$658,474
$82K since sold in May 2025$30K since August
This home's estimate is 17.6% lower than the average sale price ($799K) of 6 comparable homes.
Claim this home to receive a free report every month with insights on the changing estimate.
OFF MARKET
Off Market May 2025 for $740K
$658,474
Est. refi paymentEst. refi $4,789/mo
2
bd•
1 ba
•
1,070
sq ft
21463 Rizzo Ave, Castro Valley, CA 94546
About this home
Single-familyProperty Type
1942Year Built
6,670 sq ftLot Size
$615Est. Price/Sq.Ft.
1 spaceParking
Listed by Mike Kell •DRE #00476640 • Kell Properties
Bought with Elaine Garcia •DRE #01757355 • BHHS Drysdale Properties
Source:bridgeMLS, Bay East AOR, or Contra Costa AOR #40386334
Redfin Estimate
Earn from this home
Sell
$44,365
Est. take-home
List your home with Redfin and save $3,292
Refinance
$0
Est. cash available
Get cash now or lower your monthly rate
Rent
$3,044/mo
Redfin rental estimate
List your home for rent
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
Provided by Redfin
Property details
Around this home
Lifestyle
Provided by Walk Score and Local Logic
Local insights from Redfin agents
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.
JuneDecember
Provided by Shadowmap
More real estate resources
- Zip Codes
- Neighborhoods
- Cities
- Popular Searches
| 94541 homes for sale | |||
| 94544 homes for sale | |||
| 94546 homes for sale | |||
| 94580 homes for sale | |||
| 94583 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.