Alameda County  »  21249 Oak St

21249 Oak Street, Castro Valley, CA 94546 Property Information

21249 Oak Street, Castro Valley, CA 94546 Property Information

  • General
  • Owner
  • Documents
  • Tax
  • Permits
  • Neighborhood
Unlock this property report with a free account.

Access up-to-date information from property owner names to sales history, tax info, title documents, mortgages, development, maps, permits and more.
Sign Up Now
Research 100M+ property records powered by:
  • 2000+ governmental and public data sources
  • 80 dedicated analysts and researchers
  • 20+ years of real estate experience
Learn More

Photo & Map Show Hide

21249 Oak Street, Castro Valley, CA 94546
static Mapbox map

Address

Primary address 21249 Oak Street, Castro Valley
Zip code 94546
County Alameda
Parcel ID 415-170-7-2

Sales & Tax Overview for 21249 Oak Street, Castro Valley

View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.

Property tax $0

Lot & Building Information for 21249 Oak Street, Castro Valley

Building class Exempt Public Agency (0300)
Unlock this property report with a free account.

Access up-to-date information from property owner names to sales history, tax info, title documents, mortgages, development, maps, permits and more.
Sign Up Now

Zoning, Use & Area Overview


School district Hayward Unif SCH

View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.

Other Property Data for 21249 Oak Street, Castro Valley

Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:

  • • Improvements for 21249 Oak Street, Castro Valley , including their type, square footage, grade and when they were built.
  • • Development maps such as planimetric, zoning, land use and urban landscape maps (building age and stories).
Unlock all property data with a free account.
Sign up

About 21249 Oak Street, Castro Valley

Ownership Information

View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.

Real Estate Reports:
Locked-In Owners, Mobile Renters: Homeowners Stay Put as Renters Move 3.7x More Across Largest U.S. Cities 
Laura Pop-Badiu, May 07, 2026 Locked-In Owners, Mobile Renters: Homeowners Stay Put as Renters Move 3.7x More Across Largest U.S. Cities 
Renters became the primary drivers of long-distance mobility across the largest U.S. cities, moving 3.7 times more than owners in 2024, as high mortgage rates and housing costs kept many homeowners in place.
$4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Eliza Theiss, Apr 23, 2026 $4.6M Hudson Yards Maintains Top Spot, Luxury Sales in Malba Set $2.5M Price Record for Queens
Despite prices declining, Hudson Yards remained the most expensive NYC neighborhood, but TriBeCa’s growth closed the gap to under $400,000, while Malba set a new historic price record for Queens at $2.5 million, securing the highest ranking ever for the borough at #5.
2026 Q1 Foreclosure Report: Brooklyn Filings Fall Sharply, Bronx & Staten Island Hit New Peaks
Eliza Theiss, Apr 15, 2026 2026 Q1 Foreclosure Report: Brooklyn Filings Fall Sharply, Bronx & Staten Island Hit New Peaks
Behind a deceptively mild citywide downtick, borough foreclosure markets pulled into significantly diverging paths as Brooklyn cases were nearly halved and the Bronx hit a new, record high. Meanwhile, Queens remained unchanged, Staten Island surged back up and Manhattan cooled slowly.
Research 100M+ property records powered by:
  • 2000+ governmental and public data sources
  • 80 dedicated analysts and researchers
  • 20+ years of real estate experience
Learn More

Past Sales & Property History for 21249 Oak Street, Castro Valley

Create a free account to view the complete sales history for 21249 Oak Street, Castro Valley, including title documents, transfer conditions, mortgages and liens.

No recorded sales for this property.

More about Alameda County Property Records

Title Documents for 21249 Oak Street, Castro Valley

Data not available for this property.

Property Taxes for 21249 Oak Street, Castro Valley

Access detailed property tax data for 21249 Oak Street, Castro Valley, CA 94546. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.

Tax year: 2025-2026
Property tax $0
Market value $0

More about Alameda County Property Taxes

Assessment History for 21249 Oak Street, Castro Valley

Data not available for this property.

Permits for 21249 Oak Street, Castro Valley

The complete history of permits filed for 21249 Oak Street, Castro Valley, including new construction or demolition permits, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.

Data not available for this property.

Castro Valley residential market stats

Median Sale Price
$989,000
-8.4% YoY
Median Price/Sqft
$669
3.4% YoY
Alameda County Median Sale Price
$965,000
-7.1% YoY

Access a detailed real estate market overview of Castro Valley so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Castro Valley and compare it to other neighborhoods in Alameda County.

Check out recently sold homes in Castro-Valley and see how their prices compare.

Transportation

Access the detailed traffic volume map for 21249 Oak Street, Castro Valley to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.

View daily traffic map

Schools


Data provided by GreatSchools.org © 2025. All rights reserved.

Nearby ZIP Codes for 21249 Oak Street, Castro Valley

Not sure if we cover all the data-points you need? View sample full report View sample full report