Contra Costa County property record for 6123 Main St, Clayton, CA 94517
| Property Type | Medical Building |
|---|---|
| Details | 1,640 sqft · built 1979 |
| Lot Size | 0.302 acres (13,155 sqft) |
| Owner | Company Name on Record |
| Last Sale | $725,000 (Jan 2014) |
| Tax Bill | $13,184 (2025) |
| Flood Zone | Zone AO (high risk) |
| APN | 118-560-006-9 |
| Primary APN | 118-560-006-9 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 1,640 sqft Gross Area |
| 1st Floor Area | 1,640 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1979 |
| Lot Area | 13,155 sqft (0.302 acres) |
| Street Address | 6123 MAIN ST |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1201 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Medical Building |
| Legal Description | 163PM1 PCL 3 |
| Legal Subdivision | TOWN CLAYTON |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2010 |
| Census Tract | 355308 |
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 | 6123 MAIN ST, CLAYTON, CA 94517-1201 |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 31, 2014 · Amount on Record |
| Deed Sale | Jan 31, 2014 · Amount on Record |
| Prior Sale | Jun 28, 1995 · Amount on Record |
| Deed Document Number | 201416253 |
| 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 | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $906,510 (+2%) Land $406,366 Building $500,144 | |
| 2025 | $13,184.00 (-9.75%) | $888,737 (+4.04%) Land $398,399 Building $490,338 |
| 2023 | $14,609.00 (+14.04%) | $854,229 Land $382,930 Building $471,299 |
| 2022 | $12,810.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone AO high risk · sheet flow 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| Nearby Flood Policies | 3 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 44% of the US · lower than 74% of California |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 342 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
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