21422 Rizzo Ave is a 1,764 square foot house on a 7,375 square foot lot with 3 bedrooms and 2 bathrooms. - it last sold on April 02, 2014 for $340,000. Based on Redfin's Castro Valley data, we estimate the home's value is $628,789.
Single-familyProperty Type
1945Year Built
7,375 sq ftLot Size
$356Est. Price/Sq.Ft.
1 car garageParking
Source:Public Records
Redfin Estimate
$628,789
$289K since sold in April 2014$24K since October
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 24.4% lower than the average sale price ($831K) of 6 comparable homes.
bridgeMLS, Bay East AOR, or Contra Costa AOR #40633442
Sep 30, 2013
Listing Removed
—
Public Records
Mar 2, 1998
Sold
$150,000
$85/sq ft
Year
Property tax
Land + Additions
Assessment*
2025
$8,388 (+2.5%)
$155,664 + $486,872
$642,536
2024
$8,181 (+1.9%)
$152,613 + $477,328
$629,941
2023
$8,030 (+2.3%)
$149,621 + $467,971
$617,592
2022
$7,848 (+14.8%)
$143,812 + $449,802
$593,614
2021
$6,837 (+8.0%)
$143,812 + $449,802
$593,614
2020
$6,331 (−0.7%)
$140,993 + $363,985
$504,978
2019
$6,377 (+6.4%)
$139,548 + $325,612
$465,160
2018
$5,992 (+2.6%)
$136,813 + $319,230
$456,043
2017
$5,843 (+6.0%)
$131,501 + $306,837
$438,338
2016
$5,511 (+2.7%)
$131,501 + $306,837
$438,338
2015
$5,368 (+99.5%)
$128,923 + $300,821
$429,744
2014
$2,691 (+1.7%)
$58,613 + $136,765
$195,378
2013
$2,645 (+2.4%)
$58,613 + $136,765
$195,378
2012
$2,584 (+2.9%)
$58,349 + $136,148
$194,497
2011
$2,511 (+2.2%)
$57,205 + $133,479
$190,684
2010
$2,458 (−1.0%)
$56,083 + $130,862
$186,945
2009
$2,482 (+5.0%)
$55,665 + $129,885
$185,550
2008
$2,365
$55,797 + $130,193
$185,990
Tax history for 21422 Rizzo Ave
Year
Property tax
Land + Additions
Assessment*
2025
$8,388 (+2.5%)
$155,664 + $486,872
$642,536
2024
$8,181 (+1.9%)
$152,613 + $477,328
$629,941
2023
$8,030 (+2.3%)
$149,621 + $467,971
$617,592
2022
$7,848 (+14.8%)
$143,812 + $449,802
$593,614
2021
$6,837 (+8.0%)
$143,812 + $449,802
$593,614
2020
$6,331 (−0.7%)
$140,993 + $363,985
$504,978
2019
$6,377 (+6.4%)
$139,548 + $325,612
$465,160
2018
$5,992 (+2.6%)
$136,813 + $319,230
$456,043
2017
$5,843 (+6.0%)
$131,501 + $306,837
$438,338
2016
$5,511 (+2.7%)
$131,501 + $306,837
$438,338
2015
$5,368 (+99.5%)
$128,923 + $300,821
$429,744
2014
$2,691 (+1.7%)
$58,613 + $136,765
$195,378
2013
$2,645 (+2.4%)
$58,613 + $136,765
$195,378
2012
$2,584 (+2.9%)
$58,349 + $136,148
$194,497
2011
$2,511 (+2.2%)
$57,205 + $133,479
$190,684
2010
$2,458 (−1.0%)
$56,083 + $130,862
$186,945
2009
$2,482 (+5.0%)
$55,665 + $129,885
$185,550
2008
$2,365
$55,797 + $130,193
$185,990
*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
R1
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
Jun 26, 2023 • Final
Building
Tear off existing roofing and install new composition asphalt shingles on a residential building. Install new underlayment, metal roof jacks, and vents. Repair dry rot as needed without adding new sheeting.
Roofing
Mar 1, 2021 • Final
Building
Remove an existing deck and build a new addition to the rear of a single-family home consisting of a master bedroom with a bathroom and walk-in closet, plus an additional bedroom. Legalize an existing garage addition and an attached shed. Convert a bedroom adjacent to the garage into a storage room.
Addition
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
Interior
Room Information
# of Rooms: 6
Exterior
Exterior Information
Physical Condition: Good
Building Style Type: U-Shape
Construction Type: Wood
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,764
Building Sq. Ft: 1,764
# of Stories: 1
Legal Description: TRACT 662 LOT 28,29
Parking & Garage Information
# of Parking Spaces: 1
Parking Type: Undefined Type - 1 Car Garage
Garage / Carport Type: Undefined Type - 1 Car
Lot Information
# of Buildings: 1
Land Sq. Ft: 7,375
Legal Lot Number: 28,29
Municipality Name: HAYWARD UNINCORP
Acres: 0.1693
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 2.0
Sq. Ft.: 1,764
Stories: 1.0
Lot Size: 7,375 square feet
Style: Single Family Residential
Year Built: 1945
Year Renovated: 1974
County: Alameda County
APN: 415 006003600
Home facts updated by county records on Sep 16, 2026
Around this home
Schools
K - 12
Preschool & daycare
Fairview Elementary School
Public K-6 • Assigned • 1.6mi
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 remains a highly competitive market. On average, homes are selling for 103.7% of their asking price, with nearly 60% of properties closing above list price.
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...