Alameda County property record for 17063 Roberto St, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 2.5 ba · 2,061 sqft · built 1947 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Company Name on Record |
| Last Sale | $220,000 (Nov 1998) |
| Tax Bill | $4,980 (2025) |
| Deeds & Mortgages | Dec 2022 Transfer Dec 2022 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 80A-235-6 |
| Primary APN | 80A-235-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,061 sqft Living Area |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Architectural Style | L-Shape |
| Exterior Material | Wood |
| Construction Type | Wood |
| Roof Material | Composition Shingle |
| Lot Area | 5,000 sqft (0.115 acres) |
| Lot Dimensions | 100 ft deep x 50 ft wide |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 17063 ROBERTO ST |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-3848 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | LOT: 00006 BLK: AR: 080A PAGE: 0235 |
| Legal Subdivision | EL PORTAL |
| Legal Lot Number | 450 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 3 |
| Census Block | 3021 |
| Census Tract | 430500 |
Source: Alameda County records, as of August 5, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 17063 ROBERTO ST, CASTRO VALLEY, CA 94546-3848 |
| Owner Type | Company |
| Vesting | Trust |
| Date | Document |
|---|---|
| Dec 22, 2022 | Affidavit of Death of Joint Tenant, Transfer |
| Dec 22, 2022 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 20, 1998 · Amount on Record |
| Deed Sale | Nov 20, 1998 · Amount on Record |
| Deed Document Number | 1998407064 |
| Last Transfer Date | Dec 15, 2022 |
| Transfer Doc | 0000201166 |
| Record Updated | Sep 20, 2026 |
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 22, 2022 |
| Property Address | 17063 ROBERTO ST, CASTRO VALLEY, CA 94546-3848 |
| Document Number | 0000201166 |
| Map Reference | MB 8 PG 76 |
| Instrument Date | Dec 22, 2022 |
| Instrument | 2022201166 |
| Transaction Type | Transfer |
| Record Updated | Jan 19, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 17063 ROBERTO ST, CASTRO VALLEY, CA 94546-3848 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Dec 22, 2022 |
| Property Address | 17063 ROBERTO ST, CASTRO VALLEY, CA 94546-3848 |
| Document Number | 0000201167 |
| Map Reference | MB 8 PG 76 |
| Instrument Date | Dec 22, 2022 |
| Instrument | 2022201167 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Living Trust |
| Address | 17063 ROBERTO ST, CASTRO VALLEY, CA 94546-3848 |
Source: Alameda County assessment roll, as of August 5, 2026
| Type | Name |
|---|---|
| State | California |
| County | Alameda County |
| Unified School District | San Lorenzo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value | Assessed Market Value |
|---|---|---|---|
| 2026 | $351,453 (+2%) Land $105,532 Building $245,921 | ||
| 2025 | $4,980.00 (+3.9%) | $344,561 (+4.04%) Land $103,462 Building $241,099 | |
| 2023 | $4,793.00 | $331,185 Land $99,446 Building $231,739 | $804,690 |
Assessed value and assessed market value are set for property tax purposes and are not market price estimates.
Source: FEMA National Flood Hazard Layer, effective May 25, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 796 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 |
May also be available: Etheric Networks, GeoLinks, T-Mobile, Unwired, Verizon.
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