Under Pennsylvania property insurance law, when must a named insured have an insurable interest in the covered property in order to recover under a property policy?

Why this is the answer

40 P.S. § 116.4 codifies the rule that property insurance is enforceable only for persons who have an insurable interest in the property at the time of the loss. Unlike life insurance, where insurable interest is tested at policy inception, Pennsylvania anchors the property-insurance test to the moment a covered loss occurs. A purchaser who has sold the property before a fire, for example, would lack insurable interest at the time of the loss and could not recover, regardless of who paid the premium.