Contra Costa County property record for 1240 Shell Ave, Martinez, CA 94553 · Last verified July 2026
| Property Type | Public Works > Federal Property (Exempt) |
|---|---|
| Year Built | Built 1951 |
| Square Footage | 4,806 sqft Gross Area |
| Lot Size | 19,321 sqft (0.444 acres) |
| Tax Bill | $3,120.00 (2025) |
| Primary APN | 375-191-001-3 |
|---|---|
| Alternative APN |
|
| Building Area | 4,806 sqft Gross Area |
|---|---|
| 1st Floor | 4,806 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1951 |
| Lot Area | 19,321 sqft (0.444 acres) |
| Street Address | 1240 SHELL AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2836 |
| Property Usage | Land which may be one of the following: Public spaces (i.e. parks and beaches), public buildings (i.e. schools, hospitals, courthouse), public services (i.e. water treatment, electrical grid/product, dams) Property Usage |
| Type | Public Works > Federal Property (Exempt) |
| Legal Description | MARTINEZ LAND #4 1TO4 12 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 4 |
| Census Block | 4008 |
| Census Tract | 319002 |
Source: Contra Costa County records · APN 375-191-001-3
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 | 4005 PORT CHICAGO HWY, 250, CONCORD, CA 94520-1180 |
| Owner Type | Owner is a Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Refreshed | 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 |
| 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 | $295,027 (+2%) Land $69,981 Building $225,046 | |
| 2025 | $3,120.00 (-32.39%) | $289,243 (+4.04%) Land $68,609 Building $220,634 |
| 2023 | $4,615.00 (+466.95%) | $278,013 Land $65,946 Building $212,067 |
| 2022 | $814.00 |
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