15984 Windsor Dr, Castro Valley (San Leandro), CA 94578 Property Records

Alameda County property record for 15984 Windsor Dr, Castro Valley, CA 94578

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,683 sqft · built 1947
Lot Size	0.126 acres (5,500 sqft)
Owner	2 Company Names on Record
Last Sale	$635,000 (Apr 2017)
Tax Bill	$9,668 (2025)
Deeds & Mortgages	Aug 2021 Transfer Apr 2021 Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`80A-162-34`

Property Details

APN / Parcel Number

Primary APN	`80A-162-34`
Alternative APN	`080A-0162-034-00`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,683 sqft Living Area

Exterior

Year Built	Built 1947
Architectural Style	Other
Construction Type	Wood
Lot Area	5,500 sqft (0.126 acres)
Parking Spaces	1 Parking Space

Location & Zoning

Street Address	15984 WINDSOR DR
City	CASTRO VALLEY
State	CA
Zip	94578-1416
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	813
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1005
Census Tract	430500

Owner

Source: Alameda County records, as of October 20, 2025

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

Owner of Record	2 Company Names on Record
Co-owner	Co-owner on Record
Mailing Address	18725 PHILBROOK ST, ROWLAND HEIGHTS, CA 91748-4847
Owner Type	Company, Secondary Individual
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Aug 26, 2021	Intrafamily Transfer, Transfer
Apr 26, 2021	Deed of Trust, Mortgage · Conventional Mortgage UNITED WHOLESALE MORTGAGE
Apr 14, 2017	Grant Deed, Transfer · Conventional Mortgage STEARNS LNDG

Assessor's Deed Record

Deed Names	3 Names on Deed
Last Sale	Apr 14, 2017 · Amount on Record
Deed Sale	Apr 14, 2017 · Amount on Record
Prior Sale	Apr 14, 2017 · Amount on Record
Deed Document Number	0000084520
Last Transfer Date	Aug 26, 2021
Transfer Doc	0000291145
Record Updated	Jun 8, 2026

August 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Aug 26, 2021
Property Address	15984 WINDSOR DR, SAN LEANDRO, CA 94578-1416
Document Number	0000291145
Map Reference	MB 13 PG 75-77
Instrument Date	Jul 30, 2021
Instrument	2021291145
Transaction Type	Transfer
Record Updated	Jun 7, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Living Trust
Address	18725 PHILBROOK ST, ROWLAND HEIGHTS, CA 91748-4847
Investor	Possibly a Property Investor

April 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15984 WINDSOR DR, SAN LEANDRO, CA 94578-1416
Transaction Type	Mortgage
Record Updated	May 19, 2021
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATL TTL ORANGE CNT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18725 PHILBROOK ST, ROWLAND HEIGHTS, CA 91748-4847

Mortgage

Document Number	0000162167
Date	Apr 26, 2021
Instrument	2021162167

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2051

April 2017: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	ALAMEDA CA
Recording Date	Apr 14, 2017
Property Address	15984 WINDSOR DR, SAN LEANDRO, CA 94578-1416
Document Number	0000084520
Instrument Date	Apr 7, 2017
Instrument	84520
Transaction Type	Transfer
Record Updated	Apr 28, 2017
Title Company	OLD REPUBLIC TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$698.00
Amount Accuracy	Full Value
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	15984 WINDSOR DR SAN LEANDRO CA 945781416, SAN LEANDRO, CA 94578-1416

Mortgage

Document Number	84521
Date	Apr 14, 2017
Instrument	84521

Lender

Name	STEARNS LNDG
Address	SANTA ANA, CA 92707-8788

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Apr 13, 2047

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of July 1, 2025

Property Jurisdictions

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

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2025	$9,668.00 (+3.76%)	$736,954 (+4.04%) Land $221,086 Building $515,868
2023	$9,318.00	$708,341 Land $212,502 Building $495,839

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

Flood

Source: FEMA National Flood Hazard Layer, effective May 25, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026

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

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.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

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 cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
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, 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.

Internet Providers

Source: FCC Broadband Data Collection, based on 522 locations within half a mile, as of December 31, 2025

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 Networks, T-Mobile, Unwired, Verizon.

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