OFF MARKET

Off Market Oct 2016 for $650K

$1,074,466

Est. refi paymentEst. refi $5,122/mo

•

1,633

sq ft

21409 Rizzo Ave, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1946Year Built

9,100 sq ftLot Size

$658Est. Price/Sq.Ft.

1 car garageParking

Listed by Alejandrino Lola •DRE #01444448 • Lola Properties & Realty

Bought with Rosel Trolan •DRE #01374570 • Century 21 Cornerstone

Redfin checked: 3 minutes ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40754303

Redfin Estimate

$1,074,466

$424K since sold in October 2016$8,000 since August

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 1.7% lower than the average sale price ($1.09M) 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 21, 2026
$880,000
B
3 beds2 baths1,476 sq ft
20872 /74 Wilbeam Ave, Castro Valley, CA 94546
SOLD JUL 28, 2026
$844,500
C
3 beds2 baths1,586 sq ft
2305 Star Ave, Hayward, CA 94546
SOLD APR 10, 2026
$1,275,000
D
3 beds2.5 baths2,239 sq ft
21928 Baywood Ave, Castro Valley, CA 94546
BOUGHT WITH REDFIN JUL 21, 2026
$1,400,000
E
4 beds2 baths1,651 sq ft
3445 Badding Rd, Castro Valley, CA 94546
SOLD JUL 24, 2026
$1,175,000
F
4 beds3 baths1,683 sq ft
21132 Tyee Ct, Castro Valley, CA 94546

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Earn from this home

Sell

$607,057

Est. take-home

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Refinance

Est. cash available

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Rent

$3,846/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 21409 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$9,867 (+2.5%)

$278,534 + $475,829

$754,363

2024

$9,625 (+1.8%)

$278,534 + $475,829

$754,363

2023

$9,452 (+2.3%)

$273,074 + $466,502

$739,576

2022

$9,242 (+1.0%)

$262,471 + $448,388

$710,859

2021

$9,146 (−4.1%)

$262,471 + $448,388

$710,859

2020

$9,537 (+4.8%)

$257,325 + $439,597

$696,922

2019

$9,098 (+6.6%)

$254,688 + $435,092

$689,780

2018

$8,537 (+1.5%)

$249,696 + $426,564

$676,260

2017

$8,408 (+125.4%)

$240,000 + $410,000

$650,000

2016

$3,731 (+2.9%)

$240,000 + $410,000

$650,000

2015

$3,626 (+5.7%)

$79,684 + $185,929

$265,613

2014

$3,431 (+1.5%)

$76,950 + $179,550

$256,500

2013

$3,381 (+2.2%)

$76,950 + $179,550

$256,500

2012

$3,308 (+2.3%)

$76,602 + $178,739

$255,341

2011

$3,235 (+2.2%)

$75,100 + $175,235

$250,335

2010

$3,166 (−1.2%)

$73,628 + $171,799

$245,427

2009

$3,203 (+4.4%)

$73,078 + $170,516

$243,594

2008

$3,067

$73,252 + $170,921

$244,173

Tax history for 21409 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$9,867 (+2.5%)

$278,534 + $475,829

$754,363

2024

$9,625 (+1.8%)

$278,534 + $475,829

$754,363

2023

$9,452 (+2.3%)

$273,074 + $466,502

$739,576

2022

$9,242 (+1.0%)

$262,471 + $448,388

$710,859

2021

$9,146 (−4.1%)

$262,471 + $448,388

$710,859

2020

$9,537 (+4.8%)

$257,325 + $439,597

$696,922

2019

$9,098 (+6.6%)

$254,688 + $435,092

$689,780

2018

$8,537 (+1.5%)

$249,696 + $426,564

$676,260

2017

$8,408 (+125.4%)

$240,000 + $410,000

$650,000

2016

$3,731 (+2.9%)

$240,000 + $410,000

$650,000

2015

$3,626 (+5.7%)

$79,684 + $185,929

$265,613

2014

$3,431 (+1.5%)

$76,950 + $179,550

$256,500

2013

$3,381 (+2.2%)

$76,950 + $179,550

$256,500

2012

$3,308 (+2.3%)

$76,602 + $178,739

$255,341

2011

$3,235 (+2.2%)

$75,100 + $175,235

$250,335

2010

$3,166 (−1.2%)

$73,628 + $171,799

$245,427

2009

$3,203 (+4.4%)

$73,078 + $170,516

$243,594

2008

$3,067

$73,252 + $170,921

$244,173

*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

9,100 Sq. Ft.

Year renovated

1946

Sq. Ft.

1,633

Year built

1946

Style

Single Family Residential

County

Alameda County

APN

415 006006000

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 7, 2018 • Final

Building

Install a roof-mounted photovoltaic system and upgrade the main electrical service panel.

Electrical

Electric meter

Solar

Dec 12, 2001 • Final

Building

Remove existing shingles from the pitched roof and install new plywood sheathing. Install thirty-year three-tab fiberglass composition shingles and rubberoid roofing on the flat sections. All materials must be Class A fire rated.

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, Enclosed

Interior

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

Interior Features
Interior Features: No Additional Rooms, Laminate Counters, Eat-in Kitchen
Appliances: Free-Standing Range
Laundry Features: 220 Volt Outlet, Gas Dryer Hookup, Hookups Only, Laundry Room
Street Level Features: 3 Bedrooms, 2 Baths, Main Entry
Window Features: Double Pane Windows, Window Coverings
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood, Linoleum, Tile, Vinyl, Carpet

Room Information
Kitchen Features: 220 Volt Outlet,Counter - Laminate,Eat In Kitchen,Range/Oven Free Standing
Rooms Total: 7
Fireplace Features: Brick, Family Room
Basement: Crawl Space

Exterior

Building Information
Construction Materials: Wood Siding
Building Area Total: 1,633
Foundation Details: Raised

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

Property Information
Living Area: 1633
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1946

Lot Information
Other Structures: Shed(s)
Lot Size Square Feet: 9100
Lot Size Area: 0.208907
Lot Size Units: Acres
Lot Size Acres: 0.208907
Lot Features: Level
Zoning: 1001

Utilities

Utility Information
Water Source: Public
Electric: 220 Volts in Kitchen
Sewer: Public Sewer

Heating & Cooling
Has Heating
Heating: Forced Air, Natural Gas
Cooling: Ceiling Fan(s), No Air Conditioning

Location

Homeowners Association Information
Pets Allowed: Yes

Public facts

Beds: 3
Baths: 2.0
Sq. Ft.: 1,633
Stories: 1.0
Lot Size: 9,100 square feet
Style: Single Family Residential
Year Built: 1946
Year Renovated: 1946
County: Alameda County
APN: 415 006006000

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

$1.02M – $1.24M

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New listings for sale in 94546

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COMING SOON

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COMING SOON

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HOT HOME

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Home values near 21409 Rizzo Ave

Data from public records.

Address	Redfin Estimate
21331 Rizzo Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 2224 Sq. Ft.	$1,156,792
21360 Rizzo Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 1371 Sq. Ft.	$1,047,120

Address	Redfin Estimate
21366 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1531 Sq. Ft.	$890,516
21319 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$820,784

Address	Redfin Estimate
21433 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1277 Sq. Ft.	$930,618
21337 Rizzo Ave, Castro Valley, CA 3 Beds \| 1 Baths \| 1100 Sq. Ft.	$941,432

Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2016. 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 21409 Rizzo Ave

Tax history for 21409 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 21409 Rizzo Ave

More real estate resources