To fumigate or not fumigate
It is no surprise that a home in Southern California, built with a wood frame, will have termites. There are different types, but the bottom line is, they feast on wood and wood products.
If the termite inspector sees evidence of termite infestation, such as droppings, etc., they will either recommend local treatment or fumigation.
People are concerned about the chemicals used in fumigating their homes. There are different types of methods and gases for fumigation. I am not an expert on that. What I do want to point out here is, if you have a tile roof, or a light weight metal roof, there is 100% chance that it will be damaged to some extent when you fumigate.
The workers have to get on your roof to put up the tent that covers the house. The covering is heavy. They cannot possibly tiptoe on the roof while pulling that heavy material onto the roof. You will be asked to sign a waiver saying they will not be responsible for damage to the roof. If you do not sign it, they will not do the job.
You can expect broken tiles. It’s not a big deal to replace them. You just need to anticipate that this will happen and not get upset when it does.
If you have a composition roof, you do not have to worry.