Tarion Warranty Corporation is a private corporation established in 1976 to serve as the Regulator of the new home building industry in Ontario. In this role, Tarion licenses all new home and condominium builders pursuant to provincial legislation. This statute requires new home builders to provide purchasers with warranty coverage that is guaranteed by Tarion. The Corporation also establishes minimum time standards for after-sales service, and adjudicates issues between homeowners and builders. Over 1.45 million homes in Ontario have been protected under warranty by Tarion.

Tarion maintains and Eastern Ontario office in Ottawa: