There is no single official average rent increase for Kildare, because figures vary by property type, location and whether the tenancy is new or existing. The RTB Rent Index can help you compare typical rents for Kildare, but it does not decide what increase is lawful in an individual tenancy. A landlord must follow the rent-review rules and applicable statutory limits, give the required written notice and provide the prescribed information. Check the latest guidance and rent calculator on the RTB or gov.ie websites, or speak to a solicitor if you believe the proposed increase is unlawful.