Insurance lawyers will tell you that a person must have an insurable interest in the insured property to recover under an insurance policy. This is also stated in the 1993, Dallas Court of Appeals opinion, Jones v. Texas Pacific Indemnity Co.
The purpose of the requirement of an insurable interest is to discourage the use of insurance for illegitimate purposes as discussed in the 1999, Austin Court of Appeals opinion, Valdez v. Colonial County Mutual Insurance Co.
The 1998, Fort Worth Court of Appeals opinion, Foust v. Old American County Mutual Fire Insurance Co., tells us an insurable interest exists when the insured derives a pecuniary benefit or advantage by the preservation and continued existence of the property or would sustain pecuniary loss from its destruction.