Contra Costa County property record for 4901 Chism Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,800 sqft · built 1995 |
| Lot Size | 0.128 acres (5,560 sqft) |
| Owner | Company Name on File |
| Last Sale | $400,500 (Mar 2004) |
| Tax Bill | $1,571 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-085-007-5 |
| Primary APN | 056-085-007-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,800 sqft Living Area |
| 1st Floor Area | 1,800 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1996 |
| Lot Area | 5,560 sqft (0.128 acres) |
| Garage Type | Attached |
| Garage Area | 549 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 4901 CHISM WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8149 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7123 L231 |
| Legal Tract | 7123 |
| Legal Lot Number | 231 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1004 |
| Census Tract | 302009 |
Source: Contra Costa County records · APN 056-085-007-5
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 4901 CHISM WAY, ANTIOCH, CA 94531-8149 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 10, 2004 · Amount on Record |
| Deed Sale | Mar 10, 2004 · Amount on Record |
| Prior Sale | Oct 23, 1996 · Amount on Record |
| Deed Document Number | 200479445 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $100,307 (+2%) Land $35,730 Building $64,577 | |
| 2025 | $1,571.00 (+8.2%) Homeowner's exemption | $98,341 (+4.04%) Land $35,030 Building $63,311 |
| 2023 | $1,452.00 (+1.18%) Homeowner's exemption | $94,524 Land $33,671 Building $60,853 |
| 2022 | $1,435.00 |
Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| 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 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: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
Based on FCC filings for 611 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | CITY OF ANTIOCH serves 116,781 people |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| Lead | Under 1 ppb (2022–2024) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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