OFF MARKET

Off market feb 2010 for $357K

$940,999

Est. refi paymentEst. refi $1,877/mo

•

1,828

sq ft

21318 Rizzo Ave, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1947Year Built

6,000 sq ftLot Size

$515Est. Price/Sq.Ft.

Listed by George Avram •DRE #01422589 • Homebids

Bought with Oliver Lou •DRE #01452904 • Kroll Realty

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40441722

Redfin Estimate

$940,999

$584K since sold in February 2010$20K since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 5.9% higher than the average sale price ($889K) of 6 comparable homes.

SOLD JUL 9, 2026
$984,777
A
3 beds2 baths1,650 sq ft
21451 Rizzo Ave, Castro Valley, CA 94546
SOLD JUL 28, 2026
$844,500
B
3 beds2 baths1,586 sq ft
2305 Star Ave, Castro Valley, CA 94546
SOLD SEP 24, 2026
$925,000
C
3 beds2 baths1,539 sq ft
20927 Nunes Ave, Castro Valley, CA 94546
SOLD APR 27, 2026
$768,000
D
3 beds1 bath871 sq ft
2226 Vegas Ave, Castro Valley, CA 94546
SOLD SEP 30, 2026
$1,060,000
E
3 beds2 baths1,591 sq ft
4315 Omega 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

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Earn from this home

Sell

$723,255

Est. take-home

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Refinance

Est. cash available

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Rent

$3,387/mo

Redfin rental estimate

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Market trends in 94546, CA

Last updated September 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

New listings for sale

OPEN WED, 10AM TO 1PM
$1,249,000
3 beds2 baths1,731 sq ft
19431 Garrison Ave, Castro Valley, CA 94546
$549,988
3 beds2 baths1,354 sq ft
21239 Gary Dr #518, Hayward, CA 94546
OPEN SUN, 12PM TO 3PM
$895,000
3 beds2 baths1,509 sq ft
17494 Ehle St, Castro Valley, CA 94546
3D WALKTHROUGH
$699,900
2 beds1 bath1,188 sq ft
2223 Lessley Ave, Castro Valley, CA 94546
$2,600,000
5 beds6 baths4,216 sq ft
4683 Proctor Rd, Castro Valley, CA 94546
$1,490,000
4 beds2 baths1,916 sq ft
4475 Hillsborough Dr, Castro Valley, CA 94546
3D & VIDEO TOUR
$949,000
3 beds2.5 baths1,918 sq ft
20061 Santa Maria Ave, Castro Valley, CA 94546
3D & VIDEO TOUR
$1,188,000
4 beds2.5 baths2,295 sq ft
2783 Jennifer Dr, Castro Valley, CA 94546
OPEN SAT, 2PM TO 4PM
$1,175,000
3 beds2 baths1,795 sq ft
19563 Helen Pl, Castro Valley, CA 94546
$1,200,000
4 beds3 baths1,897 sq ft
18153 Judy St, Castro Valley, CA 94546
See all

Provided by Redfin

Sale history for 21318 Rizzo Ave

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #40441722

Mar 1, 2010

Sold

$357,000

$195/sq ft

Dec 18, 2009

Pending

—

Dec 10, 2009

Listed

$360,000

$197/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #11057917

Sep 19, 2000

Sold

$277,000

$152/sq ft

Aug 28, 2000

Listing Removed

—

Jun 27, 2000

Listed

$269,999

$148/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$6,378 (+2.6%)

$141,001 + $329,003

$470,004

2024

$6,217 (+2.0%)

$138,237 + $322,553

$460,790

2023

$6,096 (+2.4%)

$135,527 + $316,230

$451,757

2022

$5,953 (+1.2%)

$130,265 + $303,953

$434,218

2021

$5,884 (+1.4%)

$130,265 + $303,953

$434,218

2020

$5,805 (−0.7%)

$127,712 + $297,995

$425,707

2019

$5,846 (+6.4%)

$126,403 + $294,941

$421,344

2018

$5,496 (+2.6%)

$123,925 + $289,159

$413,084

2017

$5,359 (+6.1%)

$119,114 + $277,933

$397,047

2016

$5,053 (+2.7%)

$119,114 + $277,933

$397,047

2015

$4,919 (−5.0%)

$116,779 + $272,485

$389,264

2014

$5,176 (+6.4%)

$112,774 + $263,139

$375,913

2013

$4,867 (+8.2%)

$112,774 + $263,139

$375,913

2012

$4,499 (+1.7%)

$112,265 + $261,952

$374,217

2011

$4,422 (+0.5%)

$110,064 + $256,817

$366,881

2010

$4,402 (+0.7%)

$107,906 + $251,781

$359,687

2009

$4,373 (+4.0%)

$107,100 + $249,900

$357,000

2008

$4,202

$97,236 + $259,552

$356,788

Tax history for 21318 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$6,378 (+2.6%)

$141,001 + $329,003

$470,004

2024

$6,217 (+2.0%)

$138,237 + $322,553

$460,790

2023

$6,096 (+2.4%)

$135,527 + $316,230

$451,757

2022

$5,953 (+1.2%)

$130,265 + $303,953

$434,218

2021

$5,884 (+1.4%)

$130,265 + $303,953

$434,218

2020

$5,805 (−0.7%)

$127,712 + $297,995

$425,707

2019

$5,846 (+6.4%)

$126,403 + $294,941

$421,344

2018

$5,496 (+2.6%)

$123,925 + $289,159

$413,084

2017

$5,359 (+6.1%)

$119,114 + $277,933

$397,047

2016

$5,053 (+2.7%)

$119,114 + $277,933

$397,047

2015

$4,919 (−5.0%)

$116,779 + $272,485

$389,264

2014

$5,176 (+6.4%)

$112,774 + $263,139

$375,913

2013

$4,867 (+8.2%)

$112,774 + $263,139

$375,913

2012

$4,499 (+1.7%)

$112,265 + $261,952

$374,217

2011

$4,422 (+0.5%)

$110,064 + $256,817

$366,881

2010

$4,402 (+0.7%)

$107,906 + $251,781

$359,687

2009

$4,373 (+4.0%)

$107,100 + $249,900

$357,000

2008

$4,202

$97,236 + $259,552

$356,788

*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

6,000 Sq. Ft.

Year renovated

1952

Sq. Ft.

1,828

Year built

1947

Style

Single Family Residential

County

Alameda County

APN

415 006004900

Parking Spaces

—

Basement

—

Accessible

—

HOA Dues

—

Garage

—

Features

—

Last updated by owner on Sep 16, 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

Property details

Interior

Bathroom Information
# of Bathrooms Total: 1
# of Bathrooms Full: 1

Interior Features
Interior Features: Family Room, Eat-in Kitchen
Laundry Features: Laundry Room
Street Level Features: 3 Bedrooms, 1 Bath
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Tile, Carpet

Room Information
Kitchen Features: Eat In Kitchen
Rooms Total: 8
Fireplace Features: Brick, Living Room, Pellet Stove

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 1,828

Exterior Features
Exterior Features: Back Yard, Front Yard
Roof: Shingle

Pool Information
Pool Features: In Ground
Has Private Pool

Property Information
Living Area: 1828
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1947

Lot Information
Lot Size Square Feet: 6000
Lot Size Area: 0.14
Lot Size Units: Acres
Lot Size Acres: 0.14
Lot Features: Level
Zoning: 1001

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

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

Location

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

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,828
Stories: 1.0
Lot Size: 6,000 square feet
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1952
County: Alameda County
APN: 415 006004900

Home facts updated by county records on Sep 16, 2026

Around this home

Schools

Fairview Elementary School

Public K-6 • Assigned • 1.7mi

2/10

Bret Harte Middle School

Public 7-8 • Assigned • 1.5mi

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'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...
3 weeks ago • Castro Valley
Johnny Singh
Redfin Premier agent
148 deals
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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

$894,000 – $1.08M

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Home values near 21318 Rizzo Ave

Data from public records.

Address	Redfin Estimate
21348 Rizzo Ave, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$829,537
21319 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$822,001

Address	Redfin Estimate
21342 Rizzo Ave, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$764,496
21337 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$899,408

Address	Redfin Estimate
21331 Rizzo Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 2224 Sq. Ft.	$1,093,126
21367 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1245 Sq. Ft.	$883,368

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2009. 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 21318 Rizzo Ave

Tax history for 21318 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 21318 Rizzo Ave

More real estate resources