All you have to do is call wildlife & fisheries and they will tell you of any reptile laws, or snake specific laws. They are the best people to call to get information.

Some of the laws in the part of LA where I live are:
1.) You have to have a permit one your snake exceeds 12+ feet.
2.) You have to have a permit to own venomous species.

They're may be some additional ones, but as far as i'm concerned the 1st one is the only one that applies to me as my Yellow may see 12+ feet in a few years. Other then that the only venomous snake I have is rear fanged so I don't have to have a permit to keep him. The requirements are that the snake has to be in a cage thats under lock & key, and it has to be in an escape proof room.