Tribunal findings on structural defect created issue estoppel; liability determined on summary judgment.
Homeowners brought motions to amend their statement of defence and counterclaim to particularize defective installation of a radiant in‑floor heating system and to obtain summary judgment based on findings from the Licence Appeal Tribunal under the Ontario New Home Warranties Act.
The court held the amendment was not a new cause of action but merely a particularization of negligence already pleaded concerning the concrete foundation and construction defects.
Applying issue estoppel principles, the court found the Tribunal’s determination that the heating system constituted a major structural defect was a final judicial decision between the same parties and resolved the same issue.
Summary judgment was therefore granted on liability for breach of contract relating to the heating system, but damages were left for determination at trial.
SCJSuperior Court of JusticeFeb 15, 2013