Alameda County property record for 18652 Alcorn Pl, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,748 sqft · built 2009 |
| Lot Size | 0.139 acres (6,038 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $96,000 (Dec 2009) |
| Tax Bill | $12,057 (2025) |
| Deeds & Mortgages | Sep 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1070-16 |
| Primary APN | 84C-1070-16 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,748 sqft Living Area |
| Year Built | Built 2009 |
|---|---|
| Effective Year Built | Effective 2009 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,038 sqft (0.139 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 18652 ALCORN PL |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3109 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00014 BLK: TR: 7305 |
| Legal Subdivision | 7305 EDEN TOWNSHIP |
| Legal Tract | 7305 |
| Legal Lot Number | 14 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 430200 |
18652 Alcorn Pl is owned and occupied by two individuals who bought it in December 2009.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18652 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| 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 2, 2009 · Amount on File |
| Deed Sale | Dec 2, 2009 · Amount on File |
| Prior Sale | Jul 7, 2009 · Amount on File |
| Deed Document Number | 2009374258 |
| Prior Transfer Date | Nov 24, 2009 |
| Prior Transfer Doc | 0000374258 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 18652 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 18652 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Document Number | 0000252710 |
|---|---|
| Date | Sep 29, 2020 |
| Instrument | 2020252710 |
| Name | R M K FINANCIAL CORP |
|---|---|
| Type | Mortgage Company |
| Address | ONTARIO, CA 91761 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 181 Months |
| Due | Oct 1, 2035 |
The 2025 property tax bill for 18652 Alcorn Pl was $12,057 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 | $967,238 (+1.27%) Land $292,271 Building $681,967 | ||
| 2025 | $12,057.00 Homeowner's exemption | $955,140 Land $286,542 Building $668,598 | |
| 2023 | $11,610.00 Homeowner's exemption | $918,058 Land $275,417 Building $642,641 | $1,424,520 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18652 Alcorn Pl 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 18652 Alcorn Pl is low, with a 0.01% annual chance of 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.
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 724 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, 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, GeoLinks, T-Mobile.
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