Many homeowners in San Diego are installing solar systems on their homes in response to their constantly rising utility bills. But often times the installers are not as careful on the roof as you would like, and they will damage and break roof tiles. Many times when they attempt repairs to the broken tiles, these "repairs" are substandard. I have also seen many times where they did not use the proper flashing for roof penetrations.
It's not unusual for the building inspector to not access the roof to inspect the actual installation or repairs.
Protect yourself and your property by having your roof inspected by an independent third-party after your solar installation.