Site: nolo.com
... So, how does a tenant evict a roommate who’s not on the lease? ... Master Tenants
Some cities, such as San Francisco, allow landlords to designate “master tenants ... Most of the time, master tenants are tenants who at one point signed a lease with cotenants, then continued ... Often, a tenant takes on the responsibilities of being a master tenant in order to remain at the rental ... If you’re a master tenant who needs to remove a subtenant, consider contacting a local landlord-tenant ...