In Gardena, permits come from the city's Building Services at City Hall, so when your job needs one, the start date waits on it. Before you hire anyone, check two things: a current state contractor license, and a Gardena business license, which the city requires of anyone working here, even a company based in another city like ours.
When a permit is needed, we look up what the city asks for your address and handle the application as part of the job, and I'll tell you what I found at the estimate. Price and schedule both move with how much old insulation has to come out, how many gaps need sealing, how hard the attic or crawl space is to reach, and whether foam or loose fill fits, and the written plan from your estimate puts your own job on paper. We do the same work next door in Hawthorne and Torrance, where we see a lot of the same kinds of houses.