Contra Costa County property record for 4891 Thiessen Ct, Concord, CA 94521
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,743 sqft · built 1985 |
| Lot Size | 0.193 acres (8,400 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $5,362 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 116-222-017 |
| Primary APN | 116-222-017 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,743 sqft Living Area |
| Gross Area | 2,222 sqft |
| 1st Floor Area | 1,743 sqft |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1986 |
| Lot Area | 8,400 sqft (0.193 acres) |
| Lot Dimensions | 120 ft deep x 70 ft wide |
| Garage Type | Attached |
| Garage Area | 479 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4891 THIESSEN CT |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94521-2200 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R75 |
| Legal Description | T06132 L0002 B |
| Legal Tract | 06132 |
| Legal Lot Number | 2 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2008 |
| 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 | Individual Name on Record |
|---|---|
| Mailing Address | 4891 THIESSEN CT, CONCORD, CA 94521-2200 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Mar 5, 1999 |
| Transfer Doc | 0000076342 |
| 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 | Concord City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $415,533 (+2%) Land $167,978 Building $247,555 | |
| 2025 | $5,362.00 (+5.08%) Homeowner's exemption | $407,386 (+4.04%) Land $164,685 Building $242,701 |
| 2023 | $5,103.00 (+1.61%) Homeowner's exemption | $391,569 Land $158,291 Building $233,278 |
| 2022 | $5,022.00 |
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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 633 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: Verizon.
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