N1 Notice is a form for landlords to notify tenant of rent increase. The rent increase must be approved by an order under the Residential Tenancies Act, 2006 which is called Annual Guideline Increase.

It will state when the increase happens containing both landlord and tenant information. Landlord must give 90 days notice before the increase.

A landlord may increase the rent if at least 12 months have passed since the last rent increase or since a new tenant moved into the rental unit