Permits for work on private property here come from the city's Building Division, which also does the inspections. The city wants inspections done as the work goes, before anything gets covered up, so on a permitted job an inspection can set when we close up a section and move on. Before you hire anyone, check two things: that the contractor holds a California contractor license, and that they hold a City of Redondo Beach business license, because the city won't issue a permit to a contractor without one.
When your job calls for a permit, I look up what the city asks for at your address, tell you at the estimate, and we handle the application as part of the job. The price turns on what's already up there, whether old insulation has to come out first, how many gaps need sealing, and how easy the attic or crawl space is to get into. The schedule turns on that same cleanup plus any inspection. We plan jobs the same way next door in Torrance and Hermosa Beach, looking up each city's rules for your address.