Shingle roofs in San Diego must be installed under California code and local city rules

https://augusthmin584.alderbrief.com/posts/torch-down-roofs-in-san-diego-modified-bitumen-for-low-slope-roofing-3

Shingle roofs in San Diego must be installed under California code and local city rules, and reroofing often requires a permit, especially when roof covering renewal is involved.