Contra Costa County property record for 4638 Adams Dr, Concord, CA 94521
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,818 sqft · built 1964 |
| Lot Size | 0.202 acres (8,800 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $505,000 (May 2004) |
| Tax Bill | $8,857 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 115-371-009-8 |
| Primary APN | 115-371-009-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,818 sqft Living Area |
| 1st Floor Area | 919 sqft |
| 2nd Floor Area | 899 sqft |
| Year Built | Built 1964 |
|---|---|
| Effective Year Built | Effective 1964 |
| Lot Area | 8,800 sqft (0.202 acres) |
| Garage Type | Attached |
| Garage Area | 446 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 4638 ADAMS DR |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94521-1336 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R8 |
| Legal Description | TRACT 3156 LOT 117 EX MR |
| Legal Subdivision | BISHOP ESTATES UNIT #2 |
| Legal Tract | 3156 |
| Legal Lot Number | 117 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 333200 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 4638 ADAMS DR, CONCORD, CA 94521-1336 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 7, 2004 · Amount on Record |
| Deed Sale | May 7, 2004 · Amount on Record |
| Deed Document Number | 2004170267 |
| Last Transfer Date | May 15, 2006 |
| Transfer Doc | 0000162175 |
| 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 | $732,348 (+2%) Land $401,340 Building $331,008 | |
| 2025 | $8,857.00 (+4.53%) Homeowner's exemption | $717,989 (+4.04%) Land $393,471 Building $324,518 |
| 2023 | $8,473.00 (+1.32%) Homeowner's exemption | $690,110 Land $378,193 Building $311,917 |
| 2022 | $8,363.00 |
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 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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 306 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 |
| AT&T DSL | 100 / 20 |
May also be available: T-Mobile.
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