Usually, a rent increase above the applicable Rent Pressure Zone (RPZ) limit is not allowed unless a specific legal exemption applies, such as a substantial change to the property. The landlord must follow the rent-review rules, including giving the required notice and providing the calculation and supporting details. Check the RTB’s current guidance because the applicable limits and exemptions can change. If you believe the increase is unlawful, you can ask the RTB about dispute resolution, but the outcome will depend on the facts of your tenancy.