What You Need to Know By law, all new homes built in Ontario are provided with a warranty by the builder, this law is called the Ontario New Home Warranties Act & Regulations. Tarion’s role is to ensure that purchasers of new homes receive the coverage they are entitled to under their builder’s warranty. For more information on the act, visit the Ontario New Home Warranties Plan Act Webpage and for more information about Tarion, who we are and what we do visit our About Us page. This is the Homeowners' Homepage, it provides a general overview of the warranty, coverage and everything Tarion has to offer new home purchasers and owners. To help you find the information you need, the content on this page and under the menu item titled Homeowners is tailored for you, whereas the menu items under Builders and the Condo Corporations are tailored for those audiences.