Alameda County property record for 19217 Masterson Pl, Castro Valley, CA 94552
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 2,228 sqft · built 1985 |
| Lot Size | 0.216 acres (9,415 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $5,388 (2025) |
| Deeds & Mortgages | Feb 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 85A-6404-66-1 |
| Primary APN | 85A-6404-66-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 2,228 sqft Living Area |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 9,415 sqft (0.216 acres) |
| Street Address | 19217 MASTERSON PL |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94552-5085 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00092 BLK: TR: 4468 ;LOT: 00234 BLK: TR: 4468 |
| Legal Subdivision | TRACT 4468 |
| Legal Tract | 4468 |
| Legal Lot Number | 234 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3003 |
| Census Tract | 430101 |
19217 Masterson Pl is owner-occupied and held in a trust since June 2020.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 19217 MASTERSON PL, CASTRO VALLEY, CA 94552-5085 |
| Occupancy | Owner Occupied |
| 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 | Jun 11, 2020 |
| Transfer Doc | 0000056077 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 8, 2021 |
| Property Address | 19217 MASTERSON PL, CASTRO VALLEY, CA 94552-5085 |
| Document Number | 0000056077 |
| Map Reference | MB 117 PG 1 |
| Instrument Date | Jun 11, 2020 |
| Instrument | 2021056077 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Revocable Living Trust |
| Address | 19217 MASTERSON PL, CASTRO VALLEY, CA 94552-5085 |
The 2025 property tax bill for 19217 Masterson Pl was $5,388 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 | $390,787 (+0.21%) Land $118,093 Building $279,694 | ||
| 2025 | $5,388.00 Homeowner's exemption | $389,987 Land $115,777 Building $274,210 | |
| 2023 | $5,162.00 Homeowner's exemption | $374,846 Land $111,282 Building $263,564 | $1,428,030 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 19217 Masterson Pl in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 2017.
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 | 2 in force |
| Nearby Flood Claims | 2 (2017–2022) |
| Claims Outside the SFHA | 2 of 2 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 19217 Masterson Pl is high, ranking above 76% of the US, with a 0.5% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 76% of the US · above 52% of California |
|---|---|
| Wildfire Likelihood | 0.5% 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 411 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Etheric Networks.
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