Contra Costa County property record for 4133 Spaulding St, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,547 sqft · built 1990 |
| Lot Size | 0.233 acres (10,134 sqft) |
| Owner | Individual Name on File |
| Last Sale | $392,000 (Jan 2014) |
| Tax Bill | $5,641 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 052-303-016-1 |
| Primary APN | 052-303-016-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,547 sqft Living Area |
| 1st Floor Area | 1,441 sqft |
| 2nd Floor Area | 1,106 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Lot Area | 10,134 sqft (0.233 acres) |
| Garage Type | Attached |
| Garage Area | 627 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 4133 SPAULDING ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8218 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T6855 L132 |
| Legal Tract | 6855 |
| Legal Lot Number | 132 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 308002 |
4133 Spaulding St is owned and occupied by an individual who bought it in January 2014.
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 File |
|---|---|
| Mailing Address | 4133 SPAULDING ST, ANTIOCH, CA 94531-8218 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 28, 2014 · Amount on File |
| Deed Sale | Jan 28, 2014 · Amount on File |
| Deed Document Number | 201413572 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4133 Spaulding St was $5,641 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 | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $490,139 (+2%) Land $106,277 Building $383,862 | |
| 2025 | $5,641.00 Homeowner's exemption | $480,530 Land $104,194 Building $376,336 |
| 2023 | $5,310.00 (+1.61%) Homeowner's exemption | $461,872 Land $100,149 Building $361,723 |
| 2022 | $5,226.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4133 Spaulding St in Zone X, an area of minimal flood risk.
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.
The area around 4133 Spaulding St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001 |
|---|---|
| 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, 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 432 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Verizon.
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