$1,006,847
$22K since sold in July 2026$7,000 since July
This home's estimate is 6.7% higher than the average sale price ($943K) of 6 comparable homes.
Claim this home to receive a free report every month with insights on the changing estimate.
Sold on Jul 2026
$984,777
3
bd•
2 ba
•
1,650
sq ft
21451 Rizzo Ave, Castro Valley, CA 94546
Is this your home?
Track this home’s value and nearby sales activity
About this home
Single-familyProperty Type
1946Year Built
6,600 sq ftLot Size
$597Price/Sq.Ft.
1 garage spacesParking
Listed by Fred Nelson •DRE #01878084 • Coldwell Banker Realty
•707-503-9346 (agent)
•fred.nelson1@me.com (agent)
Listed by David Smadbeck •DRE #01392341 • Coldwell Banker Realty
•415-497-9604 (agent)
•david@marinprop.com (agent)
Bought with Dannie Baker •DRE #02036950 • Legacy Real Estate & Assoc.
Bought with Kristy Peixoto •DRE #01256255 • Legacy Real Estate & Assoc.
•510-909-4286 (agent)
Redfin checked: a minute ago
•Source:BAREIS #326037954
Redfin Estimate
Market trends in 94546, CA
Last updated July 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
Provided by Redfin
Homeowner tools
More resources
View owner dashboard
Track your estimate and nearby sale activity
Edit home facts
Review property details and add renovations
Manage photos
Update home photos or make them private
Rental estimate
Est. $3,878 per month, based on comparable rentals
Property details
Around this home
Local insights from Redfin agents
Sun exposure
84/ 100
Very good sunlight
SunscoreThere appears to be minimal shading by surrounding buildings, terrain, and vegetation.
JuneDecember
Provided by Shadowmap
Property information provided by BAREIS when last listed in 2026. This data may not match . Learn more.
More real estate resources
- Cities
- Neighborhoods
- Zip Codes
- Popular Searches
| San Jose homes for sale | |||
| San Francisco homes for sale | |||
| Fremont homes for sale |
Find us
Subsidiaries
Affiliated Business
United States
CanadaCopyright: © 2026 Redfin. All rights reserved.
Updated September 2025: By searching, you agree to the Terms of Use, and Privacy Policy.
Do not sell or share my personal information.
REDFIN and all REDFIN variants, WALK SCORE, and the R logos, are trademarks of Redfin Corporation, registered or pending in the USPTO.
California DRE #01521930
Redfin is licensed to do business in New York as Redfin Real Estate. NY Standard Operating Procedures
New Mexico Real Estate Licenses
TREC: Info About Brokerage Services, Consumer Protection Notice
All mortgage lending products and information are provided by Rocket Mortgage, LLC | NMLS #3030; www.NMLSConsumerAccess.org. Licensed in 50 states. This site is not authorized by the New York State Department of Financial Services for mortgage solicitation or loan applications activities related to properties located in the State of New York.
Redfin Corporation is an affiliated business of Rocket Limited Partnership. Each company, and their subsidiaries, are separate legal entities operated and managed through its own management and governance structures.
If you are using a screen reader, or having trouble reading this website, please call Redfin Customer Support for help at 1-844-759-7732.
REDFIN IS COMMITTED TO AND ABIDES BY THE FAIR HOUSING ACT AND EQUAL OPPORTUNITY ACT. READ REDFIN'S FAIR HOUSING POLICY AND THE NEW YORK STATE FAIR HOUSING NOTICE.
GreatSchools Ratings provided by GreatSchools.org.