Understand key disclosure requirements for sellers in Washington state and learn how to comply effectively. Fill out all of this form and other papers you are attaching before you sign this form in front of a notary.1 Enter the tax year, company's federal employer identification number, name, and address in the proper area. You can deduct a part of your medical and dental expenses, and amounts you paid for certain taxes, interest, contributions, and other expenses. By law, most sellers of real property must provide a completed Seller Disclosure Statement (aka Form 17) to any buyer. This application can be filled out on your PC; if hand-written, please print legibly. Please use black or blue ink only. Page 6 and want to file for a refund of any. Publication out of court.