15963 Windsor Dr, Castro Valley (San Leandro), CA 94578 Property Records

Alameda County property record for 15963 Windsor Dr, Castro Valley, CA 94578

Property Summary

Property Type	Single Family Home
Details	2 bd · 1 ba · 1,119 sqft · built 1947
Lot Size	0.153 acres (6,643 sqft)
Owner	Company Name on Record
Last Sale	$485,000 (Dec 2006)
Tax Bill	$8,542 (2025)
Deeds & Mortgages	Sep 2023 Transfer Jan 2022 Mortgage + 3 more
Flood Zone	Zone X (minimal risk)
APN	`80A-163-12`

Property Details

APN / Parcel Number

Primary APN	`80A-163-12`
Alternative APN	`080A-0163-012-00`

Interior

Bedrooms	2 Beds
Full Baths	1 Bath
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,119 sqft Living Area

Exterior

Year Built	Built 1947
Effective Year Built	Effective 1947
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	6,643 sqft (0.153 acres)

Location & Zoning

Street Address	15963 WINDSOR DR
City	CASTRO VALLEY
State	CA
Zip	94578-1415
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00010 BLK: 000F TR: 0813
Legal Subdivision	TRACT 813
Legal Tract	0813
Legal Block	F
Legal Lot Number	10
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1004
Census Tract	430500

Owner

Source: Alameda County records, as of August 5, 2026

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

Owner of Record	Company Name on Record
Mailing Address	15963 WINDSOR DR, CASTRO VALLEY, CA 94578-1415
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Sep 15, 2023	Intrafamily Transfer, Transfer
Jan 19, 2022	Deed of Trust, Mortgage · Conventional Mortgage ROCKET MORTGAGE LLC
Oct 11, 2018	Deed of Trust, Mortgage · Line of Credit PATELCO CU
May 26, 2020	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LNS
Jan 13, 2017	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BK

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Dec 11, 2006 · Amount on Record
Deed Sale	Dec 11, 2006 · Amount on Record
Prior Sale	Mar 26, 2003 · Amount on Record
Deed Document Number	2006451098
Prior Transfer Date	Dec 20, 1994
Prior Transfer Doc	0000005929
Record Updated	Oct 29, 2026

September 2023: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Sep 15, 2023
Property Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415
Document Number	0000106009
Map Reference	MB 13 PG 75-77
Instrument Date	Aug 11, 2023
Instrument	2023106009
Transaction Type	Transfer
Record Updated	Oct 9, 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	Family Trust
Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415

January 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415
Transaction Type	Mortgage
Record Updated	Feb 9, 2022
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415

Mortgage

Document Number	0000012343
Date	Jan 19, 2022
Instrument	2022012343

Lender

Name	ROCKET MORTGAGE LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Feb 1, 2052

October 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415
Transaction Type	Mortgage
Record Updated	Feb 7, 2021
Title Company	PLACER TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000198397
Date	Oct 11, 2018
Instrument	2018198397

Lender

Name	PATELCO CU
Type	Credit Union
Address	PLEASANTON, CA 94588

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	302 Months
Due	Nov 30, 2043

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

May 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415
Document Number	0000125967
Instrument Date	May 26, 2020
Transaction Type	Mortgage
Record Updated	Jul 24, 2020
Title Company	CHICAGO TITLE COMPANY, CHICAGO TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	15963 WINDSOR DR SAN LEANDRO CA 945781415, SAN LEANDRO, CA 94578-1415

Mortgage

Document Number	0000125967
Date	Jun 2, 2020
Instrument	125967

Lender

Name	QUICKEN LNS
Type	Funding / Finance Company
Address	DETROIT, MI 48226-1906

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	360 Months
Due	Jun 1, 2050

January 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	15963 WINDSOR DR, SAN LEANDRO, CA 94578-1415
Document Number	0000035195
Instrument Date	Jan 13, 2017
Transaction Type	Mortgage
Record Updated	Aug 16, 2018
Title Company	AMERICAN TITLE COMPANY, AMERICAN TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	15963 WINDSOR DR SAN LEANDRO CA 945781415, SAN LEANDRO, CA 94578-1415

Mortgage

Document Number	0000035195
Date	Feb 3, 2017
Instrument	35195

Lender

Name	WELLS FARGO BK
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Feb 2, 2047

Interest

Rate Type	Adjustable Rate

Tax Assessment & Valuation

Source: Alameda County assessment roll, as of August 5, 2026

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	Assessed Market Value
2026		$655,737 (+0.92%) Land $198,821 Building $463,916
2025	$8,542.00 (+3.82%) Homeowner's exemption	$649,744 (+4.04%) Land $194,923 Building $454,821
2023	$8,228.00 Homeowner's exemption	$624,518 Land $187,355 Building $437,163	$686,070

Assessed value and assessed market value are set for property tax purposes and are not market price estimates.

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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