OFF MARKET

Off Market Jul 2017 for $730K

$1,057,823

Est. refi paymentEst. refi $5,067/mo

•

1,706

sq ft

21427 Rizzo Ave, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1966Year Built

6,993 sq ftLot Size

$620Est. Price/Sq.Ft.

2 car garageParking

Listed by Lisa Ferraris •DRE #01825858 • Christie's Int'l RE Sereno

Bought with Judy Rose •DRE #00633313 • RE/MAX Accord

Redfin checked: 3 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40784090

Redfin Estimate

$1,057,823

$328K since sold in July 2017$19K since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 12.3% higher than the average sale price ($942K) of 6 comparable homes.

SOLD MAY 22, 2026
$1,075,000
A
3 beds2 baths1,876 sq ft
21723 Shadyspring Rd, 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 MAY 5, 2026
$880,000
C
3 beds2 baths1,462 sq ft
1917 Wingate Way, Hayward, CA 94541
CLA Realty
SOLD JUL 20, 2026
$1,045,000
D
3 beds2 baths1,314 sq ft
3228 Kerr St, Castro Valley, CA 94546
SOLD MAR 27, 2026
$825,000
E
3 beds2 baths1,557 sq ft
1516 Grove Way, Hayward, CA 94546
SOLD JUL 28, 2026
$844,500
F
3 beds2 baths1,586 sq ft
2305 Star Ave, Hayward, CA 94546

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

Earn from this home

Sell

$529,287

Est. take-home

List your home with Redfin and save $5,289

Refinance

Est. cash available

Get cash now or lower your monthly rate

Rent

$3,870/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

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 Way, 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 21427 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$5,296 (+2.7%)

$113,124 + $263,958

$377,082

2024

$5,157 (+2.1%)

$113,124 + $263,958

$377,082

2023

$5,051 (+2.5%)

$110,906 + $258,784

$369,690

2022

$4,928 (+1.3%)

$106,600 + $248,736

$355,336

2021

$4,866 (+1.4%)

$106,600 + $248,736

$355,336

2020

$4,798 (−0.7%)

$104,510 + $243,859

$348,369

2019

$4,830 (+4.4%)

$103,439 + $241,360

$344,799

2018

$4,629 (+66.0%)

$101,411 + $236,629

$338,040

2017

$2,789 (+6.5%)

$68,832 + $109,131

$177,963

2016

$2,619 (+3.2%)

$68,832 + $109,131

$177,963

2015

$2,537 (+5.8%)

$67,482 + $106,991

$174,473

2014

$2,398 (+1.8%)

$65,167 + $103,320

$168,487

2013

$2,354 (+2.4%)

$65,167 + $103,320

$168,487

2012

$2,299 (+3.3%)

$64,873 + $102,854

$167,727

2011

$2,226 (+2.1%)

$63,601 + $100,837

$164,438

2010

$2,180 (−0.9%)

$62,354 + $98,861

$161,215

2009

$2,198 (+5.2%)

$61,888 + $98,122

$160,010

2008

$2,089

$62,035 + $98,355

$160,390

Tax history for 21427 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$5,296 (+2.7%)

$113,124 + $263,958

$377,082

2024

$5,157 (+2.1%)

$113,124 + $263,958

$377,082

2023

$5,051 (+2.5%)

$110,906 + $258,784

$369,690

2022

$4,928 (+1.3%)

$106,600 + $248,736

$355,336

2021

$4,866 (+1.4%)

$106,600 + $248,736

$355,336

2020

$4,798 (−0.7%)

$104,510 + $243,859

$348,369

2019

$4,830 (+4.4%)

$103,439 + $241,360

$344,799

2018

$4,629 (+66.0%)

$101,411 + $236,629

$338,040

2017

$2,789 (+6.5%)

$68,832 + $109,131

$177,963

2016

$2,619 (+3.2%)

$68,832 + $109,131

$177,963

2015

$2,537 (+5.8%)

$67,482 + $106,991

$174,473

2014

$2,398 (+1.8%)

$65,167 + $103,320

$168,487

2013

$2,354 (+2.4%)

$65,167 + $103,320

$168,487

2012

$2,299 (+3.3%)

$64,873 + $102,854

$167,727

2011

$2,226 (+2.1%)

$63,601 + $100,837

$164,438

2010

$2,180 (−0.9%)

$62,354 + $98,861

$161,215

2009

$2,198 (+5.2%)

$61,888 + $98,122

$160,010

2008

$2,089

$62,035 + $98,355

$160,390

*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

6,993 Sq. Ft.

Year renovated

1966

Sq. Ft.

1,706

Year built

1942

Style

Single Family Residential

County

Alameda County

APN

415 006006300

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

Jun 21, 2016 • Final

Building

Tear off and replace the existing roof with new composition asphalt shingles on a two-family residential building. Use the existing roof deck and recycle the old roofing material.

Roofing

Sep 18, 2015 • Final

Building

Remove existing siding and install new oriented strand board and siding. Replace windows with new construction windows.

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

Interior

Virtual Tour

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 2
Other Bathrooms Included Features: Shower Over Tub, Tile
Primary Bathroom Included Features: Solid Surface, Stall Shower

Interior Features
Interior Features: Family Room, Counter - Solid Surface, Updated Kitchen
Appliances: Dishwasher, Gas Range, Plumbed For Ice Maker, Free-Standing Range, Gas Water Heater
Laundry Features: Gas Dryer Hookup, Hookups Only, Laundry Room
Street Level Features: 3 Bedrooms, 2 Baths, Laundry Facility, Main Entry
Window Features: Double Pane Windows, Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Linoleum, Carpet

Room Information
Kitchen Features: Counter - Solid Surface,Dishwasher,Gas Range/Cooktop,Ice Maker Hookup,Range/Oven Free Standing,Updated Kitchen
Rooms Total: 8
Fireplace Features: Insert, Gas, Living Room
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Wood Siding
Building Area Total: 1,706

Exterior Features
Patio And Porch Features: Patio
Exterior Features: Back Yard, Front Yard, Sprinklers Back, Sprinklers Front
Door Features: Mirrored Closet Door(s)
Fencing: Fenced
Roof: Shingle

Property Information
Living Area: 1706
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1966

Lot Information
Other Structures: Shed(s)
Lot Size Square Feet: 6993
Lot Size Area: 0.16
Lot Size Units: Acres
Lot Size Acres: 0.16
Lot Features: Regular

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air
Cooling: Ceiling Fan(s)

Location

Homeowners Association Information
Pets Allowed: Yes

School Information
High School District: Hayward (510) 784-2600

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,706
Stories: 1.0
Lot Size: 6,993 square feet
Style: Single Family Residential
Year Built: 1942
Year Renovated: 1966
County: Alameda County
APN: 415 006006300

Home facts updated by county records on Jul 27, 2026

Around this home

Schools

Fairview Elementary School

Public K-6 • Assigned • 1.7mi

2/10

Bret Harte Middle School

Public 7-8 • Assigned • 1.4mi

4/10

Hayward High School

Public 9-12 • Assigned • 1.4mi

5/10

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

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

$1.00M – $1.22M

Reach more buyers when you sell with Redfin. Save up to $10,578 in fees. 3 minutes to get started.

Need the cash from your home fast? Sell to .

Nearby similar homes

$999,950

3 beds1 bath1,285 sq ft

4231 Somerset Ave, 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

$1,095,000

4 beds2.5 baths1,988 sq ft

16630 Cowell St, Castro Valley, CA 94578

$749,888

2 beds1 bath1,018 sq ft

2293 Vestal Ave, Castro Valley, CA 94546

$875,000

3 beds2 baths1,713 sq ft

1245 Cotter Way, Hayward, CA 94541

$998,000

3 beds2.5 baths1,918 sq ft

20061 Santa Maria Ave, Castro Valley, CA 94546

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

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 Way, 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 21427 Rizzo Ave

Data from public records.

Address	Redfin Estimate
21446 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 1552 Sq. Ft.	$921,242
21433 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1277 Sq. Ft.	$930,618

Address	Redfin Estimate
21452 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1104 Sq. Ft.	$904,383
21409 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 1633 Sq. Ft.	$1,074,466

Address	Redfin Estimate
21445 Rizzo Avenue, Castro Valley, CA 2 Beds \| 1 Baths \| 1356 Sq. Ft.	$855,567
21384 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 1100 Sq. Ft.	$828,315

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2017. This data may not match . Learn more.

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 21427 Rizzo Ave

Tax history for 21427 Rizzo Ave

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 21427 Rizzo Ave

More real estate resources