18902 Lamson Rd, Castro Valley, CA 94546 Property Records

Alameda County property record for 18902 Lamson Rd, Castro Valley, CA 94546

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 2,206 sqft · built 1948
Lot Size	0.336 acres (14,630 sqft)
Owner	2 Individual Names on File
Tax Bill	$2,786 (2025)
Flood Zone	Zone X (minimal risk)
APN	`84D-1175-17`

Property Details

APN / Parcel Number

Primary APN	`84D-1175-17`
Alternative APN	`084D-1175-017-00`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,206 sqft Living Area

Exterior

Year Built	Built 1948
Effective Year Built	Effective 1948
Architectural Style	L-Shape
Construction Type	Wood
Lot Area	14,630 sqft (0.336 acres)

Location & Zoning

Street Address	18902 LAMSON RD
City	CASTRO VALLEY
State	CA
Zip	94546-2136
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	LOT: 00016 BLK: MP: 0025 PAGE: 0072 ;LOT: 00017 BLK: AR: 084D PAGE: 1175
Jurisdiction	ALAMEDA CA
Township / Civil Division	HAYWARD
Census Block Group	1
Census Block	1009
Census Tract	430300

Owner

Source: Alameda County assessment roll, APN 84D-1175-17, as of August 5, 2026 · Last verified August 2026

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

Owner of Record	2 Individual Names on File
Mailing Address	18902 LAMSON RD, CASTRO VALLEY, CA 94546-2136
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

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

Property Jurisdictions

Type	Name
State	California
County	Alameda County
Unified School District	Castro Valley Unified School District (KG - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value	Assessed Market Value
2026		$165,744 (+2%) Land $93,231 Building $72,513
2025	$2,786.00 (+5.17%)	$162,494 (+4.04%) Land $91,403 Building $71,091
2023	$2,649.00	$156,185 Land $87,854 Building $68,331	$740,880

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Alameda County (06001C), as of May 25, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060014303001, as of September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition, as of 2020 · Last verified October 2026

Flood

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	1 in force

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, 606 locations within half a mile, as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Sonic Telecom Fiber	10,000 / 10,000
Xfinity Cable	2,000 / 250
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL · Fiber, Fixed Wireless in parts of the area	100 / 20

May also be available: California Internet, Etheric Communications, LLC., Unwired, Verizon.

Drinking Water

Source: EPA Safe Drinking Water Information System, water system CA0110005, 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.