This is in California, San Francisco. I have a 2-bedroom unit. I have been renting a room per person (Tenant A and Tenant B). Tenant A and Tenant B each pay me separately for their room. They each have their own room and bathroom, but they share the common areas such as the kitchen and living room. Now, one of the guys (Tenant A) is leaving, so I'm trying to find a person to fill Tenant A's room.

By law, if I find someone good to fill Tenant A's room, do I need to get agreement/approval from Tenant B before I can rent to that person? Please advise, thanks!