OFF MARKET

Off market dec 2022 for $780K

$947,450

Est. refi paymentEst. refi $4,989/mo

•

2 ba

•

1,455

sq ft

21354 Rizzo Ave, Castro Valley, CA 94546

About this home

Detached 3 bedroom, 3 bath home w/ detached cottage in Castro Valley's Baywood neighborhood. Updated kitchen, large living room w/ fireplace, master bedroom w/ bay window and walk-in-closet. Master bath w/ separate tub/shower and laundry room. Vaulted ceilings, skylight, new carpet, fresh paint. Cottage is detached studio w/ cathedral ceilings, skylight, large kitchen and spacious bath. Large pool size lot, very private! No rear neighbors. Many recent upgrades and maintenance completed to prepare the property for marketing.

Single-familyProperty Type

1947Year Built

9,196 sq ftLot Size

$651Est. Price/Sq.Ft.

1 car garageParking

Listed by Dean Souza •DRE #00967442 • Century 21 Marquis

Bought with Yanling Huang •DRE #01702640 • Outstanding Investment Co.

Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40844022

Redfin Estimate

$947,450

$167K since sold in December 2022$9,000 since September

Recently sold homes
Estimate history
Homes for sale

This home's estimate is 6.6% lower than the average sale price ($1.01M) of 6 comparable homes.

SOLD JUL 21, 2026
$880,000
A
3 beds2 baths1,476 sq ft
20872 /74 Wilbeam Ave, Castro Valley, CA 94546
SOLD JUL 24, 2026
$1,175,000
B
4 beds3 baths1,683 sq ft
21132 Tyee Ct, Castro Valley, CA 94546
SOLD APR 10, 2026
$1,275,000
C
3 beds2.5 baths2,239 sq ft
21928 Baywood Ave, Castro Valley, CA 94546
SOLD JUL 9, 2026
$984,777
D
3 beds2 baths1,650 sq ft
21451 Rizzo Ave, Castro Valley, CA 94546
SOLD JUL 28, 2026
$844,500
E
3 beds2 baths1,586 sq ft
2305 Star Ave, Castro Valley, CA 94546
SOLD SEP 24, 2026
$925,000
F
3 beds2 baths1,539 sq ft
20927 Nunes Ave, Castro Valley, CA 94546

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Earn from this home

Sell

$319,372

Est. take-home

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Refinance

Est. cash available

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Rent

$3,511/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 21354 Rizzo Ave

Date

Event

Price

Public Records

Dec 12, 2022

Sold

$780,000

$536/sq ft

bridgeMLS, Bay East AOR, or Contra Costa AOR #40844022

Jan 18, 2019

Sold

$720,000

$495/sq ft

Nov 14, 2018

Pending

—

Oct 26, 2018

Listed

$699,000

$480/sq ft

+28

Year

Property tax

Land + Additions

Assessment*

2025

$10,629 (+2.5%)

$248,320 + $579,415

$827,735

2024

$10,372 (+1.8%)

$243,453 + $568,058

$811,511

2023

$10,189 (+3.2%)

$238,680 + $556,920

$795,600

2022

$9,872 (+1.0%)

$227,052 + $529,789

$756,841

2021

$9,773 (+1.3%)

$227,052 + $529,789

$756,841

2020

$9,650 (+104.5%)

$222,600 + $519,402

$742,002

2019

$4,719 (+2.1%)

$220,320 + $514,080

$734,400

2018

$4,620 (+6.5%)

$188,667 + $96,608

$285,275

2017

$4,340 (+17.7%)

$181,342 + $92,857

$274,199

2016

$3,688 (+2.9%)

$181,342 + $92,857

$274,199

2015

$3,583 (+5.7%)

$177,786 + $91,037

$268,823

2014

$3,389 (+1.5%)

$171,686 + $87,913

$259,599

2013

$3,339 (+2.3%)

$171,686 + $87,913

$259,599

2012

$3,265 (+2.3%)

$170,911 + $87,516

$258,427

2011

$3,191 (+2.2%)

$167,561 + $85,801

$253,362

2010

$3,122 (−1.2%)

$164,276 + $84,119

$248,395

2009

$3,159 (+4.5%)

$163,049 + $83,491

$246,540

2008

$3,022

$163,437 + $83,689

$247,126

Tax history for 21354 Rizzo Ave

Year

Property tax

Land + Additions

Assessment*

2025

$10,629 (+2.5%)

$248,320 + $579,415

$827,735

2024

$10,372 (+1.8%)

$243,453 + $568,058

$811,511

2023

$10,189 (+3.2%)

$238,680 + $556,920

$795,600

2022

$9,872 (+1.0%)

$227,052 + $529,789

$756,841

2021

$9,773 (+1.3%)

$227,052 + $529,789

$756,841

2020

$9,650 (+104.5%)

$222,600 + $519,402

$742,002

2019

$4,719 (+2.1%)

$220,320 + $514,080

$734,400

2018

$4,620 (+6.5%)

$188,667 + $96,608

$285,275

2017

$4,340 (+17.7%)

$181,342 + $92,857

$274,199

2016

$3,688 (+2.9%)

$181,342 + $92,857

$274,199

2015

$3,583 (+5.7%)

$177,786 + $91,037

$268,823

2014

$3,389 (+1.5%)

$171,686 + $87,913

$259,599

2013

$3,339 (+2.3%)

$171,686 + $87,913

$259,599

2012

$3,265 (+2.3%)

$170,911 + $87,516

$258,427

2011

$3,191 (+2.2%)

$167,561 + $85,801

$253,362

2010

$3,122 (−1.2%)

$164,276 + $84,119

$248,395

2009

$3,159 (+4.5%)

$163,049 + $83,491

$246,540

2008

$3,022

$163,437 + $83,689

$247,126

*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.

Zoning and permits

Zoning
Permits

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

Room Information
# of Rooms: 6

Exterior

Exterior Information
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Average

Property Information
Living Sq. Ft: 1,455
Building Sq. Ft: 1,455
# of Units: 1
# of Stories: 1
Legal Description: TRACT 662 LOT 36

Lot Information
# of Buildings: 1
Land Sq. Ft: 9,196
Legal Lot Number: 36
Municipality Name: HAYWARD UNINCORP
Acres: 0.2111
County Use Description: SINGLE FAMILY RESIDENTIAL HOME

Financial

Assessor Information
Assessment Year: 2026

Public facts

Beds: 2
Baths: 2.0
Sq. Ft.: 1,455
Stories: 1.0
Lot Size: 9,196 square feet
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1947
County: Alameda County
APN: 415 006004300

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

$901,000 – $1.09M

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Nearby similar homes

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3D WALKTHROUGH

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3D & VIDEO TOUR

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4 beds2.5 baths1,980 sq ft

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OPEN WED, 10AM TO 1PMVIDEO TOUR

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New listings for sale in 94546

OPEN WED, 10AM TO 1PMVIDEO TOUR

$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

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3 beds2 baths1,795 sq ft

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Home values near 21354 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

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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 21354 Rizzo Ave

Tax history for 21354 Rizzo Ave

Zoning and permits

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 21354 Rizzo Ave

More real estate resources