Contra Costa County property record for 6645 Alhambra Ave, Martinez, CA 94553
| Property Type | Commercial Office |
|---|---|
| Details | 1,420 sqft · built 1978 |
| Lot Size | 0.18 acres (7,840 sqft) |
| Owner | 2 Trust Names on File |
| Tax Bill | $3,201 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 152-022-006 |
| Primary APN | 152-022-006 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 1,420 sqft Gross Area |
| 1st Floor Area | 1,420 sqft |
| Year Built | Built 1978 |
|---|---|
| Effective Year Built | Effective 1978 |
| Lot Area | 7,840 sqft (0.18 acres) |
| Street Address | 6645 ALHAMBRA AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-6104 |
| Property Category | Commercial |
| Property Type | Commercial > Office > Commercial Office |
| Legal Description | PARCEL MAP 5 PG 41 PCL A |
| Legal Subdivision | PM 5 41 |
| Legal Tract | 5PM41 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1015 |
| Census Tract | 321103 |
6645 Alhambra Ave, a commercial property, is held in a trust since July 2024.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 6645 ALHAMBRA AVE, MARTINEZ, CA 94553-6104 |
| 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 | 2 Names on Deed |
|---|---|
| Last Transfer Date | Jul 19, 2024 |
| Transfer Doc | 0000071367 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 6645 Alhambra Ave was $3,201.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $182,822 (+2%) Land $39,964 Building $142,858 | |
| 2025 | $3,201.00 | $179,238 Land $39,181 Building $140,057 |
| 2023 | $3,486.00 (+11.02%) | $172,279 Land $37,660 Building $134,619 |
| 2022 | $3,140.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 6645 Alhambra Ave 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 6645 Alhambra Ave is moderate, ranking above 40% of the US, with a 0.05% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 40% of the US · lower than 76% of California |
|---|---|
| Wildfire Likelihood | 0.05% annual chance |
| Exposure | Direct burnable vegetation |
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 MARTINEZ serves 31,015 people · EPA ID CA0710006 |
|---|---|
| Water Source | Purchased surface water from CONTRA COSTA WATER DISTRICT |
| Last State Inspection | Oct 2025 |
| Lead | Under 1 ppb (2023–2025) 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 298 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 DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband, Verizon.
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