The City of Seaside issues building permits, and its application lists additions, repairs or reroofs, alterations and signs but doesn't name insulation, so it doesn't settle whether insulation on its own needs a permit for your building. Before we start, we check with the city's building office, which you can reach at (831) 899-6825 or through its permits page, and where a permit is needed we take care of the paperwork and set up the inspections. If your project needs planning review, that happens before the city takes any building permit applications, so it comes first on the calendar. The state Energy Code reaches changes to existing buildings, not just new ones, which is why a reroof can bring insulation rules with it, and California only lets builders install insulation certified by the state Department of Consumer Affairs, so you can check any product against its directory.
Around Seaside we mostly see older shops, small offices and rental buildings with flat or low-slope roofs, old insulation that's settled or gotten wet, and drafty spots where the walls meet the roof. We do the same work in Monterey, Marina and the cities around them.