Google street view image for 21366 Rizzo Ave, Castro Valley, CA 94546

OFF MARKET

$888,879

•

1 ba

•

1,531

sq ft

21366 Rizzo Ave, Castro Valley, CA 94546

About this home

21366 Rizzo Ave is a 1,531 square foot house on a 7,857 square foot lot with 3 bedrooms and 1 bathroom. Based on Redfin's Castro Valley data, we estimate the home's value is $888,879.

Single-familyProperty Type

1946Year Built

7,857 sq ftLot Size

$581Est. Price/Sq.Ft.

Source:Public Records

Redfin Estimate

$888,879

$15K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5% higher than the average sale price ($846K) of 6 comparable homes.

SOLD AUG 7, 2026
$850,000
A
2 beds1 bath1,018 sq ft
2107 Lessley Ave, Castro Valley, CA 94546
SOLD JUL 9, 2026
$984,777
B
3 beds2 baths1,650 sq ft
21451 Rizzo Ave, Castro Valley, CA 94546
SOLD JUL 21, 2026
$880,000
C
3 beds2 baths1,476 sq ft
20872 /74 Wilbeam Ave, Castro Valley, CA 94546
SOLD JUL 28, 2026
$844,500
D
3 beds2 baths1,586 sq ft
2305 Star Ave, Hayward, CA 94546
SOLD APR 27, 2026
$768,000
E
3 beds1 bath871 sq ft
2226 Vegas Ave, Castro Valley, CA 94546
SOLD DEC 30, 2025
$750,000
F
3 beds1 bath1,545 sq ft
2537 Lessley Ave, Castro Valley, CA 94546

Claim this home to receive a free report every month with insights on the changing estimate.

Earn from this home

Sell

$841,835

Est. take-home

List your home with Redfin and save $4,444

Rent

$3,361/mo

Redfin rental estimate

List your home for rent

Market trends in 94546, CA

Last updated August 2026

Buyer's Market

Seller's Market

Seller's market

Sale-to-List Price

103.9%

1.3% MoM

Median sale price

$1.1M

$70K MoM

Avg. days on market

14d

1 days MoM

Recently sold homes

3 MoM

New listings for sale

$699,000
2 beds1 bath1,079 sq ft
18473 Apricot Way, Castro Valley, CA 94546
OPEN SUN, 1PM TO 3PM
$979,000
4 beds2.5 baths1,980 sq ft
4101 Toddika Ln, Castro Valley, CA 94546
OPEN TODAY, 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 beds2 baths1,122 sq ft
1540 Crescent Ave, 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 Way, Castro Valley, CA 94546
COMING SOON
$1,550,000
3 beds1.5 baths1,851 sq ft
4618 Ewing Rd, Castro Valley, CA 94546
OPEN SAT, 1PM TO 4PM
$699,999
3 beds1 bath1,036 sq ft
19117 Parsons Ave, Castro Valley, CA 94546
OPEN SUN, 2PM TO 4PM
$549,950
3 beds2 baths1,354 sq ft
21239 Gary Dr Unit 202E, Hayward, CA 94546
See all

Provided by Redfin

Sale history for 21366 Rizzo Ave

As the MLS and public records start to fill up, we'll list the details here.

Year

Property tax

Land + Additions

Assessment*

2025

$4,575 (+2.7%)

$103,868 + $205,150

$309,018

2024

$4,455 (+167.4%)

$103,868 + $205,150

$309,018

2023

$1,666 (+3.3%)

$101,831 + $201,128

$302,959

2022

$1,613 (+2.2%)

$36,504 + $32,576

$69,080

2021

$1,578 (+1.9%)

$36,504 + $32,576

$69,080

2020

$1,549 (−0.2%)

$35,788 + $31,937

$67,725

2019

$1,552 (+4.8%)

$35,421 + $31,610

$67,031

2018

$1,481 (+2.7%)

$34,727 + $30,990

$65,717

2017

$1,443 (+7.4%)

$33,378 + $29,787

$63,165

2016

$1,343 (+4.3%)

$33,378 + $29,787

$63,165

2015

$1,288 (+5.9%)

$32,724 + $29,203

$61,927

2014

$1,216 (+3.0%)

$31,601 + $28,201

$59,802

2013

$1,180 (+3.0%)

$31,601 + $28,201

$59,802

2012

$1,146 (+6.5%)

$31,458 + $28,073

$59,531

2011

$1,076 (+2.0%)

$30,841 + $27,523

$58,364

2010

$1,055 (+0.2%)

$30,237 + $26,983

$57,220

2009

$1,053 (+7.9%)

$30,011 + $26,782

$56,793

2008

$976

$30,082 + $26,845

$56,927

Tax history for 21366 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$4,575 (+2.7%)

$103,868 + $205,150

$309,018

2024

$4,455 (+167.4%)

$103,868 + $205,150

$309,018

2023

$1,666 (+3.3%)

$101,831 + $201,128

$302,959

2022

$1,613 (+2.2%)

$36,504 + $32,576

$69,080

2021

$1,578 (+1.9%)

$36,504 + $32,576

$69,080

2020

$1,549 (−0.2%)

$35,788 + $31,937

$67,725

2019

$1,552 (+4.8%)

$35,421 + $31,610

$67,031

2018

$1,481 (+2.7%)

$34,727 + $30,990

$65,717

2017

$1,443 (+7.4%)

$33,378 + $29,787

$63,165

2016

$1,343 (+4.3%)

$33,378 + $29,787

$63,165

2015

$1,288 (+5.9%)

$32,724 + $29,203

$61,927

2014

$1,216 (+3.0%)

$31,601 + $28,201

$59,802

2013

$1,180 (+3.0%)

$31,601 + $28,201

$59,802

2012

$1,146 (+6.5%)

$31,458 + $28,073

$59,531

2011

$1,076 (+2.0%)

$30,841 + $27,523

$58,364

2010

$1,055 (+0.2%)

$30,237 + $26,983

$57,220

2009

$1,053 (+7.9%)

$30,011 + $26,782

$56,793

2008

$976

$30,082 + $26,845

$56,927

*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

Apr 25, 2026 • Active

Building

Battery

Electrical

Solar

Feb 3, 2026 • Active

Building

Install a roof-mounted solar photovoltaic system with an energy storage system. Install a new electrical panel and upgrade the meter main electrical panel.

Battery

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: 7

Exterior

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

Property Information
Living Sq. Ft: 1,531
Building Sq. Ft: 1,531
# of Units: 1
# of Stories: 1

Lot Information
# of Buildings: 1
Land Sq. Ft: 7,857
Legal Lot Number: 34
Municipality Name: HAYWARD UNINCORP
Acres: 0.1804
County Use Description: SINGLE FAMILY RESIDENTIAL HOME

Financial

Assessor Information
Assessment Year: 2025

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,531
Stories: 1.0
Lot Size: 7,857 square feet
Style: Single Family Residential
Year Built: 1946
Year Renovated: 1946
County: Alameda County
APN: 415 006004100

Home facts updated by county records on Jul 27, 2026

Around this home

Schools

Fairview Elementary School

Public K-6 • Assigned • 1.6mi

2/10

Bret Harte Middle School

Public 7-8 • Assigned • 1.4mi

4/10

Hayward High School

Public 9-12 • Assigned • 1.5mi

5/10

Provided by GreatSchools

Lifestyle

Provided by Walk Score and Local Logic

Local insights from Redfin agents

Castro Valley is moving at a brisk pace this summer! Median prices are holding steady around $1.2M, but well-priced, turnkey homes are flying off the market in under 15 days, often over asking. Inventory is moving fast, so buyers must come prepared...
12 hours 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

1/10 Flood Factor

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

1/10 Fire Factor

Unlikely to be 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

$845,000 – $1.02M

Reach more buyers when you sell with Redfin. Save up to $8,889 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

$860,000

4 beds2.5 baths1,365 sq ft

16605 Rolando Ave, Castro Valley, CA 94578

$1,388,000

3 beds3 baths2,700 sq ft

22128 Prospect St, Hayward, CA 94541

$1,200,000

4 beds2 baths1,966 sq ft

2175 Grove Way, Hayward, CA 94546

Innovative Realty

OPEN SAT, 1PM TO 4PMHOT HOME

$699,999

3 beds1 bath1,036 sq ft

19117 Parsons Ave, Castro Valley, CA 94546

$949,887

3 beds2 baths1,191 sq ft

1456 B St, Hayward, CA 94541

$875,000

3 beds2 baths1,713 sq ft

1245 Cotter Way, Hayward, CA 94541

New listings for sale in 94546

$699,000

2 beds1 bath1,079 sq ft

18473 Apricot Way, Castro Valley, CA 94546

OPEN SUN, 1PM TO 3PM

$979,000

4 beds2.5 baths1,980 sq ft

4101 Toddika Ln, Castro Valley, CA 94546

OPEN TODAY, 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 beds2 baths1,122 sq ft

1540 Crescent Ave, 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 Way, Castro Valley, CA 94546

COMING SOON

$1,550,000

3 beds1.5 baths1,851 sq ft

4618 Ewing Rd, Castro Valley, CA 94546

OPEN SAT, 1PM TO 4PMHOT HOME

$699,999

3 beds1 bath1,036 sq ft

19117 Parsons Ave, Castro Valley, CA 94546

Home values near 21366 Rizzo Ave

Data from public records.

Address	Redfin Estimate
21348 Rizzo Avenue, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$848,611
21360 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 1371 Sq. Ft.	$1,005,828

Address	Redfin Estimate
21342 Rizzo Avenue, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$794,550
21337 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$953,930

Address	Redfin Estimate
21331 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 2224 Sq. Ft.	$1,148,572
21367 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1245 Sq. Ft.	$944,009

Download the Redfin App on the Apple App Store

Download the Redfin App from the Google Play Store

Join us

Become an Agent

Get referrals

Careers

Find homes faster

About us

Find us

Subsidiaries

Affiliated Business

Countries

United States

Canada

Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.

Do not sell or share my personal information.

REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.

California DRE #01521930

Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures

New Mexico Real Estate Licenses

TREC: Info About Brokerage Services, Consumer Protection Notice

All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.

Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.

If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.

REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.

GreatSchools Ratings provided by GreatSchools.org.

94541 homes for sale
94544 homes for sale
94546 homes for sale
94580 homes for sale
94583 homes for sale

Houses for rent in Castro Valley	Agents near me	Irvine, CA homes for sale	Castro Valley Housing Market
Houses for sale near me	San Diego, CA homes for sale	Fremont, CA homes for sale
Land for sale near me	San Francisco, CA homes for sale	Pasadena, CA homes for sale
Open Houses near me	Los Angeles, CA homes for sale	Castro Valley Property Records
Condos for sale near me	San Jose, CA homes for sale	CA New Listings

San Jose homes for sale
San Francisco homes for sale
Fremont homes for sale

About this home

Redfin Estimate

Earn from this home

Market trends in 94546, CA

Sale history for 21366 Rizzo Ave

Tax history for 21366 Rizzo Ave

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 21366 Rizzo Ave

More real estate resources