A fire if you willfully set it, or pay someone else to set it.
A car accident if your willful negligence or willful act caused it. The same is true if the willful act or willful negligence of someone acting for you caused the accident. Progressive deterioration (explained below). However, see Special Procedure for Damage From Corrosive Drywall, later.”
https://www.irs.gov/publications/p547#en_US_2023_publink1000...