Rent increases in Ireland are governed by rules that differ depending on whether a tenancy is inside a Rent Pressure Zone, how much time has passed since the last increase, and what notice a landlord is required to give. This page is general information, not a determination for your own tenancy.
How often rent can generally be increased
Outside specific circumstances, a landlord is generally limited in how frequently they can increase rent within a given period, and must provide a minimum amount of written notice before an increase takes effect — the exact frequency limit and notice period are set by current legislation and worth confirming directly with the RTB rather than relying on a general rule of thumb.
What a valid rent increase notice must include
A rent increase notice generally needs to be in writing, state the new rent amount and the date it takes effect, and — inside an RPZ — reference how the increase complies with the applicable cap; a notice missing this information, or proposing an increase above what's legally permitted, can potentially be challenged.
Challenging a rent increase
A tenant who believes a proposed rent increase is unlawful — because it exceeds an RPZ cap, was issued with insufficient notice, or doesn't meet the required form — can raise the matter through the RTB's dispute resolution service rather than simply refusing to pay or accepting the increase without question.
Key takeaways
Check whether your tenancy is in a Rent Pressure Zone before assessing any proposed increase, confirm the notice you received meets the current legal form and timing requirements, and use the RTB's dispute resolution service if you believe an increase is unlawful.