In Monterey, building permits come from the city's Building and Safety Division. Its published permit list names work like re-roofs, new wiring and heating and cooling systems and doesn't name insulation, so before we start I check with that office for your address, and where a permit is needed we take care of the paperwork and set up the inspections. If your job needs one, plan around the city's plan review, which it says can take at least 15 business days for smaller projects and 20 for larger ones. You can also ask any contractor you're considering for a California contractor's license and a current City of Monterey business license, since the city wants both before it issues a permit.
The price mostly turns on how many inches are already up there, whether any of it has to come out first, how much sealing the attic or crawl space needs and how hard it is to get in, and the schedule turns on those same things plus any permit review. Older neighborhoods here often have tight streets, so we work out where the truck parks and how the hose reaches the house before the day of the job. We work the same kinds of houses next door in Pacific Grove and in Seaside, where we're based.