Contra Costa County property record for 4801 Clayton Rd, Concord, CA 94521
| Property Type | Medical Building |
|---|---|
| Details | 2,066 sqft · built 1976 |
| Lot Size | 0.329 acres (14,331 sqft) |
| Owner | Company Name on Record |
| Last Sale | $213,062 (Jan 2011) |
| Tax Bill | $6,664 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 116-261-039-6 |
| Primary APN | 116-261-039-6 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 2,066 sqft Gross Area |
| 1st Floor Area | 2,066 sqft |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1977 |
| Lot Area | 14,331 sqft (0.329 acres) |
| Street Address | 4801 CLAYTON RD |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94521-2940 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Medical Building |
| Legal Description | MATHESON SUBN POR LOT 12 |
| Legal Subdivision | MATHESON SUB |
| Legal Lot Number | 12 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 333101 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 2444 WILSHIRE BLVD, 509, SANTA MONICA, CA 90403-5812 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 6, 2011 · Amount on Record |
| Deed Sale | Jan 6, 2011 · Amount on Record |
| Prior Sale | Aug 25, 2006 · Amount on Record |
| Deed Document Number | 20114095 |
| Record Updated | Oct 29, 2026 |
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 | $496,570 (+2%) Land $196,013 Building $300,557 | |
| 2025 | $6,664.00 (+4.57%) | $486,834 (+4.04%) Land $192,170 Building $294,664 |
| 2023 | $6,373.00 (+1.4%) | $467,931 Land $184,708 Building $283,223 |
| 2022 | $6,285.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% 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 | 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 472 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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