Here's a link about a single family house that is "supposedly exempt from rent and eviction controls like the post 1979 buildings".
I know from over 10 years of experience in dealing at San Francisco City Hall and lobbying with all the apartment associations that there is no such thing as exemption from eviction controls in San Francisco.
This link was also referred to by Janan New, executive director of the SF Apartment Assoc.
Cut and paste this link if it does not link you directly or check out SF Chronicle article on Sept 8 or SF Gate article "Landlord-nightmare-in-eviction-attempt.
Peter T. Chin CA DRE 01866332