BANDSTRA, J.

In these consolidated cases involving plaintiff's duty to defend defendants Calvin E. Karr and Jayne H. Mohr under a homeowner's insurance policy, defendants appeal as of right from a trial court order granting summary disposition to plaintiff pursuant to MCR 2.116(C)(10) (no genuine issue with respect to any material fact). We affirm.

Defendants Calvin E. Karr and Jayne H. Mohr were insured under a homeowner's insurance policy issued by plaintiff. Defendants Richard L. Aho, Cindy L. Aho, and John A. Rolando ("buyers") purchased a house in Marquette, Michigan, from defendants Karr and Mohr ("sellers"). After taking possession, buyers sued sellers, claiming that the roof and garage leaked and that there were structural problems with the home. Buyers alleged that sellers had negligently misrepresented the condition of the home in a disclosure statement and through representations made by their agent, a realty company. Plaintiff undertook a defense of sellers under a reservation of rights agreement. Plaintiff then brought this declaratory judgment action, seeking a determination that sellers' homeowner's insurance policy did not cover the claims asserted by buyers and that plaintiff had no duty to defend the suit or to indemnify sellers.

Sellers argue that the trial court erred in granting summary disposition, maintaining that the allegations in buyers' underlying complaint were sufficient to trigger plaintiff's duty to defend sellers in the underlying lawsuit. We review the trial court's determination of a motion for summary disposition de novo on appeal. UAW v Civil Service Comm, 223 Mich. App. 403, 405; 566 N.W.2d 57 (1997).

Under the insurance policy, plaintiff is required to defend sellers with respect to any claim brought for "property damage caused by an occurrence." Whether plaintiff has a duty under this language to defend sellers depends upon the allegations in the complaint filed by buyers. Fitch v State Farm Fire Casualty Co, 211 Mich. App. 468, 471; 536 N.W.2d 273 (1995). However, "an insurer's duty to defend . . . does not depend solely upon the terminology used in a plaintiff's pleadings. Rather, 'it is necessary to focus on the basis for the injury and not the nomenclature of the underlying claim in order to determine whether coverage exists. . . . [S]o must the allegations be examined to determine the substance, as opposed to the mere form, of the complaint.'" Allstate Ins Co v Freeman, 432 Mich. 656, 662-663; 443 N.W.2d 734 (1989), quoting Illinois Employers Ins of Warren v Dragovich, 139 Mich. App. 502, 507; 362 N.W.2d 767 (1984).

Relying principally on Western Casualty Surety Group v Coloma Twp, 140 Mich. App. 516; 364 N.W.2d 367 (1985), sellers argue that the "occurrence" in the present case is their alleged negligent failure to reasonably inspect and make disclosures regarding the condition of the house and that, as a result, buyers experienced problems with the house as alleged in their complaint. In Western Casualty, the insured was a township whose building inspector allegedly negligently failed to properly inspect a home during its construction. The insurance policy at issue had the same "caused by an occurrence" language at issue in the present case. Id. at 519. Suit was brought by the purchasers of the home who claimed that various problems with the home were the result of the negligent inspection. Id. To determine whether the insurance company had a duty to defend the underlying action, our Court concentrated on whether there was a sufficient causal connection between the alleged failure to properly inspect and the problems experienced by the purchasers. Id. at 523. Our Court reasoned that, under state law, the township and its inspector had the right and duty to issue a permit for home construction only if the plans and specifications complied with state law and other applicable laws and ordinances, to periodically inspect construction to ensure compliance with those laws and ordinances, to stop construction if any violation occurred, and to issue a certification of occupancy only if the work covered had been performed in accordance with the permit, laws, and ordinances. Id. at 522-523. Accordingly, "the causal nexus between the alleged improper inspection process and the property damage exists because, had the inspection been properly performed, the [work] would have been prevented from continuing to the next phase of construction until corrections had been made." Id. at 523.

Applying the Western Casualty reasoning to the facts of this case, we conclude that the trial court properly granted summary disposition in plaintiff's favor. Unlike the buyers in Western Casualty, buyers here do not allege that, had the sellers properly inspected the home, property damages would have been avoided. In fact, buyers do not even allege that sellers' failure to properly inspect the home preceded the defective conditions about which they complain. The gist of their allegations is quite the opposite, i.e., that sellers' negligent inspection failed to uncover problems with the property that had long existed. Viewing the substance of buyers' complaint, we conclude that they allege no property damage "caused by" sellers' alleged failure to inspect. Accordingly, under the insurance policy, plaintiff was under no duty to defend sellers in the underlying action.

Because we are affirming the trial court's grant of summary disposition to plaintiff, we need not address plaintiff's other assertion that no duty to defend existed under the insurance policy based on an exclusionary clause contained in the policy.

We affirm.