Alameda County property record for 19188 Garrison Ave, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,378 sqft · built 1949 |
| Lot Size | 0.115 acres (4,998 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $990,000 (Jul 2021) |
| Tax Bill | $13,266 (2025) |
| Deeds & Mortgages | Jul 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-568-20 |
| Primary APN | 84B-568-20 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,378 sqft Living Area |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1973 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 4,998 sqft (0.115 acres) |
| Parking Spaces | 1 Parking Space |
| Street Address | 19188 GARRISON AVE |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3121 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00006 BLK: 000B TR: 0928 |
| Legal Tract | 0928 |
| Legal Block | B |
| Legal Lot Number | 6 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 430700 |
19188 Garrison Ave is owned by two individuals who bought it in July 2021.
Source: Alameda County records, as of August 5, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 20459 JOHN DR, 4, CASTRO VALLEY, CA 94546-3951 |
| 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 | Jul 29, 2021 · Amount on File |
| Deed Sale | Jul 29, 2021 · Amount on File |
| Prior Sale | Mar 28, 2003 · Amount on File |
| Deed Document Number | 2021261233 |
| Prior Transfer Date | Oct 3, 2003 |
| Prior Transfer Doc | 0000613786 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Jul 29, 2021 |
| Property Address | 19188 GARRISON AVE, CASTRO VALLEY, CA 94546-3121 |
| Document Number | 0000261233 |
| Map Reference | MB 30 PG 21 |
| Instrument Date | Jul 21, 2021 |
| Instrument | 2021261233 |
| Transaction Type | Transfer |
| Record Updated | Aug 17, 2021 |
| Title Company | WFG NATIONAL TITLE INS CO |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,089.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 20459 JOHN DR APT 4, 4, CASTRO VALLEY, CA 94546-3951 |
| Document Number | 0000261234 |
|---|---|
| Date | Jul 29, 2021 |
| Instrument | 2021261234 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Aug 1, 2051 |
The 2025 property tax bill for 19188 Garrison Ave was $13,266.
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 | $1,071,595 (+2%) Land $321,478 Building $750,117 | ||
| 2025 | $13,266.00 | $1,050,587 Land $315,176 Building $735,411 | |
| 2023 | $12,782.00 | $1,009,800 Land $302,940 Building $706,860 | $1,003,230 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
FEMA maps place 19188 Garrison Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1998.
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 | 5 in force |
| Nearby Flood Claims | 1 (1998) |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
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 19188 Garrison Ave 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 938 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 in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: GeoLinks, T-Mobile, Unwired, Verizon.
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