Use the Residential Tenancies Board’s official Rent Pressure Zone map or address lookup and search by the property’s full address or Eircode. Check the result against the relevant tenancy start date, as RPZ designations and rent rules can change over time. The map is a useful guide, but exemptions and the tenancy’s specific circumstances may affect how the rules apply. For a dispute, the RTB’s process or advice from a qualified solicitor can assess the individual facts.