Contra Costa County property record for 221 Berrellesa St, Martinez, CA 94553 · Last verified July 2026
| Property Type | Light Industrial |
|---|---|
| Details | 5,160 sqft · built 1958 |
| Lot Size | 0.22 acres (9,583 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $600,000 (Dec 2014) |
| Tax Bill | $9,868 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 373-242-005-8 |
| Primary APN | 373-242-005-8 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 5,160 sqft Gross Area |
| 1st Floor Area | 5,160 sqft |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1978 |
| Lot Area | 9,583 sqft (0.22 acres) |
| Street Address | 221 BERRELLESA ST |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-1009 |
| Property Category | Industrial |
| Property Type | Industrial > Light Industrial |
| Legal Description | POR T L SURVEY #4 |
| Legal Subdivision | TIDE LAND SURV #4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1018 |
| Census Tract | 316000 |
Source: Contra Costa County records · APN 373-242-005-8
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 | 266 LOS CERROS AVE, WALNUT CREEK, CA 94598-3105 |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 09, 2014 · Amount on Record |
| Deed Sale | Dec 09, 2014 · Amount on Record |
| Deed Document Number | 2014218324 |
| Prior Transfer Date | Dec 26, 2012 |
| Prior Transfer Doc | 0000330966 |
| 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 | $735,519 (+2%) Land $140,970 Building $594,549 | |
| 2025 | $9,868.00 (+5.56%) | $721,098 (+4.04%) Land $138,206 Building $582,892 |
| 2023 | $9,348.00 (+1.15%) | $693,099 Land $132,841 Building $560,258 |
| 2022 | $9,242.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133160001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Cost | Premium on Record median of 42 individual NFIP policies nearby |
| Nearby Flood Policies | 42 in force |
| Nearby Flood Claims | 20 (1982–2017) |
| Claims Outside the SFHA | 4 of 20 |
| Most Recent Claim | Jan 2017, rainfall accumulation, Severe Winter Storms, Flooding, And Mudslides |
| Claims By Storm |
|
| Wildfire Risk | Moderate above 44% of the US · above 26% of California |
|---|---|
| Wildfire Likelihood | About 1 in 1,613 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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, availability as of December 31, 2025 · Published October 2026 · based on 371 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Radiate Holdings | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 2,000 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| AT&T | Fixed Wireless | 100 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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