How the recent changes in the Residential Tenancies Act affect Ontario Landlords? The Residential Tenancies Act regulates how leases are structured to ensure tenants rights are protected under the Act in the event they face unlawful rent increases or eviction, and sets out restrictions on when a Landlord can give notice to the Tenant to vacate. The new Residential Standard Form Lease must be used after April 30th, 2018. The Government has just released a new Residential Stand