Real Estate

New Home Warranties in Ontario: How Tarion Works

Bought a newly built home in Ontario? You have warranty protection by law. Here is what it covers and how to use it.

Man in tuxedo signing a document with keys

New homes built in Ontario come with warranties under the Ontario New Home Warranties Plan Act, administered by Tarion.

The short answer

Your builder must fix covered defects: generally for one year on workmanship and materials, two years on things like water penetration and electrical, plumbing and heating systems, and seven years on major structural defects. Report problems in writing, within the deadlines.

The warranties

  • One year: defects in work and materials, and code violations affecting health and safety.
  • Two years: water penetration through the basement or building envelope, defects in electrical, plumbing and heating systems, and certain other items.
  • Seven years: major structural defects.

How to claim

  1. Report defects to your builder first, and to Tarion through its online portal, within the deadlines that apply.
  2. Use the 30-day and year-end forms or windows in the first year.
  3. Keep photos, dates and all communication.

Deposit protection

low angle photography of beige building

Tarion also protects deposits on new homes, up to set limits, if a builder can't complete the home.

Builder licensing

Builders must be licensed by the Home Construction Regulatory Authority (HCRA). You can check a builder's record before you buy.

Disputes

If you disagree with a Tarion decision, you can appeal to the Licence Appeal Tribunal.

Talk to NEO

Buying, selling and title matters need a real estate lawyer. NEO can help with related money disputes in Small Claims Court and refer you for the rest. Call 647-200-3526 or toll-free 888-519-2435, email info@neolegalservices.com, or book a free consultation.

Sources

Read next: Easements and Rights-of-Way: Sharing Land in Ontario

General Ontario legal information, not legal advice for your matter, and reading it does not create a retainer. Sources checked 16 October 2026: check the current law, forms and dates before you act.

Photos from Unsplash: Man in tuxedo signing a document with keys · low angle photography of beige building.

This article is general information for people in Ontario, not legal advice. Rules, forms and deadlines change, and every situation is different. Check the current rule or speak to a licensed legal professional before you act.

Not sure where you stand? A licensed paralegal can look at your documents and tell you your options.

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Law Society of Ontario — Barreau de l'Ontario
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