Navigating the rental process in Ontario means understanding the official notices used by the Landlord and Tenant Board (LTB). These notices are the first step in resolving many issues between landlords and tenants — whether it’s about unpaid rent, needed repairs, ending a lease, or illegal activity. There are notices that landlords serve to tenants, and others that tenants can file to address issues like harassment, maintenance problems, or rent abatements. Each notice has a specific purpose, required timelines, and a process that must be followed. In this guide, we’ll break down the most common and important LTB notices. Whether you’re renting a home or managing one, understanding these forms is essential to protecting your rights and resolving disputes legally and efficiently!