21403 Rizzo Ave, Castro Valley, CA 94546

Off market dec 2003 for $415K

$866,700

Est. refi paymentEst. refi $2,763/mo

•

1,245

sq ft

21403 Rizzo Ave, Castro Valley, CA 94546

About this home

Single-familyProperty Type

1946Year Built

6,363 sq ftLot Size

$696Est. Price/Sq.Ft.

1 car garageParking

Listed by Jesse Leon •DRE #00690760 • Simply Real Estate

Bought with Sandy Parkins •DRE #01347465 • BHG Tri-Valley Realty

Redfin checked: a minute ago

•Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #11203677

Redfin Estimate

$866,700

$452K since sold in December 2003$6,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 2.7% lower than the average sale price ($890K) 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 APR 27, 2026
$768,000
B
3 beds1 bath871 sq ft
2226 Vegas Ave, Castro Valley, CA 94546
SOLD JUL 20, 2026
$1,045,000
C
3 beds2 baths1,314 sq ft
3228 Kerr St, Castro Valley, CA 94546
SOLD JUL 28, 2026
$844,500
D
3 beds2 baths1,586 sq ft
2305 Star Ave, Castro Valley, CA 94546
SOLD MAR 25, 2026
$860,000
E
3 beds1.5 baths1,186 sq ft
1828 Riverbank Ave, Castro Valley, CA 94546
SOLD APR 3, 2026
$840,000
F
3 beds1 bath1,162 sq ft
2690 Watson St, Castro Valley, CA 94546

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Earn from this home

Sell

$703,805

Est. take-home

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Refinance

Est. cash available

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Rent

$3,260/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

VIDEO TOUR
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OPEN WED, 10AM TO 1PM
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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
HOT HOME
$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
See all

Provided by Redfin

Sale history for 21403 Rizzo Ave

Date

Event

Price

bridgeMLS, Bay East AOR, or Contra Costa AOR #11203677

Dec 18, 2003

Sold

$415,000

$333/sq ft

Oct 31, 2003

Listing Removed

—

Aug 30, 2003

Listed

$419,950

$337/sq ft

Public Records

May 12, 2000

Sold

$290,000

$233/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #11046516

May 12, 2000

Sold

$289,950

$233/sq ft

Apr 14, 2000

Listing Removed

—

Mar 25, 2000

Listed

$289,950

$233/sq ft

Public Records

May 31, 1990

Sold

$185,000

$149/sq ft

Year

Property tax

Land + Additions

Assessment*

2025

$7,914 (+2.5%)

$180,542 + $421,265

$601,807

2024

$7,717 (+1.9%)

$177,002 + $413,006

$590,008

2023

$7,573 (+2.3%)

$173,533 + $404,910

$578,443

2022

$7,401 (+1.1%)

$166,795 + $389,188

$555,983

2021

$7,320 (+1.3%)

$166,795 + $389,188

$555,983

2020

$7,224 (−0.7%)

$163,525 + $381,560

$545,085

2019

$7,277 (+6.5%)

$161,850 + $377,650

$539,500

2018

$6,835 (+2.5%)

$158,676 + $370,245

$528,921

2017

$6,665 (+6.0%)

$152,514 + $355,868

$508,382

2016

$6,289 (+9.4%)

$152,514 + $355,868

$508,382

2015

$5,748 (+8.1%)

$149,524 + $348,890

$498,414

2014

$5,318 (+22.1%)

$129,000 + $301,000

$430,000

2013

$4,354 (+8.6%)

$129,000 + $301,000

$430,000

2012

$4,011 (+4.5%)

$103,500 + $241,500

$345,000

2011

$3,839 (−7.8%)

$94,500 + $220,500

$315,000

2010

$4,162 (−0.9%)

$90,000 + $210,000

$300,000

2009

$4,198 (−21.8%)

$100,500 + $234,500

$335,000

2008

$5,370

$100,200 + $233,800

$334,000

Tax history for 21403 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$7,914 (+2.5%)

$180,542 + $421,265

$601,807

2024

$7,717 (+1.9%)

$177,002 + $413,006

$590,008

2023

$7,573 (+2.3%)

$173,533 + $404,910

$578,443

2022

$7,401 (+1.1%)

$166,795 + $389,188

$555,983

2021

$7,320 (+1.3%)

$166,795 + $389,188

$555,983

2020

$7,224 (−0.7%)

$163,525 + $381,560

$545,085

2019

$7,277 (+6.5%)

$161,850 + $377,650

$539,500

2018

$6,835 (+2.5%)

$158,676 + $370,245

$528,921

2017

$6,665 (+6.0%)

$152,514 + $355,868

$508,382

2016

$6,289 (+9.4%)

$152,514 + $355,868

$508,382

2015

$5,748 (+8.1%)

$149,524 + $348,890

$498,414

2014

$5,318 (+22.1%)

$129,000 + $301,000

$430,000

2013

$4,354 (+8.6%)

$129,000 + $301,000

$430,000

2012

$4,011 (+4.5%)

$103,500 + $241,500

$345,000

2011

$3,839 (−7.8%)

$94,500 + $220,500

$315,000

2010

$4,162 (−0.9%)

$90,000 + $210,000

$300,000

2009

$4,198 (−21.8%)

$100,500 + $234,500

$335,000

2008

$5,370

$100,200 + $233,800

$334,000

*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

6,363 Sq. Ft.

Year renovated

1946

Sq. Ft.

1,245

Year built

1946

Style

Single Family Residential

County

Alameda County

APN

415 006005900

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

Parking

Parking Information
Has Attached Garage
Garage Spaces: 1
Covered Spaces: 1
Parking Features: Attached

Interior

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

Interior Features
Interior Features: Dining Area, Formal Dining Room
Appliances: Gas Range
Laundry Features: In Garage
Street Level Features: 3 Bedrooms, 1 Bath, Main Entry
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood

Room Information
Kitchen Features: Gas Range/Cooktop,Other
Rooms Total: 6
Fireplace Features: Living Room, Wood Burning

Exterior

Building Information
Building Area Total: 1,245

Exterior Features
Patio And Porch Features: Deck
Exterior Features: Back Yard, Front Yard, Sprinklers Back, Sprinklers Front
Roof: Shingle

Property Information
Living Area: 1245
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1946

Lot Information
Lot Size Square Feet: 6363
Lot Size Area: 0.14
Lot Size Units: Acres
Lot Size Acres: 0.14
Lot Features: Regular
Zoning: R-1

Utilities

Utility Information
Water Source: Public

Heating & Cooling
Has Heating
Heating: Natural Gas
Cooling: No Air Conditioning

Location

School Information
High School District: Castro Valley (510) 537-3000

Public facts

Beds: 3
Baths: 1.0
Sq. Ft.: 1,245
Stories: 1.0
Lot Size: 6,363 square feet
Style: Single Family Residential
Year Built: 1946
Year Renovated: 1946
County: Alameda County
APN: 415 006005900

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 • 1.4mi

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

$824,000 – $997,000

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Home values near 21403 Rizzo Ave

Data from public records.

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

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

Address	Redfin Estimate
21331 Rizzo Ave, Castro Valley, CA 3 Beds \| 2 Baths \| 2224 Sq. Ft.	$1,093,126
21319 Rizzo Ave, 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 2003. 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 21403 Rizzo Ave

Tax history for 21403 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 21403 Rizzo Ave

More real estate resources