Contra Costa County property record for 2240 Castro St, Martinez, CA 94553 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,180 sqft · built 1954 |
| Lot Size | 0.101 acres (4,400 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $290,000 (Nov 2009) |
| Tax Bill | $5,196 (2025) |
| Flood Zone | Zone AO (high risk) |
| APN | 372-221-007-1 |
| Primary APN | 372-221-007-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,180 sqft Living Area |
| 1st Floor Area | 1,180 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Lot Area | 4,400 sqft (0.101 acres) |
| Garage Area | 360 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 2240 CASTRO ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3247 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | BERTOLA TRACT LOT 4 BLK 148 |
| Legal Subdivision | BERTOLA |
| Legal Block | 148 |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 318000 |
Source: Contra Costa County records · APN 372-221-007-1
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 2240 CASTRO ST, MARTINEZ, CA 94553-3247 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Nov 06, 2009 · Amount on Record |
| Deed Sale | Nov 06, 2009 · Amount on Record |
| Prior Sale | Feb 09, 2007 · Amount on Record |
| Deed Document Number | 2009264404 |
| Last Transfer Date | Apr 23, 2025 |
| Transfer Doc | 0000038761 |
| 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 | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $375,226 (+2%) Land $263,318 Building $111,908 | |
| 2025 | $5,196.00 (+6.52%) Homeowner's exemption | $367,869 (+4.04%) Land $258,155 Building $109,714 |
| 2023 | $4,878.00 (+1.63%) Homeowner's exemption | $353,586 Land $248,132 Building $105,454 |
| 2022 | $4,800.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone AO sheet flow 1–3 ft |
|---|---|
| Flood Hazard | High |
| 100-Year Floodplain | Yes 1% annual chance |
| Special Flood Hazard Area | Yes |
| Flood Insurance Requirement | Required (federally backed mortgages) |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Wildfire Risk | Moderate above 44% of the US · above 26% of California |
|---|---|
| Wildfire Likelihood | About 1 in 1,316 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
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