Roof replacement or repair in San Diego often depends on scope, since work exceeding 50% of the roof area or 2

https://mylesspgu691.rivertonbrief.com/posts/tile-roofs-in-san-diego-why-the-underlayment-matters

Roof replacement or repair in San Diego often depends on scope, since work exceeding 50% of the roof area or 2,500 square feet in a year can trigger full compliance requirements.