Contra Costa County property record for 446 Grenache Cir, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,458 sqft · built 1980 |
| Lot Size | 0.316 acres (13,750 sqft) |
| Owner | 2 Individual Names on Record |
| Tax Bill | $7,300 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-591-004-5 |
| Primary APN | 119-591-004-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,458 sqft Living Area |
| Gross Area | 3,099 sqft |
| 1st Floor Area | 1,659 sqft |
| 2nd Floor Area | 799 sqft |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 13,750 sqft (0.316 acres) |
| Lot Dimensions | 125 ft deep x 110 ft wide |
| Garage Type | Attached |
| Garage Area | 641 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 446 GRENACHE CIR |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1432 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R12 |
| Legal Description | T05049 L0127 B |
| Legal Tract | 05049 |
| Legal Lot Number | 127 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 446 GRENACHE CIR, CLAYTON, CA 94517-1432 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 28, 2002 |
| Transfer Doc | 0000119496 |
| Record Updated | Sep 20, 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 | $557,000 (+2%) Land $204,225 Building $352,775 | |
| 2025 | $7,300.00 (+4.72%) Homeowner's exemption | $546,079 (+4.04%) Land $200,221 Building $345,858 |
| 2023 | $6,971.00 (+1.5%) Homeowner's exemption | $524,877 Land $192,448 Building $332,429 |
| 2022 | $6,868.00 |
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 X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 4 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 66% of the US · above 40% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect 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 253 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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