An RPZ designation expiring does not automatically end your tenancy or require you to leave. It also does not, by itself, give a landlord an immediate right to increase the rent or evict you. The rent-increase rules will depend on the law in force, the type of tenancy and when any rent review notice was served; a dispute about compliance is ultimately decided by the RTB or a solicitor based on the facts. Check the latest guidance on the RTB and gov.ie websites.