You will generally need the names and contact details of the landlord and tenant, the rental property address, tenancy dates, and a clear description of the dispute and outcome you are seeking. Have relevant documents ready, such as the lease, notices, rent records, messages or emails, photographs, and a dated timeline of events. The RTB may ask for further information or evidence during the process, so keep copies of everything submitted. Check the current form and guidance on the official RTB website, as requirements and fees can change; the eventual outcome depends on the facts and the RTB’s dispute resolution process.