Extra Guest in Rental Room not on lease.

[Danny Le]

Hello everyone, here in Anaheim, CA. We just completed our house hacking in our home and have one room that was rented out. She has been here for 5 days now and last night started bringing a guest. The parking is a situation here so that is why I had to ask if the boyfriend will be staying here often. I did some research online on what I should do but it seems that those are for Apartments and I am uncertain if that applies to rental rooms. 

I dont mind someone added here but will require them to be added to the lease agreement and background check. Can I charge more per person? What are my rights as a landlord for rooms rentals?

Thanks!!!