bridgeMLS, Bay East AOR, or Contra Costa AOR #10506566
Apr 13, 1998
Sold
$179,500
$175/sq ft
Feb 4, 1998
Listed
*
There are no remarks available.
bridgeMLS, Bay East AOR, or Contra Costa AOR #28506566
Apr 13, 1998
Sold
$179,500
$175/sq ft
Feb 23, 1998
Listing Removed
—
Feb 4, 1998
Listed
*
Year
Property tax
Land + Additions
Assessment*
2025
$4,308 (+2.7%)
$87,781 + $204,552
$292,333
2024
$4,195 (+2.2%)
$86,060 + $200,541
$286,601
2023
$4,105 (+2.6%)
$84,373 + $196,610
$280,983
2022
$4,002 (+1.4%)
$81,097 + $188,976
$270,073
2021
$3,948 (+1.5%)
$81,097 + $188,976
$270,073
2020
$3,892 (−0.6%)
$79,507 + $185,271
$264,778
2019
$3,915 (+6.1%)
$78,692 + $183,372
$262,064
2018
$3,691 (+2.6%)
$77,149 + $179,777
$256,926
2017
$3,598 (+6.3%)
$74,154 + $172,797
$246,951
2016
$3,385 (+3.0%)
$74,154 + $172,797
$246,951
2015
$3,287 (+5.8%)
$72,700 + $169,410
$242,110
2014
$3,108 (+1.6%)
$70,206 + $163,597
$233,803
2013
$3,060 (+2.3%)
$70,206 + $163,597
$233,803
2012
$2,991 (+2.5%)
$69,889 + $162,859
$232,748
2011
$2,918 (+2.2%)
$68,519 + $159,666
$228,185
2010
$2,855 (−1.1%)
$67,176 + $156,536
$223,712
2009
$2,887 (+4.7%)
$66,674 + $155,367
$222,041
2008
$2,758
$66,832 + $155,736
$222,568
Tax history for 21724 Ada St
Year
Property tax
Land + Additions
Assessment*
2025
$4,308 (+2.7%)
$87,781 + $204,552
$292,333
2024
$4,195 (+2.2%)
$86,060 + $200,541
$286,601
2023
$4,105 (+2.6%)
$84,373 + $196,610
$280,983
2022
$4,002 (+1.4%)
$81,097 + $188,976
$270,073
2021
$3,948 (+1.5%)
$81,097 + $188,976
$270,073
2020
$3,892 (−0.6%)
$79,507 + $185,271
$264,778
2019
$3,915 (+6.1%)
$78,692 + $183,372
$262,064
2018
$3,691 (+2.6%)
$77,149 + $179,777
$256,926
2017
$3,598 (+6.3%)
$74,154 + $172,797
$246,951
2016
$3,385 (+3.0%)
$74,154 + $172,797
$246,951
2015
$3,287 (+5.8%)
$72,700 + $169,410
$242,110
2014
$3,108 (+1.6%)
$70,206 + $163,597
$233,803
2013
$3,060 (+2.3%)
$70,206 + $163,597
$233,803
2012
$2,991 (+2.5%)
$69,889 + $162,859
$232,748
2011
$2,918 (+2.2%)
$68,519 + $159,666
$228,185
2010
$2,855 (−1.1%)
$67,176 + $156,536
$223,712
2009
$2,887 (+4.7%)
$66,674 + $155,367
$222,041
2008
$2,758
$66,832 + $155,736
$222,568
*Taxable value of land and structures on it ("additions") is determined regularly by local assessors and does not affect market price.
Public record
Public record
Zoning
Beds
3
Baths
1
Stories
1
Lot width
—
Lot depth
—
Lot size
4,984 Sq. Ft.
Year renovated
1948
Sq. Ft.
1,028
Year built
1948
Style
Single Family Residential
County
Alameda County
APN
415 009009300
Parking Spaces
—
Basement
—
Accessible
—
HOA Dues
—
Garage
—
Features
—
Last updated by owner on Sep 16, 2026.
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
Property details
Parking
Parking Information
Garage Spaces: 1
Covered Spaces: 1
Parking Features: Attached
Interior
Bathroom Information
# of Bathrooms Total: 1
# of Bathrooms Full: 1
Interior Features
Street Level Features: 3 Bedrooms, 1 Bath, Main Entry
Fireplaces Total: 1
Has Fireplace
Flooring: Hardwood
Room Information
Kitchen Features: Eat-in Kitchen
Rooms Total: 5
Fireplace Features: Free Standing
Exterior
Building Information
Building Area Total: 1,028
Exterior Features
Roof: Shingle
Property Information
Living Area: 1028
Living Area Units: Square Feet
Property Type: Residential
Property Sub Type: Single Family Residence
Year Built: 1948
Lot Information
Lot Size Square Feet: 4984
Lot Size Area: 0.11
Lot Size Units: Acres
Lot Size Acres: 0.11
Utilities
Utility Information
Water Source: Public
Heating & Cooling
Has Heating
Heating: Floor Furnace
Location
School Information
High School District: Castro Valley (510) 537-3000
Public facts
Beds: 3
Baths: 1.0
Sq. Ft.: 1,028
Stories: 1.0
Lot Size: 4,984 square feet
Style: Single Family Residential
Year Built: 1948
Year Renovated: 1948
County: Alameda County
APN: 415 009009300
Home facts updated by county records on Sep 16, 2026
Around this home
Schools
Fairview Elementary School
Public K-6 • Assigned • 1.3mi
2/10
Bret Harte Middle School
Public 7-8 • Assigned • 1.3mi
4/10
Hayward High School
Public 9-12 • Assigned • 1.3mi
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...
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 1998. This data may not match public records. Learn more.