When selling a house in Phoenix, AZ, you must disclose any material facts about the property that could affect its value or desirability. This includes major repairs that are needed, whether the property is in a flood zone, and any environmental hazards on the property. You must also disclose any known defects in the property, such as a cracked foundation or leaks in the roof. Failure to disclose these things can result in legal action being taken against you by the buyer.