Waterford is covered by Rent Pressure Zone rules, which generally limit rent increases to once every 12 months and the lower of 2% or the annual change in the Harmonised Index of Consumer Prices (HICP). Your landlord must give the required notice, state the new rent and provide the calculation supporting the increase. Different rules can apply when setting rent for a new tenancy or in specific circumstances, so the tenancy dates and reason for the change matter. Check the latest guidance from the Residential Tenancies Board (RTB), which can decide any dispute based on the individual facts.