Alameda County property record for 18656 Sheffield Rd, Castro Valley, CA 94546
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,880 sqft · built 1964 |
| Lot Size | 0.25 acres (10,900 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,485,000 (Feb 2024) |
| Tax Bill | $18,742 (2025) |
| Deeds & Mortgages | Feb 2024 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 84B-396-31 |
| Primary APN | 84B-396-31 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 2,880 sqft Living Area |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1967 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 10,900 sqft (0.25 acres) |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|
| Street Address | 18656 SHEFFIELD RD |
|---|---|
| City | CASTRO VALLEY |
| State | CA |
| Zip | 94546-2737 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LOT: 00009 BLK: 000A TR: 2033 |
| Legal Subdivision | TRACT 2033 FILED MARCH 10 1960 |
| Legal Tract | 2033 |
| Jurisdiction | ALAMEDA CA |
| Township / Civil Division | HAYWARD |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 430600 |
Source: Alameda County records, as of August 26, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 18656 SHEFFIELD RD, CASTRO VALLEY, CA 94546-2737 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 21, 2024 · Amount on Record |
| Deed Sale | Feb 21, 2024 · Amount on Record |
| Deed Document Number | 202426860 |
| Prior Transfer Date | Nov 8, 2007 |
| Prior Transfer Doc | 0000047050 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | ALAMEDA CA |
| Recording Date | Feb 21, 2024 |
| Property Address | 18656 SHEFFIELD RD, CASTRO VALLEY, CA 94546-2737 |
| Document Number | 0000026860 |
| Map Reference | MB 41 PG 83 |
| Instrument Date | Feb 13, 2024 |
| Instrument | 2024026860 |
| Transaction Type | Transfer |
| Record Updated | Mar 29, 2024 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $1,633.50 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 18656 SHEFFIELD RD, CASTRO VALLEY, CA 94546-2737 |
| Document Number | 0000026861 |
|---|---|
| Date | Feb 21, 2024 |
| Instrument | 2024026861 |
| Name | ONY GLO INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Mar 1, 2054 |
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 | $1,544,993 (+2%) Land $463,498 Building $1,081,495 | ||
| 2025 | $18,742.00 (+578.57%) | $1,514,700 (+776.88%) Land $454,410 Building $1,060,290 | |
| 2023 | $2,762.00 Homeowner's exemption | $172,737 Land $62,449 Building $110,288 | $1,462,590 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
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 | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.04% 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 622 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| Xfinity Cable | 2,000 / 250 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Unwired, Verizon.
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