OFF MARKET

Off Market Dec 2011 for $1.3M

$2,757,620

Est. refi paymentEst. refi $8,540/mo

•

3,534

sq ft

685 Castle Rock Rd, Walnut Creek, CA 94598

About this home

Single-familyProperty Type

1986Year Built

1.38 acresLot Size

$780Est. Price/Sq.Ft.

3 car garageParking

Listed by Laurie Moore •DRE #01898020 • Alain Pinel REALTORS

Listed by Douglas Moore •DRE #01789388 • Alain Pinel REALTORS

Bought with Melanie Kozak •DRE #00766979 • Alain Pinel REALTORS

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40547480

Redfin Estimate

$2,757,620

$1.4M since sold in December 2011$66K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.6% higher than the average sale price ($2.74M) 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 APR 30, 2026
$2,325,000
C
5 beds3.5 baths3,389 sq ft
2737 Harland Ct, Walnut Creek, CA 94598
SOLD APR 20, 2026
$2,800,000
D
5 beds3.5 baths3,895 sq ft
2648 Comistas Dr, Walnut Creek, CA 94598
BOUGHT WITH REDFIN MAR 26, 2026
$2,750,000
E
5 beds3 baths3,503 sq ft
825 Bertram St, Walnut Creek, CA 94598
SOLD MAY 15, 2026
$2,575,000
F
5 beds3 baths3,480 sq ft
680 Quail Crest Dr, Walnut Creek, CA 94598

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Earn from this home

Sell

$1,889,845

Est. take-home

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Refinance

Est. cash available

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Rent

$7,182/mo

Redfin rental estimate

List your home for rent

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 THU, 4PM TO 7PM
$1,349,995
4 beds2 baths1,807 sq ft
2737 San Antonio Dr, Walnut Creek, CA 94598
OPEN TODAY, 11AM TO 1PM
$1,499,000
3 beds2 baths1,928 sq ft
945 Natchez Dr, Walnut Creek, CA 94598
OPEN TODAY, 11AM TO 1PM
$1,599,000
4 beds3 baths1,970 sq ft
169 Venado Corte, Walnut Creek, CA 94598
OPEN TODAY, 10:30AM TO 1PM
$1,499,999
5 beds2 baths2,018 sq ft
2330 Gill Port Ln, Walnut Creek, CA 94598
OPEN SAT, 1PM TO 4PM
$879,000
2 beds2 baths1,402 sq ft
509 Tampico, Walnut Creek, CA 94598
EARLY ACCESS
$1,250,000
3 beds3 baths2,069 sq ft
1652 Siskiyou Dr, Walnut Creek, CA 94598
$1,999,000
3 beds2 baths1,855 sq ft
1069 Homestead Ave, Walnut Creek, CA 94598
EARLY ACCESS
$2,199,999
4 beds3 baths3,043 sq ft
3318 Cottingham Ct, Walnut Creek, CA 94598
COMING SOON
$725,000
3 beds2 baths1,364 sq ft
1959 Olmo Way, Walnut Creek, CA 94598
COMING SOON
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See all

Provided by Redfin

Sale history for 685 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$20,175 (+2.3%)

$948,064 + $832,758

$1,780,822

2024

$19,716 (+1.6%)

$929,475 + $816,430

$1,745,905

2023

$19,412 (+0.9%)

$911,250 + $800,422

$1,711,672

2022

$19,244 (+2.2%)

$893,383 + $784,728

$1,678,111

2021

$18,829 (+0.7%)

$875,866 + $769,342

$1,645,208

2020

$18,694 (+1.2%)

$858,693 + $754,257

$1,612,950

2019

$18,480 (+3.7%)

$849,889 + $746,524

$1,596,413

2018

$17,821 (+3.2%)

$833,225 + $731,887

$1,565,112

2017

$17,274 (+2.3%)

$800,871 + $703,468

$1,504,339

2016

$16,892 (+0.5%)

$800,871 + $703,468

$1,504,339

2015

$16,805 (+1.1%)

$785,168 + $689,675

$1,474,843

2014

$16,615 (+2.5%)

$758,226 + $666,010

$1,424,236

2013

$16,216 (+1.9%)

$758,226 + $666,010

$1,424,236

2012

$15,913 (+35.0%)

$754,800 + $663,000

$1,417,800

2011

$11,791 (−6.5%)

$740,000 + $650,000

$1,390,000

2010

$12,607 (+0.2%)

$224,768 + $821,232

$1,046,000

2009

$12,586 (+2.6%)

$241,930 + $883,932

$1,125,862

2008

$12,265

$242,505 + $886,032

$1,128,537

Tax history for 685 Castle Rock Rd

Year

Property tax

Land + Additions

Assessment*

2025

$20,175 (+2.3%)

$948,064 + $832,758

$1,780,822

2024

$19,716 (+1.6%)

$929,475 + $816,430

$1,745,905

2023

$19,412 (+0.9%)

$911,250 + $800,422

$1,711,672

2022

$19,244 (+2.2%)

$893,383 + $784,728

$1,678,111

2021

$18,829 (+0.7%)

$875,866 + $769,342

$1,645,208

2020

$18,694 (+1.2%)

$858,693 + $754,257

$1,612,950

2019

$18,480 (+3.7%)

$849,889 + $746,524

$1,596,413

2018

$17,821 (+3.2%)

$833,225 + $731,887

$1,565,112

2017

$17,274 (+2.3%)

$800,871 + $703,468

$1,504,339

2016

$16,892 (+0.5%)

$800,871 + $703,468

$1,504,339

2015

$16,805 (+1.1%)

$785,168 + $689,675

$1,474,843

2014

$16,615 (+2.5%)

$758,226 + $666,010

$1,424,236

2013

$16,216 (+1.9%)

$758,226 + $666,010

$1,424,236

2012

$15,913 (+35.0%)

$754,800 + $663,000

$1,417,800

2011

$11,791 (−6.5%)

$740,000 + $650,000

$1,390,000

2010

$12,607 (+0.2%)

$224,768 + $821,232

$1,046,000

2009

$12,586 (+2.6%)

$241,930 + $883,932

$1,125,862

2008

$12,265

$242,505 + $886,032

$1,128,537

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

Public record

Public record
Zoning
Permits

Beds

Baths

Stories

Lot width

—

Lot depth

—

Lot size

1.38 Acres

Year renovated

2000

Sq. Ft.

3,534

Year built

1985

Style

Single Family Residential

County

Contra Costa County

APN

1391100425

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 13, 2026.

R40

Single-Family Residential District

The purpose of the Single-Family Residential Zoning District is to provide for single-family residential development that is consistent with the General Plan. The intent is to promote and encourage a suitable environment for family life. This would include those conditionally permitted uses that are generally an integral part of single-family residential neighborhoods and that are compatible with residential activities including parks, playgrounds, religious assembly, day care, and schools.

Permitted uses

Include but are not limited to:

Housing-Single unit
Housing-Senior
Infrastructure

Apr 3, 2018 • Final

Solar system - commercial

Work on a solar photovoltaic system.

Electrical

Solar

Mar 21, 2018 • Active

Building revision to issued

Increase the number of solar panels and the system size. Upgrade the electrical circuit amperage.

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

Parking

Parking Information
Has Attached Garage
Garage Spaces: 3
Covered Spaces: 3
Parking Features: Attached, Int Access From Garage, RV/Boat Parking, Side Yard Access, Workshop in Garage, Guest, Garage Door Opener

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 4
# of Bathrooms Full: 3
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Solid Surface, Tile, Updated Baths
Primary Bathroom Included Features: Solid Surface, Stall Shower, Tile, Tub, Updated Baths

Interior Features
Interior Features: Family Room, Kitchen/Family Combo, Office, Breakfast Bar, Stone Counters, Eat-in Kitchen, Kitchen Island, Updated Kitchen, Sound System
Appliances: Dishwasher, Double Oven, Disposal, Gas Range, Plumbed For Ice Maker, Microwave, Range, Refrigerator, Self Cleaning Oven, Gas Water Heater
Laundry Features: 220 Volt Outlet, Hookups Only, Laundry Room
Street Level Features: 5 Bedrooms, 3.5 Baths, Primary Bedrm Suite - 1, Laundry Facility, Main Entry
Window Features: Double Pane Windows
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Breakfast Bar,Counter - Stone,Dishwasher,Double Oven,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Ice Maker Hookup,Island,Microwave,Range/Oven Built-in,Refrigerator,Self-Cleaning Oven,Updated Kitchen
Rooms Total: 15
Fireplace Features: Brick, Family Room, Insert, Gas Starter, Living Room, Wood Burning
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Wood Siding
Building Area Total: 3,534

Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Front Yard, Side Yard, Sprinklers Automatic, Sprinklers Back, Sprinklers Front, Sprinklers Side, Terraced Back
Door Features: Mirrored Closet Door(s)
Roof: Shingle

Pool Information
Pool Features: Gunite, In Ground, Pool Sweep, Solar Heat, Spa
Spa Features: Private
Has Private Pool
Has Spa

Property Information
Living Area: 3534
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1986

Lot Information
Lot Size Square Feet: 60112
Lot Size Area: 1.38
Lot Size Units: Acres
Lot Size Acres: 1.38
Lot Features: Premium Lot, Secluded, Sloped Up

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Zoned
Cooling: Ceiling Fan(s), Zoned

Location

School Information
High School District: Mount Diablo (925) 682-8000

Public facts

Beds: 6
Baths: 4.0
Sq. Ft.: 3,534
Stories: 1.0
Lot Size: 1.38 acres
Style: Single Family Residential
Year Built: 1985
Year Renovated: 2000
County: Contra Costa County
APN: 1391100425

Home facts updated by county records on Jul 13, 2026

Around this home

Schools

Walnut Acres Elementary School

Public K-5 • Assigned • 1.3mi

8/10

Foothill Middle School

Public 6-8 • Assigned • 1.4mi

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

$2.62M – $3.17M

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Home values near 685 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.	$2,949,068
750 Castle Rock Rd, Walnut Creek, CA 3 Beds \| 2 Baths \| 1790 Sq. Ft.	$1,570,844

Address	Redfin Estimate
638 Castle Rock Rd, Walnut Creek, CA 4 Beds \| 4 Baths \| 4033 Sq. Ft.	$2,956,002
825 Castle Rock Rd, Walnut Creek, CA 4 Beds \| 3 Baths \| 4207 Sq. Ft.	$2,560,441

Address	Redfin Estimate
650 Castle Rock Rd, Walnut Creek, CA 4 Beds \| 3 Baths \| 3253 Sq. Ft.	$2,149,876
630 Castle Rock Rd, Walnut Creek, CA 5 Beds \| 5 Baths \| 4241 Sq. Ft.	$2,825,006

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2011. This data may not match . Learn more.

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GreatSchools Ratings provided by GreatSchools.org.

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About this home

Redfin Estimate

Earn from this home

Market trends in 94598, CA

Sale history for 685 Castle Rock Rd

Tax history for 685 Castle Rock Rd

Public record

Property details

Around this home

Schools

Lifestyle

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94598

Home values near 685 Castle Rock Rd

More real estate resources