Contra Costa County property record for 5231 Concord Blvd, Concord, CA 94521
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,137 sqft · built 1952 |
| Lot Size | 0.546 acres (23,760 sqft) |
| Owner | Trust Name on File |
| Last Sale | $242,000 (Sep 2009) |
| Tax Bill | $3,487 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 117-212-015-4 |
| Primary APN | 117-212-015-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Stories | 1 Story |
| Building Area | 1,137 sqft Living Area |
| 1st Floor Area | 1,137 sqft |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1962 |
| Lot Area | 23,760 sqft (0.546 acres) |
| Garage Type | Attached |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 5231 CONCORD BLVD |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94521-2328 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | AYERS RANCH #1 POR LOT 39 |
| Legal Subdivision | AYERS RANCH SUB/RN |
| Legal Lot Number | 39 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1009 |
| Census Tract | 333102 |
5231 Concord Blvd is owner-occupied and held in a trust since September 2009.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 5231 CONCORD BLVD, CONCORD, CA 94521-2328 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 10, 2009 · Amount on File |
| Deed Sale | Sep 10, 2009 · Amount on File |
| Prior Sale | Jun 30, 2009 · Amount on File |
| Deed Document Number | 2009216269 |
| Prior Transfer Date | Aug 30, 1994 |
| Prior Transfer Doc | 0000221394 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 5231 Concord Blvd was $3,487 with a homeowner's exemption.
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 | $318,607 (+2%) Land $263,318 Building $55,289 | |
| 2025 | $3,487.00 Homeowner's exemption | $312,360 Land $258,155 Building $54,205 |
| 2023 | $3,360.00 (+0.87%) Homeowner's exemption | $300,233 Land $248,132 Building $52,101 |
| 2022 | $3,331.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 5231 Concord Blvd in Zone X, an area of minimal flood risk.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 2 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.
Wildfire risk around 5231 Concord Blvd is moderate, ranking above 45% of the US, with a 0.07% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 45% of the US · lower than 73% of California |
|---|---|
| Wildfire Likelihood | 0.07% 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 435 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fixed Wireless in parts of the area | 100 / 20 |
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