Contra Costa County property record for 4323 Clayton Rd, Concord, CA 94521
| Property Type | Service Station (Full Service) |
|---|---|
| Details | 1,092 sqft · built 1962 |
| Lot Size | 0.39 acres (16,988 sqft) |
| Owner | Company Name on File |
| Tax Bill | $7,601 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 115-242-038-4 |
| Primary APN | 115-242-038-4 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 1,092 sqft Gross Area |
| 1st Floor Area | 1,092 sqft |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1962 |
| Exterior Material | Metal |
| Construction Type | Metal Frame |
| Roof Type | Flat |
| Roof Material | Metal |
| Lot Area | 16,988 sqft (0.39 acres) |
| View / Lot | Corner |
| Heating System | HVAC |
|---|
| Street Address | 4323 CLAYTON RD |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94521-2843 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Service Station (Full Service) |
| Legal Description | POR RO MONTE DEL DIABLO |
| Legal Subdivision | RANCHO MONTE DEL DI |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 333200 |
4323 Clayton Rd, a commercial property, is owned by a company that acquired it in December 2008.
Source: Contra Costa County records, as of July 14, 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 File |
|---|---|
| Mailing Address | PO BOX 5728, CONCORD, CA 94524-0728 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Dec 10, 2008 |
| Transfer Doc | 0000274962 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 4323 Clayton Rd was $7,601.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Concord City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $581,511 (+2%) Land $398,566 Building $182,945 | |
| 2025 | $7,601.00 | $570,109 Land $390,751 Building $179,358 |
| 2023 | $7,277.00 (+1.34%) | $547,974 Land $375,579 Building $172,395 |
| 2022 | $7,181.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4323 Clayton Rd 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.
The area around 4323 Clayton Rd has no burnable land within ember reach, so its wildfire risk is not rated.
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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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.
Source: FCC Broadband Data Collection, based on 502 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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