The court determined the policy's breach of contract exclusion precluded coverage for a claim against the general contractor insured for construction defects. Mt. Hawley Ins. Co. v. McAtamncy, 2024 U.S. Dist. LEXIS 497 (N. D. Cal. Jan. 2, 2024).

McAtamney, a general contractor dong business as Kilrea Construction, was hired by Jeffrey Horowitz for a home-renovation project. After completion of the project, Horowitz discovered defects in the work. He filed a complaint alleging that Kilrea breached obligations to construct and complete the work in an expeditious and workmanlike manner, free from any faults and defects. He brought claims for breach of contract, breach of implied warranty, negligence, neglignet supervision, and declaratory relief.

Kilrea's insurer, Mt. Hawley, agreed to defend, but reserved the right to later deny coverage for any uncovered claims. The breach of contract exclusion provided there was no duty to defend a claim for property damage arising from breach of an express or implied contract or warranty.