A master tenant who resides in the same rental unit with his or her subtenant may evict the subtenant without just cause. However, for any subtenancy commencing on or after May 25, 1998, the master tenant may not evict a subtenant without just cause unless the master tenant disclosed in writing to the subtenant that the tenancy is not subject to the just cause eviction provisions of the Ordinance prior to the commencement of that tenancy. Master tenants must comply with state law unlawful detainer procedures in order to evict a subtenant.
Only landlords are allowed to evict their tenants. A master tenant is considered a landlord in relation to his or her subtenant, meaning that a master tenant is able to evict a subtenant. Subtenants do not have the right to evict their master tenant or other subtenants or roommates. Similarly, roommates who are co-tenants cannot evict their fellow co-tenants.
Source: San Francisco Rent Board