Contra Costa County property record for 4100 Cowell Rd, Concord, CA 94518
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,726 sqft · built 1954 |
| Lot Size | 0.25 acres (10,890 sqft) |
| Owner | 2 Company Names on Record |
| Tax Bill | $2,499 (2025) |
| Deeds & Mortgages | May 2018 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 130-180-004-9 |
| Primary APN | 130-180-004-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,726 sqft Living Area |
| 1st Floor Area | 1,726 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Lot Area | 10,890 sqft (0.25 acres) |
| Garage Type | Attached |
| Garage Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4100 COWELL RD |
|---|---|
| City | CONCORD |
| State | CA |
| Zip | 94518-1804 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | POR RO MONTE DEL DIABLO |
| Legal Subdivision | MONTE DEL DIABLO RHO |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 337100 |
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 Company Names on Record |
|---|---|
| Mailing Address | 4100 COWELL RD, CONCORD, CA 94518-1804 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Mar 29, 2018 |
| Transfer Doc | 0000067789 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 1, 2018 |
| Property Address | 4100 COWELL RD, CONCORD, CA 94518-1804 |
| Document Number | 0000067789 |
| Instrument Date | Mar 29, 2018 |
| Instrument | 67789 |
| Transaction Type | Transfer |
| Record Updated | May 8, 2018 |
| Title Company | ATTORNEY ONLY |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 4100 COWELL RD CONCORD CA 945181804, CONCORD, CA 94518-1804 |
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 | $137,479 (+2%) Land $29,193 Building $108,286 | |
| 2025 | $2,499.00 (+6.34%) | $134,784 (+4.04%) Land $28,621 Building $106,163 |
| 2023 | $2,350.00 (+2.4%) | $129,552 Land $27,510 Building $102,042 |
| 2022 | $2,295.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 7 (15% premium discount) |
| Nearby Flood Policies | 4 in force |
| Nearby Flood Claims | 4 (1997–2002) |
| Claims Outside the SFHA | 3 of 4 |
| Most Recent Claim | Dec 2002 · rainfall accumulation |
| Claims by Event |
|
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 | 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 552 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 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Sonic Telecom.
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