A landlord does not usually need RTB permission before serving a valid Notice of Termination, but they must follow the legal notice rules and send a copy of the notice to the RTB within 28 days. They cannot lawfully change the locks, remove your belongings or force you out without due process. If you remain after the notice expires, the landlord generally needs to use the RTB dispute resolution process and, if necessary, court enforcement. Whether an eviction is valid depends on the tenancy’s facts, so consider getting advice from a solicitor or Threshold.