| Headquarters Administration Building | |
| Location: | Big Basin Redwoods State Park |
| Coordinates: | 37.1719°N -122.2222°W |
| Demolished: | 2020 (by wildfire) |
| Built: | 1936 |
| Architecture: | Park Rustic |
| Added: | December 20, 2015 |
| Delisted: | December 28, 2023 |
| Refnum: | 15000914 |
The Headquarters Administration Building of Big Basin Redwoods State Park, Santa Cruz County, California, was a historic structure built in 1936 by crews of the Civilian Conservation Corps. It was built out of local materials (redwood logs and stone), and was one of the best-preserved examples of the CCC's work in the California state park system. The building continued to perform its original function, housing the park's administrative offices and serving as a contact point for park visitors,[1] until it was destroyed by the wildfires sparked by the lightning storm of August 16, 2020.[2] It was listed on the National Register of Historic Places in 2017, and was delisted in 2023.