Nope! They can pack up your belongings, put them outside, change the locks and you are hereby evicted! Heck, they could probably get you for trespassing or unlawful break-in if they wanted to be complete jerks!! It is NOT your house. Next thing you'll say is you've been paying in "cash"!!?? I'd start looking for a new place and get it in YOUR name or at least go on the lease with someone else but be mindful you'll also be on the hook for the lease if the other person bails. NOLO press is a good resource for tenant law. They have a complete series of books in this regard which is self-help. However, all of the above being said you ARE in San Francisco where tenants have sometimes more power than landlords!! You would find a sympathetic ear from a tenantâ€™s rights group. They are zealots but in your case this is what YOU want!