Alameda County property record for 18601 Alcorn Pl, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,748 sqft · built 2008 |
| Lot Size | 0.149 acres (6,470 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $700,000 (Sep 2010) |
| Tax Bill | $11,367 (2025) |
| Deeds & Mortgages | May 2023 Transfer Jan 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 84C-1070-7 |
| Primary APN | 84C-1070-7 |
|---|---|
| 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 2008 |
|---|---|
| Effective Year Built | Effective 2008 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 6,470 sqft (0.149 acres) |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 18601 ALCORN PL |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3109 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00005 BLK: TR: 7305 |
| Legal Subdivision | TR 7305 |
| Legal Tract | 7305 |
| Legal Lot Number | 5 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 4 |
| Census Block | 4005 |
| Census Tract | 430200 |
18601 Alcorn Pl is owned and occupied by two individuals who acquired it in May 2023.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 18601 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| May 18, 2023 | Transfer on Death Deed, Transfer |
| Jan 3, 2018 | Deed of Trust, Mortgage · Line of Credit JPMORGAN CHASE BANK NA |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 24, 2010 · Amount on File |
| Deed Sale | Sep 24, 2010 · Amount on File |
| Deed Document Number | 2010278860 |
| Last Transfer Date | May 18, 2023 |
| Transfer Doc | 0000056546 |
| Record Updated | Oct 29, 2026 |
| Document Type | Transfer on Death Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | May 18, 2023 |
| Property Address | 18601 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Document Number | 0000056546 |
| Map Reference | MB 301 PG 96-98 |
| Instrument Date | May 18, 2023 |
| Instrument | 2023056546 |
| Transaction Type | Transfer |
| Record Updated | Jun 12, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 18601 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Property Address | 18601 ALCORN PL, CASTRO VALLEY, CA 94546-3109 |
| Transaction Type | Mortgage |
| Record Updated | Feb 5, 2021 |
| Name | Verified Name |
|---|
| Document Number | 0000001860 |
|---|---|
| Date | Jan 3, 2018 |
| Instrument | 2018001860 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jan 1, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 18601 Alcorn Pl was $11,367 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 | $907,572 (+1.22%) Land $274,280 Building $640,292 | ||
| 2025 | $11,367.00 Homeowner's exemption | $896,641 Land $268,902 Building $627,739 | |
| 2023 | $10,943.00 Homeowner's exemption | $861,835 Land $258,464 Building $603,371 | $1,397,430 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 18601 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 18601 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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