21336 Rizzo Ave, Castro Valley, CA 94546

Off market sep 2004 for $429K

$799,889

Est. refi paymentEst. refi $2,899/mo

•

1,100

sq ft

21336 Rizzo Ave, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1947Year Built

5,376 sq ftLot Size

$727Est. Price/Sq.Ft.

1 car garageParking

Listed by Carol Thornberry •DRE #01382406 • Greg Silva Realty

Listed by Stacey Thornberry •DRE #01386697 • Greg Silva Realty

Bought with Dean Souza •DRE #00967442 • RE/MAX IN MOTION

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40031098

Redfin Estimate

$799,889

$371K since sold in September 2004$7,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 0.5% lower than the average sale price ($804K) 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 SEP 10, 2026
$749,888
B
2 beds1 bath1,018 sq ft
2293 Vestal Ave, Castro Valley, CA 94546
SOLD APR 27, 2026
$768,000
C
3 beds1 bath871 sq ft
2226 Vegas Ave, Castro Valley, CA 94546
SOLD APR 1, 2026
$910,000
D
3 beds2 baths1,185 sq ft
21330 Tyee St, Castro Valley, CA 94546
SOLD APR 22, 2026
$800,000
E
3 beds1.5 baths1,073 sq ft
2672 Watson St, Castro Valley, CA 94546
SOLD MAY 28, 2026
$745,000
F
2 beds1 bath1,192 sq ft
2329 Vestal Ave, Castro Valley, CA 94546

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Earn from this home

Sell

$625,455

Est. take-home

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Refinance

Est. cash available

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Rent

$3,215/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 21336 Rizzo Ave

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #40028108

Jun 13, 2022

Listing Removed

—

bridgeMLS, Bay East AOR, or Contra Costa AOR #40031098

Sep 1, 2004

Sold

$429,000

$390/sq ft

Jul 31, 2004

Listing Removed

—

Jul 29, 2004

Listed

$429,000

$390/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #10580239

Oct 18, 1996

Sold

$141,500

$129/sq ft

Jul 9, 1996

Listed

$154,950

$141/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #26580239

Oct 18, 1996

Sold

$141,500

$129/sq ft

Sep 20, 1996

Listing Removed

—

Jul 9, 1996

Listed

$154,950

$141/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$8,008 (+2.5%)

$182,966 + $426,921

$609,887

2024

$7,809 (+1.9%)

$179,379 + $418,552

$597,931

2023

$7,664 (+2.3%)

$175,863 + $410,347

$586,210

2022

$7,490 (+1.1%)

$169,035 + $394,417

$563,452

2021

$7,408 (+1.3%)

$169,035 + $394,417

$563,452

2020

$7,311 (−0.7%)

$165,721 + $386,684

$552,405

2019

$7,365 (+6.5%)

$164,023 + $382,720

$546,743

2018

$6,917 (+2.5%)

$160,808 + $375,218

$536,026

2017

$6,745 (+12.0%)

$154,566 + $360,654

$515,220

2016

$6,024 (+12.5%)

$154,566 + $360,654

$515,220

2015

$5,354 (+9.5%)

$142,500 + $332,500

$475,000

2014

$4,888 (+18.0%)

$119,200 + $278,300

$397,500

2013

$4,143 (+9.8%)

$119,200 + $278,300

$397,500

2012

$3,772 (+3.3%)

$99,700 + $232,800

$332,500

2011

$3,651 (−6.9%)

$90,000 + $210,000

$300,000

2010

$3,922 (−3.0%)

$87,000 + $203,000

$290,000

2009

$4,043 (−24.6%)

$96,000 + $224,000

$320,000

2008

$5,360

$98,100 + $228,900

$327,000

Tax history for 21336 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$8,008 (+2.5%)

$182,966 + $426,921

$609,887

2024

$7,809 (+1.9%)

$179,379 + $418,552

$597,931

2023

$7,664 (+2.3%)

$175,863 + $410,347

$586,210

2022

$7,490 (+1.1%)

$169,035 + $394,417

$563,452

2021

$7,408 (+1.3%)

$169,035 + $394,417

$563,452

2020

$7,311 (−0.7%)

$165,721 + $386,684

$552,405

2019

$7,365 (+6.5%)

$164,023 + $382,720

$546,743

2018

$6,917 (+2.5%)

$160,808 + $375,218

$536,026

2017

$6,745 (+12.0%)

$154,566 + $360,654

$515,220

2016

$6,024 (+12.5%)

$154,566 + $360,654

$515,220

2015

$5,354 (+9.5%)

$142,500 + $332,500

$475,000

2014

$4,888 (+18.0%)

$119,200 + $278,300

$397,500

2013

$4,143 (+9.8%)

$119,200 + $278,300

$397,500

2012

$3,772 (+3.3%)

$99,700 + $232,800

$332,500

2011

$3,651 (−6.9%)

$90,000 + $210,000

$300,000

2010

$3,922 (−3.0%)

$87,000 + $203,000

$290,000

2009

$4,043 (−24.6%)

$96,000 + $224,000

$320,000

2008

$5,360

$98,100 + $228,900

$327,000

*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

5,376 Sq. Ft.

Year renovated

1947

Sq. Ft.

1,100

Year built

1947

Style

Single Family Residential

County

Alameda County

APN

415 006004600

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

Apr 7, 2026 • Active

Building

Install a roof-mounted solar photovoltaic system with an energy storage system. Install a new electrical panel, a backup gateway, and new electrical circuits.

Battery

Electrical

Solar

Jan 4, 2006 • Final

Building

Tear off the existing roofing. Install new sheathing, felt underlayment, and shingles.

Roofing

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: 1
Covered Spaces: 1
Parking Features: Attached, Workshop in Garage

Interior

Bathroom Information
# of Bathrooms Total: 2
# of Bathrooms Full: 1
# of Bathrooms Partial: 1
Other Bathrooms Included Features: Shower Over Tub, Tile, Updated Baths

Interior Features
Interior Features: Den, Tile Counters, Eat-in Kitchen, Updated Kitchen
Appliances: Dishwasher, Disposal, Gas Range, Microwave, Gas Water Heater
Laundry Features: 220 Volt Outlet, Gas Dryer Hookup, In Garage
Street Level Features: 2 Bedrooms, 1.5 Baths
Window Features: Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood Flrs Throughout, Tile, Carpet

Room Information
Kitchen Features: Counter - Tile,Dishwasher,Eat In Kitchen,Garbage Disposal,Gas Range/Cooktop,Microwave,Updated Kitchen
Rooms Total: 5
Fireplace Features: Brick, Living Room, Wood Burning
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Stucco
Building Area Total: 1,100

Exterior Features
Patio And Porch Features: Deck, Patio
Exterior Features: Back Yard, Front Yard, Garden/Play, Storage
Fencing: Fenced
Roof: Shingle

Property Information
Living Area: 1100
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1947

Lot Information
Lot Size Square Feet: 5376
Lot Size Area: 0.13
Lot Size Units: Acres
Lot Size Acres: 0.13
Lot Features: Level, Regular

Utilities

Utility Information
Water Source: Public
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Wall Furnace
Cooling: Ceiling Fan(s)

Location

School Information
High School District: HAYWARD

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 1,100
Stories: 1.0
Lot Size: 5,376 square feet
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1947
County: Alameda County
APN: 415 006004600

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 • 1.4mi

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'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

$760,000 – $920,000

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Home values near 21336 Rizzo Ave

Data from public records.

Address	Redfin Estimate
21348 Rizzo Avenue, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$829,537
21366 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1531 Sq. Ft.	$887,629

Address	Redfin Estimate
21342 Rizzo Avenue, Castro Valley, CA 2 Beds \| 1 Baths \| 1100 Sq. Ft.	$764,496
21360 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 1371 Sq. Ft.	$975,169

Address	Redfin Estimate
21331 Rizzo Avenue, Castro Valley, CA 3 Beds \| 2 Baths \| 2224 Sq. Ft.	$1,093,126
21319 Rizzo Avenue, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$822,001

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2004. 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 21336 Rizzo Ave

Tax history for 21336 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 21336 Rizzo Ave

More real estate resources