18909 Patton Dr, Castro Valley, CA 94546 Property Records

Alameda County property record for 18909 Patton Dr, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,174 sqft · built 1949
Lot Size	0.1 acres (4,374 sqft)
Owner	Company Name on Record
Last Sale	$560,000 (Nov 2015)
Tax Bill	$8,609 (2025)
Deeds & Mortgages	Nov 2022 Transfer Mar 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`84D-1341-40`

Property Details

APN / Parcel Number

Primary APN	`84D-1341-40`
Alternative APN	`084D-1341-040-00`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	6 Rooms
Stories	1 Story
Building Area	1,174 sqft Living Area

Exterior

Year Built	Built 1949
Effective Year Built	Effective 1949
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	4,374 sqft (0.1 acres)

Location & Zoning

Street Address	18909 PATTON DR
City	CASTRO VALLEY
State	CA
Zip	94546-3134
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00040 BLK: AR: 084D PAGE: 1341
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	2
Census Block	2001
Census Tract	430700

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	18909 PATTON DR, CASTRO VALLEY, CA 94546-3134
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust

Deeds, Mortgages & Sale History

Date	Document
Nov 15, 2022	Intrafamily Transfer, Transfer
Mar 23, 2021	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 24, 2015 · Amount on Record
Deed Sale	Nov 24, 2015 · Amount on Record
Prior Sale	Sep 28, 2001 · Amount on Record
Deed Document Number	2015312682
Last Transfer Date	Nov 4, 2022
Transfer Doc	0000185918
Record Updated	Oct 29, 2026

November 2022: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	ALAMEDA CA
Recording Date	Nov 15, 2022
Property Address	18909 PATTON DR, CASTRO VALLEY, CA 94546-3134
Document Number	0000185918
Instrument Date	Nov 4, 2022
Instrument	2022185918
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
Address	18909 PATTON DR, CASTRO VALLEY, CA 94546-3134

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	ALAMEDA CA
Property Address	18909 PATTON DR, CASTRO VALLEY, CA 94546-3134
Transaction Type	Mortgage
Record Updated	Apr 14, 2021
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	18909 PATTON DR, CASTRO VALLEY, CA 94546-3134

Mortgage

Document Number	0000116861
Date	Mar 23, 2021
Instrument	2021116861

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	358 Months
Due	Jan 1, 2051

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	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$669,165 (+0.94%) Land $202,849 Building $473,316
2025	$8,609.00 (+2.99%) Homeowner's exemption	$662,910 (+4.04%) Land $198,873 Building $464,037
2023	$8,359.00	$637,173 Land $191,152 Building $446,021	$780,930

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
Community Rating System	Class 7 (15% premium discount)
Nearby Flood Policies	5 in force
Nearby Flood Claims	1 (1998)
Most Recent Claim	Feb 1998 · Severe Winter Storms And Flooding

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 938 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
AT&T Fiber · Fixed Wireless in parts of the area	5,000 / 5,000
Xfinity Cable	2,000 / 250
Etheric Networks Fixed Wireless	250 / 100

May also be available: GeoLinks, T-Mobile, Unwired, Verizon.

Nearby Properties on Patton Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures