Alameda County property record for 18091 Lamson Rd, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,137 sqft · built 1960 |
| Lot Size | 0.183 acres (7,990 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $2,451 (2025) |
| Deeds & Mortgages | Jul 2022 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 84D-1241-1 |
| Primary APN | 84D-1241-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 2,137 sqft Living Area |
| Year Built | Built 1960 |
|---|---|
| Effective Year Built | Effective 1961 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 7,990 sqft (0.183 acres) |
| Street Address | 18091 LAMSON RD |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-1347 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00001 BLK: TR: 1653 |
| Legal Subdivision | TRACT 1653 |
| Legal Tract | 1653 |
| Legal Lot Number | 1 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 430300 |
18091 Lamson Rd is held in a trust since July 2022.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 22589 CANYON RIDGE PL, CASTRO VALLEY, CA 94552-5416 |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Jul 8, 2022 |
| Transfer Doc | 0000134033 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jul 27, 2022 |
| Property Address | 18091 LAMSON RD, CASTRO VALLEY, CA 94546-1347 |
| Document Number | 0000134033 |
| Map Reference | MB 36 PG 80 |
| Instrument Date | Jul 8, 2022 |
| Instrument | 2022134033 |
| Transaction Type | Transfer |
| Record Updated | Aug 22, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Address | 22589 CANYON RIDGE PL, CASTRO VALLEY, CA 94552-5416 |
The 2025 property tax bill for 18091 Lamson Rd was $2,451.
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | Castro Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $136,790 (+2%) Land $53,515 Building $83,275 | ||
| 2025 | $2,451.00 | $134,110 Land $52,467 Building $81,643 | |
| 2023 | $2,325.00 | $1,270,000 Land $400,000 Building $870,000 | $1,139,040 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18091 Lamson Rd in Zone X, an area of minimal flood risk.
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 | 1 in force |
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 risk around 18091 Lamson Rd is moderate, ranking above 46% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 46% of the US · lower than 72% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
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 |
| 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.
Source: FCC Broadband Data Collection, based on 666 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 · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, T-Mobile, Unwired.
5G (outdoors only) and 4G LTE
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