,352
2008
$1,395
$33,890 + $61,688
$95,578
Tax history for 17666 Rockhurst Rd
Year
Property tax
Land + Additions
Assessment*
2025
$2,239 (+3.0%)
$44,514 + $81,026
$125,540
2024
$2,174 (+2.7%)
$43,641 + $79,437
$123,078
2023
$2,117 (+2.9%)
$42,786 + $77,880
$120,666
2022
$2,056 (+3.0%)
$41,124 + $74,856
$115,980
2021
$1,996 (+2.5%)
$41,124 + $74,856
$115,980
2020
$1,947 (−1.1%)
$40,318 + $73,388
$113,706
2019
$1,969 (+3.1%)
$39,905 + $72,636
$112,541
2018
$1,910 (+2.9%)
$39,122 + $71,212
$110,334
2017
$1,856 (+5.2%)
$37,603 + $68,447
$106,050
2016
$1,764 (+7.0%)
$37,603 + $68,447
$106,050
2015
$1,649 (+2.9%)
$36,866 + $67,105
$103,971
2014
$1,602 (+2.2%)
$35,601 + $64,802
$100,403
2013
$1,567 (+2.8%)
$35,601 + $64,802
$100,403
2012
$1,525 (+1.6%)
$35,440 + $64,510
$99,950
2011
$1,501 (+1.0%)
$34,745 + $63,245
$97,990
2010
$1,486 (+0.4%)
$34,064 + $62,005
$96,069
2009
$1,481 (+6.1%)
$33,810 + $61,542
$95,352
2008
$1,395
$33,890 + $61,688
$95,578
*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
Jun 14, 2012 • Final
Building
Remove and replace a water heater.
Plumbing
Water heater
Oct 4, 2002 • Final
Building
Tear off existing wood shakes and install new oriented strand board and composition shingles.
Roofing
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: 7
Exterior
Exterior Information
Building Style Type: U-Shape
Construction Type: Wood
Building Construction Quality: Good
Property Information
Living Sq. Ft: 1,693
Building Sq. Ft: 1,693
# of Units: 1
# of Stories: 1
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,882
Legal Lot Number: B
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.158
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,693
Stories: 1.0
Lot Size: 6,882 square feet
Style: Single Family Residential
Year Built: 1970
Year Renovated: 1970
County: Alameda County
APN: 084C095500809
Home facts updated by county records on Sep 17, 2026
Around this home
Schools
K - 12
Preschool & daycare
Proctor Elementary School
Public K-5 • Assigned • 0.3mi
9/10
Canyon Middle School
Public 6-8 • Assigned • 1.2mi
7/10
Castro Valley High School
Public 9-12 • Assigned • 1.0mi
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...