Alameda County property record for 18785 Crest Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 2,050 sqft · built 1950 |
| Lot Size | 0.244 acres (10,614 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $577,000 (Dec 2003) |
| Tax Bill | $10,369 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-360-27 |
| Primary APN | 84B-360-27 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 2,050 sqft Living Area |
| Year Built | Built 1950 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 10,614 sqft (0.244 acres) |
| Street Address | 18785 CREST AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2731 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00027 BLK: AR: 084B PAGE: 0360 |
| Legal Subdivision | VALLEY CREST GARDEN |
| Legal Lot Number | 35 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 430500 |
18785 Crest Ave is owned and occupied by two individuals who acquired it in September 2005.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18785 CREST AVE, CASTRO VALLEY, CA 94546-2731 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Dec 30, 2003 · Amount on File |
| Deed Sale | Dec 30, 2003 · Amount on File |
| Deed Document Number | 2003744519 |
| Last Transfer Date | Sep 28, 2005 |
| Transfer Doc | 0000433010 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 18785 Crest Ave was $10,369 with a homeowner's exemption.
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 | $829,730 (+1.15%) Land $251,019 Building $585,711 | ||
| 2025 | $10,369.00 Homeowner's exemption | $820,326 Land $246,098 Building $574,228 | |
| 2023 | $10,004.00 Homeowner's exemption | $788,475 Land $236,542 Building $551,933 | $1,128,600 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18785 Crest Ave in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1978.
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 risk around 18785 Crest Ave is low, with a 0.02% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.02% annual chance |
| Exposure | None beyond ember reach |
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 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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