Contra Costa County property record for 518 Williams Dr, San Pablo, CA 94806
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 1 ba · 1,740 sqft · built 1951 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $430,000 (May 2018) |
| Tax Bill | $8,203 (2025) |
| Deeds & Mortgages | May 2018 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 408-053-019-1 |
| Primary APN | 408-053-019-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,740 sqft Living Area |
| 1st Floor Area | 1,740 sqft |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 518 WILLIAMS DR |
|---|---|
| City | SAN PABLO |
| State | CA |
| Zip | 94806-1781 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | PARCHESTER VILLAGE #2 LOT 361 |
| Legal Subdivision | PARCHESTER VILLAGE 02 |
| Legal Lot Number | 361 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1029 |
| Census Tract | 392201 |
518 Williams Dr is owned and occupied by two individuals who bought it in May 2018.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 518 WILLIAMS DR, SAN PABLO, CA 94806-1781 |
| Occupancy | Owner Occupied |
| 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 | May 8, 2018 · Amount on File |
| Deed Sale | May 8, 2018 · Amount on File |
| Prior Sale | Dec 22, 2015 · Amount on File |
| Deed Document Number | 201871750 |
| Prior Transfer Date | Jul 3, 1996 |
| Prior Transfer Doc | 0000130855 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 8, 2018 |
| Property Address | 518 WILLIAMS DR, RICHMOND, CA 94806-1781 |
| Document Number | 0000071750 |
| Map Reference | MB 39 PG 34 |
| Instrument Date | Mar 23, 2018 |
| Instrument | 2018-071750 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE COMP |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 518 WILLIAMS DR, RICHMOND, CA 94806-1781 |
| Document Number | 0000071751 |
|---|---|
| Date | May 8, 2018 |
| Instrument | 2018-071751 |
| Name | SIERRA PACIFIC MORTGAGE CO INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Jun 1, 2048 |
The 2025 property tax bill for 518 Williams Dr was $8,203.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Richmond City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $499,046 (+2%) Land $290,143 Building $208,903 | |
| 2025 | $8,203.00 | $489,261 Land $284,454 Building $204,807 |
| 2023 | $7,848.00 (+1.47%) | $470,264 Land $273,409 Building $196,855 |
| 2022 | $7,734.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 518 Williams Dr in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 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.
Wildfire risk around 518 Williams Dr is low, with less than 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 98% of the US · lower than 98.4% of California |
|---|---|
| Wildfire Likelihood | Under 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 117 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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