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Understanding Rent Pressure Zones (RPZs)
Since June 2025, all of Ireland is designated as a Rent Pressure Zone. This means landlords are limited in how much they can increase rent for existing tenancies.
Under the current rules, rent in an RPZ can only increase by a maximum of 2% per year (or the rate of inflation as measured by the Harmonised Index of Consumer Prices, whichever is lower). For most tenants, the effective cap is 2%.
Landlords must also give proper written notice of any rent increase, provide at least 90 days' notice, and can only review rent once every 12 months. If your landlord hasn't followed these rules, the increase may be invalid regardless of the amount.
Frequently Asked Questions
How often can my landlord increase the rent?
Your landlord can only review your rent once every 12 months. They must give you at least 90 days' written notice before the increase takes effect, and the notice must include specific information such as the new rent amount, the date it takes effect, and details of how the new rent was calculated.
What if my flat is a new build — does the cap still apply?
Certain properties built after specific dates were originally exempt from RPZ rent caps. However, the exemption criteria are narrow and have changed over time. If your landlord claims a new-build exemption, ask them to confirm the property's planning permission date and BER certificate. If in doubt, contact the RTB for clarification.
What can I do if my rent increase is illegal?
If you believe your rent increase exceeds the legal limit, you should first raise the issue with your landlord in writing. If they don't resolve it, you can take a case to the Residential Tenancies Board (RTB) for dispute resolution. The process is free and you don't need a solicitor. FairRent can generate a legal letter for you to send to your landlord as a first step.
This calculator provides general guidance only and is not legal advice. Rent regulations can be complex and may depend on factors not captured here. For specific legal advice, consult a solicitor or contact the Residential Tenancies Board (RTB).