825 Castle Rock Rd is a 4,207 square foot house on a 3.18 acre lot with 4 bedrooms and 3 bathrooms. Based on Redfin's Walnut Creek data, we estimate the home's value is $2,560,441.
Single-familyProperty Type
1997Year Built
3.18 acresLot Size
$609Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$2,560,441
$219K since August
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 20.1% lower than the average sale price ($3.21M) 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
$12,615 (+1.7%)
$321,144 + $769,082
$1,090,226
2024
$12,399 (+1.6%)
$314,848 + $754,002
$1,068,850
2023
$12,202 (+0.9%)
$308,675 + $739,218
$1,047,893
2022
$12,097 (+2.2%)
$302,623 + $724,724
$1,027,347
2021
$11,831 (+0.9%)
$296,690 + $710,514
$1,007,204
2020
$11,724 (+1.1%)
$290,873 + $696,583
$987,456
2019
$11,592 (+3.7%)
$287,891 + $689,441
$977,332
2018
$11,176 (+3.2%)
$282,247 + $675,923
$958,170
2017
$10,827 (+2.4%)
$271,288 + $649,677
$920,965
2016
$10,578 (+0.6%)
$271,288 + $649,677
$920,965
2015
$10,512 (+1.3%)
$265,969 + $636,939
$902,908
2014
$10,382 (+2.5%)
$256,843 + $615,083
$871,926
2013
$10,124 (+2.8%)
$256,843 + $615,083
$871,926
2012
$9,848 (+3.9%)
$255,683 + $612,304
$867,987
2011
$9,483 (+1.2%)
$250,670 + $600,299
$850,969
2010
$9,368 (+0.3%)
$245,755 + $588,529
$834,284
2009
$9,336 (+2.6%)
$243,919 + $584,131
$828,050
2008
$9,100
$244,499 + $585,519
$830,018
Tax history for 825 Castle Rock Rd
Year
Property tax
Land + Additions
Assessment*
2025
$12,615 (+1.7%)
$321,144 + $769,082
$1,090,226
2024
$12,399 (+1.6%)
$314,848 + $754,002
$1,068,850
2023
$12,202 (+0.9%)
$308,675 + $739,218
$1,047,893
2022
$12,097 (+2.2%)
$302,623 + $724,724
$1,027,347
2021
$11,831 (+0.9%)
$296,690 + $710,514
$1,007,204
2020
$11,724 (+1.1%)
$290,873 + $696,583
$987,456
2019
$11,592 (+3.7%)
$287,891 + $689,441
$977,332
2018
$11,176 (+3.2%)
$282,247 + $675,923
$958,170
2017
$10,827 (+2.4%)
$271,288 + $649,677
$920,965
2016
$10,578 (+0.6%)
$271,288 + $649,677
$920,965
2015
$10,512 (+1.3%)
$265,969 + $636,939
$902,908
2014
$10,382 (+2.5%)
$256,843 + $615,083
$871,926
2013
$10,124 (+2.8%)
$256,843 + $615,083
$871,926
2012
$9,848 (+3.9%)
$255,683 + $612,304
$867,987
2011
$9,483 (+1.2%)
$250,670 + $600,299
$850,969
2010
$9,368 (+0.3%)
$245,755 + $588,529
$834,284
2009
$9,336 (+2.6%)
$243,919 + $584,131
$828,050
2008
$9,100
$244,499 + $585,519
$830,018
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Permits
Feb 16, 2024 • Final
Building - residential ess/battery storage
Install new Tesla AC Powerwall batteries, a Tesla gateway, a remote power off switch, and a heat alarm.
Battery
Electrical
Apr 29, 2019 • Final
Building - residential electrical
Install an air conditioning disconnect for an existing solar system to meet utility requirements.
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: 11
Exterior
Pool Information
Has Pool
Property Information
Living Sq. Ft: 4,207
Ground Floor Sq. Ft: 2,123
Building Sq. Ft: 4,207
# of Stories: 2
Legal Description: PARCEL MAP 8 PG 19 PCL A
Parking & Garage Information
Garage/Parking Sq. Ft: 781
Lot Information
# of Buildings: 1
Land Sq. Ft: 138,390
Acres: 3.177
Zoning Code: A-2
County Use Description: SINGLE FAMILY
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 4
Baths: 3.0
Sq. Ft.: 4,207
Stories: 2.0
Lot Size: 3.18 acres
Style: Single Family Residential
Year Built: 1997
Year Renovated: 1998
County: Contra Costa County
APN: 1392900039
Home facts updated by county records on Jul 13, 2026
Around this home
Schools
Walnut Acres Elementary School
Public K-5 • Assigned • 1.5mi
8/10
Foothill Middle School
Public 6-8 • Assigned • 1.5mi
9/10
Northgate High School
Public 9-12 • Assigned • 0.5mi
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
6/10 Fire Factor
8% 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
83
57
90
59
86
59
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
$2.43M – $2.95M
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