Hey Buddy Buck here! Washington law says that when you sell your home, you must fill out a Seller Disclosure Statement (also known as Form 17).Under RCW 64.06, Washington's Seller Disclosure Statute, sellers are required to disclose material defects to the property. I am An Heir, Does A Personal Representative Need To Submit A Seller Disclosure Form 17 On The Sale Of Real Property? My understanding is that Form 17 applies only to "Real Property" and that land must be part of the sale in order to be considered "Real Property". Does the owner of a manufactured home that sits on leased land have to fill out Form 17 in Washington State? This would be a state law. In Texas almost everyone is required to fill out a seller disclosure. The Form 17 is governed under Chapter 64.06 of the Revised Code of Washington, and in the case of improved residential real estate, RCW 64.06. While relaxing in your new living room, you look up and notice a water spot in the ceiling.