If the tenant doesn’t voluntarily move out after the landlord has properly given the required notice to the tenant, the landlord can evict the tenant. In order to evict the tenant, the landlord must file an Unlawful Detainer action in the local superior court. This is part of the eviction process.
It is VERY important that landlords evict tenants using the proper procedures. For example, the landlord cannot physically remove or lock out the tenant, cut off utilities such as water or electricity, remove outside windows or doors, or seize (take) the tenant’s belongings in order to carry out the eviction. The landlord must use court procedures.
Learn more about the unlawful detainer process here: DCA.CA.gov