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

https://simonvttd586.urbanvellum.com/posts/san-diego-reroofing-permits-when-roof-work-may-require-approval-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.