Google street view image for 3973 Westbury Rd, Castro Valley, CA 94546

Off market jun 2005 for $680K

$1,286,053

Est. refi paymentEst. refi $4,492/mo

•

3 ba

•

2,024

sq ft

3973 Westbury Rd, Castro Valley, CA 94546

About this home

3973 Westbury Rd is a 2,024 square foot house on a 7,150 square foot lot with 3 bedrooms and 3 bathrooms. - it last sold on June 22, 2005 for $680,000. Based on Redfin's Castro Valley data, we estimate the home's value is $1,286,053.

Single-familyProperty Type

1973Year Built

7,150 sq ftLot Size

$635Est. Price/Sq.Ft.

2 car garageParking

Source:Public Records

Redfin Estimate

$1,286,053

$606K since sold in June 2005$26K since October

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 11.1% lower than the average sale price ($1.45M) of 6 comparable homes.

SOLD OCT 16, 2026
$1,430,000
A
3 beds2.5 baths1,834 sq ft
3724 Greenhills Ave, Castro Valley, CA 94546
SOLD BY REDFIN SEP 14, 2026
$1,500,000
B
4 beds3 baths2,205 sq ft
18308 Maffey Dr, Castro Valley, CA 94546
SOLD MAY 18, 2026
$1,438,000
C
4 beds2.5 baths2,113 sq ft
17939 Lamson Rd, Castro Valley, CA 94546
SOLD OCT 19, 2026
$1,370,000
D
4 beds3 baths2,238 sq ft
3060 Todd Ct, Castro Valley, CA 94546
SOLD JUN 10, 2026
$1,468,888
E
4 beds2.5 baths2,086 sq ft
19304 Barclay Rd, Castro Valley, CA 94546
SOLD JUN 12, 2026
$1,475,000
F
3 beds2 baths1,928 sq ft
17880 Apricot Way, Castro Valley, CA 94546

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Earn from this home

Sell

$991,535

Est. take-home

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Est. cash available

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Rent

$4,142/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated October 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-list price

103.4%

0.6% MoM

Median sale price

$1.1M

$823 MoM

Avg. days on market

18d

3 days MoM

Recently sold homes

7 MoM

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See all

Provided by Redfin

Sale history for 3973 Westbury Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,035 (+2.2%)

$290,016 + $682,282

$972,298

2024

$11,771 (+1.6%)

$284,331 + $668,907

$953,238

2023

$11,589 (+1.9%)

$278,757 + $655,795

$934,552

2022

$11,372 (+2.6%)

$267,935 + $630,335

$898,270

2021

$11,083 (−13.8%)

$267,935 + $630,335

$898,270

2020

$12,863 (−1.1%)

$262,682 + $617,977

$880,659

2019

$13,006 (+2.5%)

$259,989 + $611,642

$871,631

2018

$12,691 (+28.1%)

$254,893 + $594,752

$849,645

2017

$9,908 (+8.7%)

$233,100 + $543,900

$777,000

2016

$9,116 (+21.0%)

$233,100 + $543,900

$777,000

2015

$7,536 (−0.7%)

$220,500 + $514,500

$735,000

2014

$7,589 (+9.2%)

$190,500 + $444,500

$635,000

2013

$6,952 (+7.1%)

$190,500 + $444,500

$635,000

2012

$6,491 (−0.5%)

$174,000 + $406,000

$580,000

2011

$6,524

$162,000 + $378,000

$540,000

2010

$6,524 (−6.7%)

$162,000 + $378,000

$540,000

2009

$6,995 (−3.2%)

$162,000 + $378,000

$540,000

2008

$7,228

$174,000 + $406,000

$580,000

Tax history for 3973 Westbury Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,035 (+2.2%)

$290,016 + $682,282

$972,298

2024

$11,771 (+1.6%)

$284,331 + $668,907

$953,238

2023

$11,589 (+1.9%)

$278,757 + $655,795

$934,552

2022

$11,372 (+2.6%)

$267,935 + $630,335

$898,270

2021

$11,083 (−13.8%)

$267,935 + $630,335

$898,270

2020

$12,863 (−1.1%)

$262,682 + $617,977

$880,659

2019

$13,006 (+2.5%)

$259,989 + $611,642

$871,631

2018

$12,691 (+28.1%)

$254,893 + $594,752

$849,645

2017

$9,908 (+8.7%)

$233,100 + $543,900

$777,000

2016

$9,116 (+21.0%)

$233,100 + $543,900

$777,000

2015

$7,536 (−0.7%)

$220,500 + $514,500

$735,000

2014

$7,589 (+9.2%)

$190,500 + $444,500

$635,000

2013

$6,952 (+7.1%)

$190,500 + $444,500

$635,000

2012

$6,491 (−0.5%)

$174,000 + $406,000

$580,000

2011

$6,524

$162,000 + $378,000

$540,000

2010

$6,524 (−6.7%)

$162,000 + $378,000

$540,000

2009

$6,995 (−3.2%)

$162,000 + $378,000

$540,000

2008

$7,228

$174,000 + $406,000

$580,000

*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

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

Jul 6, 2026 • Active

Building

Upgrade the main electrical panel to a higher amperage.

Electrical

Nov 12, 2025 • Active

Building

Construct new retaining walls to replace existing failing or inadequate walls. Eliminate groundwater intrusion at the rear of the garage and replace existing fences. Perform minor regrading for drainage at the driveway and install new pavers in designated areas.

Grading

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: 6

Exterior

Exterior Information
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Average

Property Information
Living Sq. Ft: 2,024
Building Sq. Ft: 2,024
# of Units: 1
# of Stories: 1

Lot Information
# of Buildings: 1
Land Sq. Ft: 7,150
Municipality Name: CASTRO VALLEY UNINCORP
Acres: 0.1641
County Use Description: SINGLE FAMILY RESIDENTIAL HOME

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 2,024
Stories: 1.0
Lot Size: 7,150 square feet
Style: Single Family Residential
Year Built: 1973
Year Renovated: 1974
County: Alameda County
APN: 084D134205502

Home facts updated by county records on Sep 17, 2026

Around this home

Schools

K - 12
Preschool & daycare

Chabot Elementary School

Public K-5 • Assigned • 0.5mi

9/10

Creekside Middle School

Public 6-8 • Assigned • 1.3mi

10/10

Castro Valley High School

Public 9-12 • Assigned • 0.4mi

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.
3 weeks ago • Castro Valley
Karan Kandel
Redfin agent
12 deals
Was this helpful?
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...
1 month ago • Castro Valley
Johnny Singh
Redfin Premier agent
139 deals
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Climate risks

1/10 Flood Factor

Minimal risk of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.62% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 88° expected this year, 15 days in 30 years

1/10 Wind Factor

Minimal risk of severe winds over next 30 years

7/10 Air Factor

12 unhealthy days expected this year, 12 days in 30 years

Provided by First Street

Historical weather

Castro Valley, CA • 94546

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 11.2 hours in June and 4.9 hours in December, placing it above the U.S. average for solar exposure.

11.2 hrs

4.9 hrs

JuneDecember

Provided by Shadowmap

Estimated sale price

$1.22M – $1.48M

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Home values near 3973 Westbury Rd

Data from public records.

Address	Redfin Estimate
3987 Westbury Rd, Castro Valley, CA 3 Beds \| 3 Baths \| 1242 Sq. Ft.	$1,193,987
3970 Westbury Rd, Castro Valley, CA 3 Beds \| 3 Baths \| 1963 Sq. Ft.	$1,166,192
18986 Vaughn Ave, Castro Valley, CA 4 Beds \| 3 Baths \| 1967 Sq. Ft.	$1,177,506
18985 Thornbury Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1194 Sq. Ft.	$903,310
4023 Milton Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1456 Sq. Ft.	$1,087,508
18970 Vaughn Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1324 Sq. Ft.	$1,008,442
4005 Milton Ave, Castro Valley, CA 4 Beds \| 3 Baths \| 2054 Sq. Ft.	$1,151,376

Address	Redfin Estimate
3960 Westbury Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1630 Sq. Ft.	$1,290,134
3982 Westbury Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1868 Sq. Ft.	$1,089,472
4053 Milton Ave, Castro Valley, CA 4 Beds \| 2.5 Baths \| 1940 Sq. Ft.	$1,281,460
19110 Vaughn Ave, Castro Valley, CA 3 Beds \| 3 Baths \| 1336 Sq. Ft.	$1,018,535
18945 Thornbury Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1432 Sq. Ft.	$1,248,003
3856 Wilson Ave, Castro Valley, CA 2 Beds \| 2 Baths \| 1232 Sq. Ft.	$821,863
3840 Wilson Ave, Castro Valley, CA - Beds \| 5 Baths \| 3467 Sq. Ft.	$1,322,914

Address	Redfin Estimate
3979 Westbury Rd, Castro Valley, CA 4 Beds \| 2 Baths \| 1932 Sq. Ft.	$1,231,423
18967 Vaughn Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1400 Sq. Ft.	$1,191,601
18969 Thornbury Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1336 Sq. Ft.	$1,168,787
18962 Vaughn Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1347 Sq. Ft.	$1,055,154
18977 Thornbury Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1383 Sq. Ft.	$1,177,256
18960 Thornbury Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 2153 Sq. Ft.	$1,177,545
3864 Wilson Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1321 Sq. Ft.	$1,343,067

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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 94546, CA

Sale history for 3973 Westbury Rd

Tax history for 3973 Westbury Rd

Zoning and permits

Property details

Around this home

Schools

Lifestyle

Local insights from Redfin agents

Climate risks

Historical weather

Sun exposure

Nearby similar homes

New listings for sale in 94546

Home values near 3973 Westbury Rd

More real estate resources