700 Castle Rock Rd is a 2,312 square foot vacant land on a 4.91 acre lot. Based on Redfin's Walnut Creek data, we estimate the home's value is $659,169.
Vacant landProperty Type
1970Year Built
4.91 acresLot Size
$134,250Price/Acres
2 car garageParking
Source:Public Records
Redfin Estimate
$659,169
$391K since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 31.3% lower than the average sale price ($959K) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40713276
Feb 12, 2016
Listing Removed
—
Year
Property tax
Land + Additions
Assessment*
2026
$3,825 (+2.4%)
$165,015 + $96,247
$261,262
2025
$3,734 (+2.5%)
$165,015 + $96,247
$261,262
2024
$3,642 (+1.9%)
$161,780 + $94,360
$256,140
2023
$3,574 (+0.9%)
$158,608 + $92,510
$251,118
2022
$3,543 (+2.5%)
$155,499 + $90,697
$246,196
2021
$3,457 (+2.1%)
$152,450 + $88,919
$241,369
2020
$3,384 (+0.9%)
$149,461 + $87,176
$236,637
2019
$3,353 (+3.8%)
$147,929 + $86,283
$234,212
2018
$3,230 (+3.6%)
$145,029 + $84,592
$229,621
2017
$3,118 (+8.1%)
$139,399 + $81,308
$220,707
2016
$2,884 (+0.9%)
$139,399 + $81,308
$220,707
2015
$2,859 (−0.2%)
$136,666 + $79,714
$216,380
2014
$2,866 (+6.1%)
$131,978 + $76,979
$208,957
2013
$2,702 (+2.8%)
$131,978 + $76,979
$208,957
2012
$2,628 (+4.3%)
$131,382 + $76,632
$208,014
2011
$2,519 (+2.0%)
$128,806 + $75,130
$203,936
2010
$2,469 (+0.3%)
$126,281 + $73,657
$199,938
2009
$2,462 (+2.4%)
$125,338 + $73,107
$198,445
2008
$2,405
$125,636 + $73,281
$198,917
Tax history for 700 Castle Rock Rd
Year
Property tax
Land + Additions
Assessment*
2026
$3,825 (+2.4%)
$165,015 + $96,247
$261,262
2025
$3,734 (+2.5%)
$165,015 + $96,247
$261,262
2024
$3,642 (+1.9%)
$161,780 + $94,360
$256,140
2023
$3,574 (+0.9%)
$158,608 + $92,510
$251,118
2022
$3,543 (+2.5%)
$155,499 + $90,697
$246,196
2021
$3,457 (+2.1%)
$152,450 + $88,919
$241,369
2020
$3,384 (+0.9%)
$149,461 + $87,176
$236,637
2019
$3,353 (+3.8%)
$147,929 + $86,283
$234,212
2018
$3,230 (+3.6%)
$145,029 + $84,592
$229,621
2017
$3,118 (+8.1%)
$139,399 + $81,308
$220,707
2016
$2,884 (+0.9%)
$139,399 + $81,308
$220,707
2015
$2,859 (−0.2%)
$136,666 + $79,714
$216,380
2014
$2,866 (+6.1%)
$131,978 + $76,979
$208,957
2013
$2,702 (+2.8%)
$131,978 + $76,979
$208,957
2012
$2,628 (+4.3%)
$131,382 + $76,632
$208,014
2011
$2,519 (+2.0%)
$128,806 + $75,130
$203,936
2010
$2,469 (+0.3%)
$126,281 + $73,657
$199,938
2009
$2,462 (+2.4%)
$125,338 + $73,107
$198,445
2008
$2,405
$125,636 + $73,281
$198,917
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Dec 3, 2025 • Active
Building/residential/al/alteration
Replace existing aluminum single-pane windows and patio doors with new vinyl dual-pane units. The installation will be like-for-like with no changes to the size of the openings.
Remodel
Aug 29, 2025 • Final
Building - residential re-roof
Remove the existing roof and install new roofing materials, including underlayment, flashing, and asphalt shingles. A cool roof or cool roof exception is required at the final inspection.
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
Exterior
Property Information
Living Sq. Ft: 2,312
Ground Floor Sq. Ft: 2,312
Building Sq. Ft: 2,312
# of Stories: 1
Legal Description: RO SAN MIGUEL POR PLATT GREGORY TR
Lot Information
# of Buildings: 1
Land Sq. Ft: 213,880
Acres: 4.91
Zoning Code: A-2
County Use Description: RURAL RESID 1-10 AC
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: —
Baths: —
Sq. Ft.: 2,312
Stories: 1.0
Lot Size: 4.91 acres
Style: Vacant Land
Year Built: 1970
Year Renovated: 1970
County: Contra Costa County
APN: 1381500055
Home facts updated by county records on Oct 30, 2026
Around this home
Schools
Walnut Acres Elementary School
Public K-5 • Assigned • 1.4mi
8/10
Foothill Middle School
Public 6-8 • Assigned • 1.4mi
9/10
Northgate High School
Public 9-12 • Assigned • 0.4mi
9/10
Provided by GreatSchools
Lifestyle
Provided by Walk Score and Local Logic
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
5/10 Fire Factor
7% chance of being in a wildfire in next 30 years
4/10 Heat Factor
7 days above 95° expected this year, 15 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
9/10 Air Factor
17 unhealthy days expected this year, 17 days in 30 years
Provided by First Street
Historical weather
Walnut Creek, CA • 94598
Average low and high temperatures (°F)
61
40
64
43
72
47
72
49
79
53
84
57
86
59
90
59
85
61
79
54
64
46
57
44
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
In this area, properties receive around 11.5 hours in
June and 4.9 hours in December, placing it above the
U.S. average for solar exposure.
11.5 hrs
4.9 hrs
JuneDecember
Provided by Shadowmap
Estimated sale price
$627,000 – $759,000
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