Thanks for the conversation today - glad we connected and I was able to get you some history on the Santa Rosa Air Center.
As we discussed, the area of the Air Center was not annexed into the City until circa 1995-1997 - prior to that, the unincorporated area would have been under County of Sonoma jusridiction. The Air Center itself may have been owned by the Federal government, as it was the site of the US Naval Air Base and a US Army Reserve Center prior to annexation.
You might want to check in with the County Historical Records Commission: http://sonomacounty.ca.gov/Historical-Records-Commission/
Based on GIS aerials, it looks like the barracks were/are located at 3840 Finley Ave. The hangars were maybe at 3842 Finley, and the US Army Reserve Center was located at 3890 Finley. The City's records prior to annexation and development of the area and surrounding area are scanty. I did find an old request for City water/sewer services. I also found some documents pertaining to the deactivation of the Air Center in a development file - it appears that development couldn't move forward until the Air Center was decommissioned.
As we discussed, here is the link to the City's GIS page - there are a few different ways you can view the area.
Gaye LeBaron might have some good information on the Air Center, and she may have covered the fire there as well.
I've uploaded the few documents we have that aren't strictly development based. That's pretty much it for historical information, besides stacks of planning and development and building permits!
You might also contact the Sonoma County Library - there are digital historical collections as well as the History Annex. They may have useful information as well.
As we discussed, I'll go ahead and close your request. If you find you need some more specific records in the future, don't hesitate to submit another request!