First, owners must have a valid reason, or "good cause," to evict a tenant. If a landlord finds out about an unauthorized sublease, they may pursue eviction proceedings.You will need to give them 30 days notice if they are a month to month subtenant (meaning they have no written lease). Ignoring these steps and proceeding to sublet without the consent of the landlord can lead to eviction. Such breaches of the lease are "curable" however. Simply serve the subtenant with written notice requiring her to vacate the premises within 30 days. Evictions resumed on July 20, 2020.