A landlord must generally use the prescribed rent-review notice, state the proposed rent and effective date, and give at least 90 days’ notice. Rent reviews are normally limited to once every 12 months, and the increase may be restricted by the rent-control rules applying to the tenancy, including any applicable national or Rent Pressure Zone limits. Check the RTB’s current guidance and rent calculator, as rules and exemptions can change. If you dispute the increase, you can consider RTB dispute resolution or seek advice from a solicitor or Threshold.