OFF MARKET

Off Market Sep 2022 for $1M

$1,536,244

Est. refi paymentEst. refi $7,598/mo

•

2,216

sq ft

18889 Walnut Rd, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1953Year Built

7,800 sq ftLot Size

$693Est. Price/Sq.Ft.

2 car garageParking

Listed by Yvonne Benson •DRE #00744739 • Benson-Rubino Real Estate

Bought with Michael Brady •DRE #02096565 • Golden Gate Sothebys International Realty

Redfin checked: 2 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #41000270

Redfin Estimate

$1,536,244

$516K since sold in September 2022$4,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 23.6% higher than the average sale price ($1.24M) of 6 comparable homes.

SOLD JUL 27, 2026
$1,064,000
A
3 beds2.5 baths1,226 sq ft
3488 Brookdale Blvd, Castro Valley, CA 94546
SOLD MAY 22, 2026
$1,300,000
B
3 beds2 baths1,858 sq ft
3635 Northwood Dr, Castro Valley, CA 94546
SOLD MAR 20, 2026
$1,362,000
C
3 beds2.5 baths2,391 sq ft
18153 Plymouth Dr, Castro Valley, CA 94546
SOLD JUN 9, 2026
$1,175,000
D
3 beds2.5 baths1,699 sq ft
18419 Clifton Way, Castro Valley, CA 94546
SOLD JAN 7, 2026
$1,335,000
E
3 beds2.5 baths2,018 sq ft
17838 Walnut Rd, Castro Valley, CA 94546
SOLD JUN 23, 2026
$1,220,000
F
4 beds2 baths1,888 sq ft
17676 Garland Ct, Castro Valley, CA 94546

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Earn from this home

Sell

$699,591

Est. take-home

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Est. cash available

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Rent

$3,973/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

105.6%

+0.7% MoM

Median sale price

$1.1M

$45K MoM

Avg. days on market

13d

1 days MoM

Recently sold homes

100

5 MoM

New listings for sale

OPEN SUN, 1PM TO 3PM
$979,000
4 beds2.5 baths1,980 sq ft
4101 Toddika Ln, Castro Valley, CA 94546
OPEN WED, 10:30AM TO 12PM
$999,000
4 beds2 baths1,680 sq ft
20275 Stanton Ave, Castro Valley, CA 94546
OPEN SAT, 1:30PM TO 4PM
$799,000
2 beds1 bath1,122 sq ft
1540 Crescent Ave, Castro Valley, CA 94546
COMING SOON
$799,000
2 beds1 bath1,079 sq ft
18473 Apricot Way, Castro Valley, CA 94546
$1,175,000
3 beds2 baths1,440 sq ft
19453 Vaughn Ave, Castro Valley, CA 94546
Pacific Home Brokers
$695,000
2 beds1.5 baths1,207 sq ft
20279 Forest Ave, Castro Valley, CA 94546
(415) 510-8600
$870,000
3 beds1 bath1,080 sq ft
2976 Sydney, Castro Valley, CA 94546
COMING SOON
$1,550,000
3 beds1.5 baths1,851 sq ft
4618 Ewing Rd, Castro Valley, CA 94546
HOT HOME
$699,999
3 beds1 bath1,036 sq ft
19117 Parsons Ave, Castro Valley, CA 94546
$549,950
3 beds2 baths1,354 sq ft
21239 Gary Dr Unit 202E, Hayward, CA 94546
See all

Provided by Redfin

Sale history for 18889 Walnut Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,752 (+2.1%)

$302,100 + $704,900

$1,007,000

2024

$12,484 (+4.6%)

$302,100 + $704,900

$1,007,000

2023

$11,930 (+530.9%)

$296,400 + $691,600

$988,000

2022

$1,891 (+3.1%)

$34,833 + $67,271

$102,104

2021

$1,835 (+2.5%)

$34,833 + $67,271

$102,104

2020

$1,789 (−1.0%)

$34,150 + $65,952

$100,102

2019

$1,808 (+3.1%)

$33,800 + $65,276

$99,076

2018

$1,754 (+2.9%)

$33,138 + $63,996

$97,134

2017

$1,704 (+5.2%)

$31,851 + $61,511

$93,362

2016

$1,620 (+7.0%)

$31,851 + $61,511

$93,362

2015

$1,514 (+3.1%)

$31,226 + $60,305

$91,531

2014

$1,468 (+2.5%)

$30,155 + $58,236

$88,391

2013

$1,433 (+2.9%)

$30,155 + $58,236

$88,391

2012

$1,393 (+1.6%)

$30,019 + $57,973

$87,992

2011

$1,371 (+1.0%)

$29,430 + $56,836

$86,266

2010

$1,357 (+0.5%)

$28,853 + $55,722

$84,575

2009

$1,351 (+6.5%)

$28,638 + $55,306

$83,944

2008

$1,268

$28,706 + $55,437

$84,143

Tax history for 18889 Walnut Rd

Year

Property tax

Land + Additions

Assessment*

2025

$12,752 (+2.1%)

$302,100 + $704,900

$1,007,000

2024

$12,484 (+4.6%)

$302,100 + $704,900

$1,007,000

2023

$11,930 (+530.9%)

$296,400 + $691,600

$988,000

2022

$1,891 (+3.1%)

$34,833 + $67,271

$102,104

2021

$1,835 (+2.5%)

$34,833 + $67,271

$102,104

2020

$1,789 (−1.0%)

$34,150 + $65,952

$100,102

2019

$1,808 (+3.1%)

$33,800 + $65,276

$99,076

2018

$1,754 (+2.9%)

$33,138 + $63,996

$97,134

2017

$1,704 (+5.2%)

$31,851 + $61,511

$93,362

2016

$1,620 (+7.0%)

$31,851 + $61,511

$93,362

2015

$1,514 (+3.1%)

$31,226 + $60,305

$91,531

2014

$1,468 (+2.5%)

$30,155 + $58,236

$88,391

2013

$1,433 (+2.9%)

$30,155 + $58,236

$88,391

2012

$1,393 (+1.6%)

$30,019 + $57,973

$87,992

2011

$1,371 (+1.0%)

$29,430 + $56,836

$86,266

2010

$1,357 (+0.5%)

$28,853 + $55,722

$84,575

2009

$1,351 (+6.5%)

$28,638 + $55,306

$83,944

2008

$1,268

$28,706 + $55,437

$84,143

*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

7,800 Sq. Ft.

Year renovated

1960

Sq. Ft.

1,492

Year built

1953

Style

Single Family Residential

County

Alameda County

APN

084D110704600

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Jul 27, 2026.

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

Aug 17, 2023 • Final

Building

Relocate and install a new mini-split system and one new electrical circuit.

HVAC

Jul 7, 2010 • Final

Building

Remodel a master bathroom. Install a new shower stall, shower pan, shower valve, vanity, sink, and faucet. Install new electrical circuits, a solar tube with a fan, and fluorescent recessed lighting.

Bathroom

Electrical

Remodel

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: 2
Covered Spaces: 2
Parking Features: Attached, Garage Door Opener

Interior

Bathroom Information
# of Bathrooms Total: 3
# of Bathrooms Full: 2
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Tile
Primary Bathroom Included Features: Stall Shower, Tile

Interior Features
Interior Features: Bonus/Plus Room, Dining Area, Family Room, Formal Dining Room, Kitchen/Family Combo, Rec/Rumpus Room, Counter - Solid Surface
Appliances: Dishwasher, Electric Range, Disposal, Gas Water Heater
Laundry Features: In Garage
Window Features: Skylight(s)
Fireplaces Total: 2
Has Fireplace
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Counter - Solid Surface,Dishwasher,Electric Range/Cooktop,Garbage Disposal,Skylight(s)
Rooms Total: 8
Fireplace Features: Brick, Recreation Room

Exterior

Building Information
Construction Materials: Stucco, Wood Shingles
Building Area Total: 2,216

Exterior Features
Exterior Features: Terraced Up

Property Information
Living Area: 2216
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1953

Lot Information
Lot Size Square Feet: 7800
Lot Size Area: 0.18
Lot Size Units: Acres
Lot Size Acres: 0.18
Lot Features: Sloped Up

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer
Utilities: All Public Utilities, Internet Available

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: No Air Conditioning

Location

School Information
High School District: Castro Valley (510) 537-3000

Public facts

Beds: 3
Baths: 3.0
Sq. Ft.: 1,492
Stories: 2.0
Lot Size: 7,800 square feet
Style: Single Family Residential
Year Built: 1953
Year Renovated: 1960
County: Alameda County
APN: 084D110704600

Home facts updated by county records on Jul 27, 2026

Around this home

Schools

Chabot Elementary School

Public K-5 • Assigned • 0.3mi

9/10

Creekside Middle School

Public 6-8 • Assigned • 1.8mi

10/10

Castro Valley High School

Public 9-12 • Assigned • 0.9mi

9/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Castro Valley's late-summer market shows a clear split. While median prices hold near $1.2M, increased inventory gives buyers leverage on older properties. However, immaculate homes still go pending in under 15 days. A strong, clean offer is key!
2 weeks ago • Castro Valley
Johnny Singh
Redfin Premier agent
146 deals
Was this helpful?
Strong buyer demand keeps the Castro Valley market moving incredibly fast. With homes frequently selling above their $1.2 million median price, decisive action is essential. To win here, buyers need to submit competitive offers quickly and minimize...
1 month ago • Castro Valley
Karan Kandel
Redfin agent
13 deals
Was this helpful?

Climate risks

6/10 Flood Factor

Estimated 67-74% chance of a flood reaching the building in the next 30 years

3/10 Fire Factor

0.46% chance of being in a wildfire in next 30 years

4/10 Heat Factor

7 days above 88° expected this year, 14 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

$1.46M – $1.77M

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New listings for sale in 94546

OPEN SUN, 1PM TO 3PM

$979,000

4 beds2.5 baths1,980 sq ft

4101 Toddika Ln, Castro Valley, CA 94546

OPEN WED, 10:30AM TO 12PM

$999,000

4 beds2 baths1,680 sq ft

20275 Stanton Ave, Castro Valley, CA 94546

OPEN SAT, 1:30PM TO 4PM

$799,000

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COMING SOON

$799,000

2 beds1 bath1,079 sq ft

18473 Apricot Way, Castro Valley, CA 94546

$1,175,000

3 beds2 baths1,440 sq ft

19453 Vaughn Ave, Castro Valley, CA 94546

Pacific Home Brokers

$695,000

2 beds1.5 baths1,207 sq ft

20279 Forest Ave, Castro Valley, CA 94546

(415) 510-8600

$870,000

3 beds1 bath1,080 sq ft

2976 Sydney, Castro Valley, CA 94546

COMING SOON

$1,550,000

3 beds1.5 baths1,851 sq ft

4618 Ewing Rd, Castro Valley, CA 94546

HOT HOME

$699,999

3 beds1 bath1,036 sq ft

19117 Parsons Ave, Castro Valley, CA 94546

Home values near 18889 Walnut Rd

Data from public records.

Address	Redfin Estimate
18878 Walnut Rd, Castro Valley, CA 4 Beds \| 3 Baths \| 1937 Sq. Ft.	$1,300,176
18902 Walnut Rd, Castro Valley, CA 3 Beds \| 1 Baths \| 1066 Sq. Ft.	$1,014,716

Address	Redfin Estimate
18867 Walnut Rd, Castro Valley, CA 4 Beds \| 2.5 Baths \| 3364 Sq. Ft.	$1,778,616
18939 Walnut Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1747 Sq. Ft.	$1,311,951

Address	Redfin Estimate
18874 Walnut Rd, Castro Valley, CA 3 Beds \| 2 Baths \| 1686 Sq. Ft.	$1,318,608
18927 Walnut Rd, Castro Valley, CA 4 Beds \| 2 Baths \| 1704 Sq. Ft.	$1,239,101

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2022. 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 94546, CA

Sale history for 18889 Walnut Rd

Tax history for 18889 Walnut Rd

Public record

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 18889 Walnut Rd

More real estate resources