15904 Windsor Dr, Castro Valley (San Leandro), CA 94578 Property Records

Alameda County property record for 15904 Windsor Dr, Castro Valley, CA 94578

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,244 sqft · built 1948
Lot Size	0.153 acres (6,691 sqft)
Owner	Individual Name on File
Last Sale	$314,000 (Sep 2009)
Tax Bill	$5,622 (2025)
Deeds & Mortgages	Mar 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`80A-162-1`

Property Details

APN / Parcel Number

Primary APN	`80A-162-1`
Alternative APN	`080A-0162-001-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,244 sqft Living Area

Exterior

Year Built	Built 1948
Architectural Style	Other
Construction Type	Wood
Lot Area	6,691 sqft (0.153 acres)
Garage Type	Mixed

Location & Zoning

Street Address	15904 WINDSOR DR
City	CASTRO VALLEY
State	CA
Zip	94578-1416
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	MAP 13 PG 75 BLK E LOT 17
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1005
Census Tract	430500

Owner

Source: Alameda County records · APN 80A-162-1

Assessment roll updated July 1, 2025 · Last verified October 2025

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Co-owner	Verified Secondary Owner
Mailing Address	15904 WINDSOR DR, CASTRO VALLEY, CA 94578-1416
Occupancy	Owner Occupied
Owner Type	Individual, Secondary Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Sep 10, 2009 · Amount on Record
Deed Sale	Sep 10, 2009 · Amount on Record
Prior Sale	Nov 21, 2024
Deed Document Number	0000292974
Last Transfer Date	Mar 17, 2025
Transfer Doc	0000037137
Record Updated	Jun 08, 2026

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15904 WINDSOR DR, SAN LEANDRO, CA 94578-1416
Transaction Type	Mortgage
Record Updated	Apr 21, 2021
Title Company	FIRST AMERICAN TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	15904 WINDSOR DR, SAN LEANDRO, CA 94578-1416

Mortgage

Document Number	0000126805
Date	Mar 30, 2021
Instrument	2021126805

Lender

Name	PROVIDENT CU
Type	Credit Union
Address	REDWOOD CITY, CA 94065

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Apr 01, 2036

Tax Assessment & Valuation

Source: Alameda County records · Assessment roll updated July 1, 2025 · Last verified October 2025

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Unified School District	San Lorenzo Unified School District (KG - 12)

Tax Bill & Assessment History

Assessed value is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2025	$5,622.00 (+3.94%) Homeowner's exemption	$405,288 (+4.04%) Land $121,586 Building $283,702
2023	$5,409.00 Homeowner's exemption	$389,554 Land $116,866 Building $272,688

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of May 25, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Claims	2 (1978)
Most Recent Claim	Jan 1978 · tidal / storm surge

Wildfire

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	None beyond ember reach

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Etheric Communications, LLC., T-Mobile USA, Unwired, Verizon.

Based on FCC filings for 522 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	EAST BAY MUD serves 1,468,000 people
Water Source	Surface water
Last State Inspection	Dec 2021
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.