Contra Costa County property record for 403 Dimm St, Richmond, CA 94805
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,519 sqft · built 1947 |
| Lot Size | 0.122 acres (5,300 sqft) |
| Owner | Trust Name on File |
| Last Sale | $460,000 (Feb 2013) |
| Tax Bill | $9,592 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 519-271-016-7 |
| Primary APN | 519-271-016-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,519 sqft Living Area |
| 1st Floor Area | 1,519 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1947 |
|---|---|
| Effective Year Built | Effective 1947 |
| Exterior Material | Stucco |
| Roof Material | Wood Shingle |
| Lot Area | 5,300 sqft (0.122 acres) |
| Garage Type | Attached |
| Garage Area | 520 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 403 DIMM ST |
|---|---|
| City | RICHMOND |
| State | CA |
| Zip | 94805-2421 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | RICHMOND TRAFFIC CTR LOTS 58 & 59 BLK 10 |
| Legal Subdivision | RICHMOND TRAFFIC CENTER |
| Legal Block | 10 |
| Legal Lot Number | 58,59 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3011 |
| Census Tract | 370000 |
403 Dimm St is held in a trust since February 2013.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 403 DIMM ST, RICHMOND, CA 94805-2421 |
| 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 | Feb 15, 2013 · Amount on File |
| Deed Sale | Feb 15, 2013 · Amount on File |
| Prior Sale | Oct 12, 2005 · Amount on File |
| Deed Document Number | 201341389 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 403 Dimm St was $9,592.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Richmond City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $577,774 (+2%) Land $314,009 Building $263,765 | |
| 2025 | $9,592.00 | $566,446 Land $307,852 Building $258,594 |
| 2023 | $9,256.00 (+1.75%) | $544,452 Land $295,899 Building $248,553 |
| 2022 | $9,097.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 403 Dimm 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.
Wildfire risk around 403 Dimm St is low, with a 0.01% annual chance of wildfire.
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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 637 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Etheric Networks, GeoLinks.
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