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PredecessorOntario New Home Warranty Program
Founded(1976 (1976))
Number of locations
Area served

Tarion, formerly known as the Ontario New Home Warranty Program, was created by the Government of Ontario in 1976 to administer the Ontario New Home Warranties Plan Act.[1] Its primary purpose is to protect consumers of new homes by ensuring that builders abide the provincial legislation. It is financed entirely by builder registration, renewal and home enrollment fees.


As the regulator of Ontario’s new home building industry, Tarion registers new home builders and vendors, enrols new homes for warranty coverage, investigates illegal building practices, resolves warranty disputes between builders/vendors and homeowners, and promotes high standards of construction among Ontario’s new home builders. Tarion also works with the building industry to help educate new home buyers about their warranty rights, and about how to protect and maintain their warranty. Builders must meet the standards listed in the Construction Performance Guidelines, 3rd Edition.[2]


  1. ^ Ontario. "Ontario New Home Warranties Plan Act". R.S.O. 1990, CHAPTER O.31. Retrieved 15 June 2011.
  2. ^ "Construction Performance Guidelines for the Ontario Home Building Industry, Third Edition" (PDF).

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