Port Chicago Naval Magazine National Memorial
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Why it's listed
Port Chicago Naval Magazine National Memorial is a historic district located at 4202 Alhambra Avenue in Martinez, Contra Costa County, California. It was listed on the National Register of Historic Places on October 28, 2009, under reference number 11000237. The record available here is an administrative locator card rather than a full nomination, and it is flagged as an automatic listing with undocumented National Park Service status. Because of that, the card contains no physical description of the site, no construction dates, no named designers or builders, and no explanation of the events or themes behind its recognition. Only the name, address, county, listing date and category can be confirmed from this material. Anyone seeking details on the district's history, boundaries or condition would need to consult other source documentation, since none is included in this record.
Significance in brief: The supplied document is only an administrative locator card marked as an automatic listing with undocumented NPS status. It gives no statement of significance, so the reasons for listing are not described.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 11000237, listed October 28, 2009. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence low).
Key facts
| Address | 4202 Alhambra Ave., Martinez |
|---|---|
| County | Contra Costa County |
| Listed | October 28, 2009 |
| Reference number | 11000237 |
| Resource type | District |
| Level of significance | National |
| Coordinates | 37.99202, -122.13068 (NPS GIS) |
What listing means for this property
This is a historic district. Buildings within its boundary are either contributing (they add to the district's significance) or non-contributing. Owners of contributing income-producing buildings can claim the 20% federal rehabilitation tax credit; homeowners should look at state credits. National Register districts impose no design review by themselves; a local historic district ordinance, if one exists, does (the difference explained).
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 11000237.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q7230541
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.