A Rent Pressure Zone (RPZ) is a legal area where rent increases are limited by specific rules; it does not usually mean that rent is frozen completely. A rent freeze means no rent increase is allowed for a stated period, regardless of inflation or market rents. Under RPZ rules, a landlord may generally review the rent only at permitted intervals and within the applicable cap, subject to exemptions and changes in the law. Check the latest guidance on gov.ie or the RTB website, as the rules can change and the outcome of any dispute depends on the tenancy’s facts.