My question involves a roommate in the State of: California
I rent a room in a house owned by my parents and they have appointed me property manager. One of the rooms is rented out to a female who moved in Dec. 2008. Lately, she has been having male guests over until late hours of the night. Just the other night, while she believed i was sleeping, she proceeded to have sex with her guest on the couch in the living room, which is a shared space. (I walked through the living room while they were saying goodbye outside and found the empty condom wrapper on the coffee table). On top of being completely disrespectful of the other roommates, she has put me and the landlords (my parents) in an awkward position. My question is, would this act of misconduct be grounds for eviction? Should we issue a written warning first? There is no statement in the month to month lease specifically stating "no sex in the common areas" (shouldn't this be common sense though??) but there is a statement about being respectful and not disturbing the other roommates. I definitely want this matter formally addressed, but I need help finding a way of going about it. Any help would be appreciated! Thanks in advance!!

