21330 Rizzo Ave is a 1,450 square foot house on a 6,000 square foot lot with 3 bedrooms and 1 bathroom. Based on Redfin's Castro Valley data, we estimate the home's value is $783,599.
Single-familyProperty Type
1947Year Built
6,000 sq ftLot Size
$540Est. Price/Sq.Ft.
Source:Public Records
Redfin Estimate
$783,599
$9,000 since September
Recently sold homes
Estimate history
Homes for sale
This home's estimate is 11.6% lower than the average sale price ($886K) of 6 comparable homes.
As the MLS and public records start to fill up, we'll list the details here.
Year
Property tax
Land + Additions
Assessment*
2025
$3,824 (+2.8%)
$75,230 + $175,537
$250,767
2024
$3,722 (+2.3%)
$73,755 + $172,096
$245,851
2023
$3,639 (+2.6%)
$72,309 + $168,721
$241,030
2022
$3,545 (+1.4%)
$69,501 + $162,171
$231,672
2021
$3,495 (+1.5%)
$69,501 + $162,171
$231,672
2020
$3,444 (−0.6%)
$68,139 + $158,991
$227,130
2019
$3,464 (+6.0%)
$67,440 + $157,362
$224,802
2018
$3,269 (−12.6%)
$66,118 + $154,276
$220,394
2017
$3,741 (+24.9%)
$63,551 + $148,287
$211,838
2016
$2,995 (−9.2%)
$63,551 + $148,287
$211,838
2015
$3,299 (+20.1%)
$62,306 + $145,380
$207,686
2014
$2,747 (+1.7%)
$60,168 + $140,393
$200,561
2013
$2,701 (+2.4%)
$60,168 + $140,393
$200,561
2012
$2,639 (+2.8%)
$59,896 + $139,759
$199,655
2011
$2,566 (+2.2%)
$58,722 + $137,019
$195,741
2010
$2,511 (−1.0%)
$57,571 + $134,332
$191,903
2009
$2,536 (+4.9%)
$57,141 + $133,329
$190,470
2008
$2,418
$57,276 + $133,646
$190,922
Tax history for 21330 Rizzo Ave
Year
Property tax
Land + Additions
Assessment*
2025
$3,824 (+2.8%)
$75,230 + $175,537
$250,767
2024
$3,722 (+2.3%)
$73,755 + $172,096
$245,851
2023
$3,639 (+2.6%)
$72,309 + $168,721
$241,030
2022
$3,545 (+1.4%)
$69,501 + $162,171
$231,672
2021
$3,495 (+1.5%)
$69,501 + $162,171
$231,672
2020
$3,444 (−0.6%)
$68,139 + $158,991
$227,130
2019
$3,464 (+6.0%)
$67,440 + $157,362
$224,802
2018
$3,269 (−12.6%)
$66,118 + $154,276
$220,394
2017
$3,741 (+24.9%)
$63,551 + $148,287
$211,838
2016
$2,995 (−9.2%)
$63,551 + $148,287
$211,838
2015
$3,299 (+20.1%)
$62,306 + $145,380
$207,686
2014
$2,747 (+1.7%)
$60,168 + $140,393
$200,561
2013
$2,701 (+2.4%)
$60,168 + $140,393
$200,561
2012
$2,639 (+2.8%)
$59,896 + $139,759
$199,655
2011
$2,566 (+2.2%)
$58,722 + $137,019
$195,741
2010
$2,511 (−1.0%)
$57,571 + $134,332
$191,903
2009
$2,536 (+4.9%)
$57,141 + $133,329
$190,470
2008
$2,418
$57,276 + $133,646
$190,922
*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
Jul 29, 2002 • Final
Building
Tear off and replace the roof with composition shingles. Install new plywood over existing skip sheathing.
Roofing
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: 7
Exterior
Exterior Information
Building Style Type: L-Shape
Construction Type: Wood
Building Construction Quality: Average
Property Information
Living Sq. Ft: 1,450
Building Sq. Ft: 1,450
# of Units: 1
# of Stories: 1
Legal Description: TRACT 662 LOT 40,41
Lot Information
# of Buildings: 1
Land Sq. Ft: 6,000
Legal Lot Number: 40,41
Municipality Name: HAYWARD UNINCORP
Acres: 0.1377
County Use Description: SINGLE FAMILY RESIDENTIAL HOME
Financial
Assessor Information
Assessment Year: 2026
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,450
Stories: 1.0
Lot Size: 6,000 square feet
Style: Single Family Residential
Year Built: 1947
Year Renovated: 1951
County: Alameda County
APN: 415 006004700
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 • 1.5mi
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...