Google street view image for 638 Castle Rock Rd, Walnut Creek, CA 94598

Off Market Nov 2002 for $1.3M

$2,956,002

Est. refi paymentEst. refi $8,133/mo

•

4 ba

•

4,033

sq ft

638 Castle Rock Rd, Walnut Creek, CA 94598

About this home

638 Castle Rock Rd is a 4,033 square foot house on a 0.88 acre lot with 4 bedrooms and 4 bathrooms. - it last sold on November 06, 2002 for $1,399,000. Based on Redfin's Walnut Creek data, we estimate the home's value is $2,956,002.

Single-familyProperty Type

1988Year Built

0.88 acresLot Size

$733Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$2,956,002

$1.6M since sold in November 2002$2,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.8% higher than the average sale price ($2.62M) of 6 comparable homes.

SOLD JUL 15, 2026
$3,500,000
A
4 beds3.5 baths3,800 sq ft
39 Comistas Ct, Walnut Creek, CA 94598
SOLD JUN 18, 2026
$2,500,000
B
4 beds3.5 baths4,256 sq ft
165 Pine Creek Rd, Walnut Creek, CA 94598
SOLD MAY 12, 2026
$2,700,000
C
4 beds3 baths3,725 sq ft
4155 Arbolado Dr, Walnut Creek, CA 94598
SOLD JUL 8, 2026
$2,405,000
D
4 beds3 baths2,993 sq ft
4075 Arbolado Dr, Walnut Creek, CA 94598
SOLD AUG 19, 2026
$2,300,000
E
4 beds3 baths3,602 sq ft
471 Silver Hollow Dr, Walnut Creek, CA 94598
SOLD DEC 16, 2025
$2,325,000
F
4 beds3.5 baths3,804 sq ft
788 Woodwind Pl, Walnut Creek, CA 94598

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Earn from this home

Sell

$2,453,812

Est. take-home

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Refinance

Est. cash available

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Rent

$7,876/mo

Redfin rental estimate

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Market trends in 94598, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

101.5%

0.0% MoM

Median sale price

$1.5M

$43K MoM

Avg. days on market

16d

1 days MoM

Recently sold homes

2 MoM

New listings for sale

OPEN SUN, 1PM TO 4PM
$1,699,000
5 beds2.5 baths2,475 sq ft
3629 Perada Dr, Walnut Creek, CA 94598
OPEN SAT, 2PM TO 4PM
$1,250,000
3 beds2.5 baths2,069 sq ft
1652 Siskiyou Dr, Walnut Creek, CA 94598
OPEN SAT, 3PM TO 5PM
$1,399,000
3 beds2.5 baths1,864 sq ft
2973 Mi Elana Cir, Walnut Creek, CA 94598
OPEN SAT, 1PM TO 4PM
$1,075,000
3 beds2.5 baths1,898 sq ft
2031 Julius Ct, Walnut Creek, CA 94598
$815,000
3 beds2.5 baths1,568 sq ft
1731 Candelero Ct, Walnut Creek, CA 94598
OPEN SAT, 1PM TO 3PM
$1,448,000
4 beds5 baths2,958 sq ft
1299 Sheppard Ct, Walnut Creek, CA 94598
OPEN THU, 4PM TO 7PM
$1,349,995
4 beds2 baths1,807 sq ft
2737 San Antonio Dr, Walnut Creek, CA 94598
OPEN SAT, 1PM TO 4PM
$1,499,000
3 beds2 baths1,928 sq ft
945 Natchez Dr, Walnut Creek, CA 94598
OPEN SAT, 1PM TO 4PM
$1,599,000
4 beds3 baths1,970 sq ft
169 Venado Corte, Walnut Creek, CA 94598
OPEN SAT, 2PM TO 4PM
$1,499,999
5 beds2 baths2,018 sq ft
2330 Gill Port Ln, Walnut Creek, CA 94598
See all

Provided by Redfin

Sale history for 638 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$23,719 (+2.3%)

$847,961 + $1,267,509

$2,115,470

2024

$23,179 (+1.6%)

$831,335 + $1,242,656

$2,073,991

2023

$22,822 (+0.9%)

$815,035 + $1,218,291

$2,033,326

2022

$22,624 (+2.2%)

$799,054 + $1,194,403

$1,993,457

2021

$22,136 (−48.8%)

$783,387 + $1,170,984

$1,954,371

2020

$43,228 (+98.9%)

$768,027 + $1,148,024

$1,916,051

2019

$21,731 (+3.7%)

$760,152 + $1,136,253

$1,896,405

2018

$20,955 (+3.2%)

$745,248 + $1,113,974

$1,859,222

2017

$20,313 (+2.2%)

$716,310 + $1,070,718

$1,787,028

2016

$19,866 (+5.8%)

$716,310 + $1,070,718

$1,787,028

2015

$18,775 (+2.6%)

$702,265 + $1,049,724

$1,751,989

2014

$18,305 (+19.4%)

$648,970 + $932,530

$1,581,500

2013

$15,334 (−1.4%)

$648,970 + $932,530

$1,581,500

2012

$15,552 (+1.8%)

$560,000 + $785,000

$1,345,000

2011

$15,276 (−2.1%)

$559,924 + $804,576

$1,364,500

2010

$15,604 (−4.4%)

$559,924 + $804,576

$1,364,500

2009

$16,324 (−3.6%)

$574,492 + $825,508

$1,400,000

2008

$16,935

$605,269 + $869,731

$1,475,000

Tax history for 638 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$23,719 (+2.3%)

$847,961 + $1,267,509

$2,115,470

2024

$23,179 (+1.6%)

$831,335 + $1,242,656

$2,073,991

2023

$22,822 (+0.9%)

$815,035 + $1,218,291

$2,033,326

2022

$22,624 (+2.2%)

$799,054 + $1,194,403

$1,993,457

2021

$22,136 (−48.8%)

$783,387 + $1,170,984

$1,954,371

2020

$43,228 (+98.9%)

$768,027 + $1,148,024

$1,916,051

2019

$21,731 (+3.7%)

$760,152 + $1,136,253

$1,896,405

2018

$20,955 (+3.2%)

$745,248 + $1,113,974

$1,859,222

2017

$20,313 (+2.2%)

$716,310 + $1,070,718

$1,787,028

2016

$19,866 (+5.8%)

$716,310 + $1,070,718

$1,787,028

2015

$18,775 (+2.6%)

$702,265 + $1,049,724

$1,751,989

2014

$18,305 (+19.4%)

$648,970 + $932,530

$1,581,500

2013

$15,334 (−1.4%)

$648,970 + $932,530

$1,581,500

2012

$15,552 (+1.8%)

$560,000 + $785,000

$1,345,000

2011

$15,276 (−2.1%)

$559,924 + $804,576

$1,364,500

2010

$15,604 (−4.4%)

$559,924 + $804,576

$1,364,500

2009

$16,324 (−3.6%)

$574,492 + $825,508

$1,400,000

2008

$16,935

$605,269 + $869,731

$1,475,000

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Permits

Sep 11, 2025 • Final

Building - residential ess/battery storage

Install a new energy storage system on an existing single-family home.

Battery

Electrical

Aug 23, 2017 • Final

Building - residential re-roof

Remove and replace the roof on a residential building with class A fire-rated composition shingles and install insulation.

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: 11

Exterior

Pool Information
Has Pool

Property Information
Living Sq. Ft: 4,033
Ground Floor Sq. Ft: 2,240
Building Sq. Ft: 4,033
# of Stories: 2
Legal Description: T6631 L6

Parking & Garage Information
Garage/Parking Sq. Ft: 899

Lot Information
# of Buildings: 1
Land Sq. Ft: 38,332
Legal Lot Number: 6
Acres: 0.88
Zoning Code: R-40
County Use Description: SINGLE FAMILY

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 4
Baths: 4.0
Sq. Ft.: 4,033
Stories: 2.0
Lot Size: 0.88 acres
Style: Single Family Residential
Year Built: 1988
Year Renovated: 1998
County: Contra Costa County
APN: 1381410172

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Walnut Acres Elementary School

Public K-5 • Assigned • 1.2mi

8/10

Foothill Middle School

Public 6-8 • Assigned • 1.3mi

9/10

Northgate High School

Public 9-12 • Assigned • 0.3mi

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

6% 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)

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

$2.81M – $3.40M

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New listings for sale in 94598

OPEN SUN, 1PM TO 4PM3D WALKTHROUGH

$1,699,000

5 beds2.5 baths2,475 sq ft

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OPEN SAT, 2PM TO 4PM

$1,250,000

3 beds2.5 baths2,069 sq ft

1652 Siskiyou Dr, Walnut Creek, CA 94598

OPEN SAT, 3PM TO 5PM

$1,399,000

3 beds2.5 baths1,864 sq ft

2973 Mi Elana Cir, Walnut Creek, CA 94598

OPEN SAT, 1PM TO 4PM

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2031 Julius Ct, Walnut Creek, CA 94598

$815,000

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1731 Candelero Ct, Walnut Creek, CA 94598

OPEN SAT, 1PM TO 3PM

$1,448,000

4 beds5 baths2,958 sq ft

1299 Sheppard Ct, Walnut Creek, CA 94598

OPEN THU, 4PM TO 7PM

$1,349,995

4 beds2 baths1,807 sq ft

2737 San Antonio Dr, Walnut Creek, CA 94598

OPEN SAT, 1PM TO 4PM

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3 beds2 baths1,928 sq ft

945 Natchez Dr, Walnut Creek, CA 94598

OPEN SAT, 1PM TO 4PM

$1,599,000

4 beds3 baths1,970 sq ft

169 Venado Corte, Walnut Creek, CA 94598

Home values near 638 Castle Rock Rd

Data from public records.

Address	Redfin Estimate
715 Castle Rock Rd, Walnut Creek, CA 4 Beds \| 3.5 Baths \| 5070 Sq. Ft.	$2,947,910
443 Castle Rock Rd, Walnut Creek, CA 3 Beds \| 2 Baths \| 2546 Sq. Ft.	$2,084,138

Address	Redfin Estimate
650 Castle Rock Rd, Walnut Creek, CA 4 Beds \| 3 Baths \| 3253 Sq. Ft.	$2,149,876
610 Castle Rock Rd, Walnut Creek, CA 5 Beds \| 4 Baths \| 4111 Sq. Ft.	$2,930,004

Address	Redfin Estimate
685 Castle Rock Rd, Walnut Creek, CA 6 Beds \| 3.5 Baths \| 3534 Sq. Ft.	$2,757,620
630 Castle Rock Rd, Walnut Creek, CA 5 Beds \| 5 Baths \| 4241 Sq. Ft.	$2,825,006

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