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Real Estate

What happens if my builder is registered with Tarion but the actual construction company is different?

TSL Written by the Treadstone Law team· Updated June 2026

Tarion registers builders and vendors — the entities that sell new homes to consumers. Under the New Home Warranties Plan Act, it is the vendor and/or builder who has the statutory obligation to provide the warranty, and they must be registered with Tarion. The warranty obligation runs to the purchaser from the registered entity.

In practice, larger development projects often involve a layered corporate structure: a vendor entity (the company that signs the purchase agreement with buyers) and a construction company or general contractor that actually builds the home. These may be separate legal entities. What matters for your Tarion coverage is whether the vendor — the party you contracted with — is registered with Tarion.

The construction entity that builds the home does not independently need to be registered with Tarion, but the vendor/builder relationship must be properly constituted. Tarion's registration system captures these structures.

If you have questions about who exactly is warranting your home, check the Tarion warranty certificate you receive after possession. It identifies the registered vendor and the home. Any claim must be made against the registered vendor through Tarion's system. If the corporate structure is unusually complex or confusing, your real estate lawyer can help clarify who bears the warranty obligation.

Key takeaways

  • Tarion registration applies to the vendor (who sells the home), not necessarily the contractor
  • Your warranty certificate identifies the registered vendor responsible for your coverage
  • Complex corporate structures in development projects don't eliminate the warranty obligation
  • If unclear who bears warranty responsibility, have a lawyer review the corporate relationships
This is general information, not legal advice. It doesn’t create a lawyer–client relationship, and the rules can change. For advice on your situation, a Treadstone real estate lawyer can help.
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