Hey Buddy Buck here! By law, most sellers of real property must provide a completed Seller Disclosure Statement (aka Form 17) to any buyer.Nearly all real estate sales in Washington State require a seller disclosure statement, also known as Form 17, to be given to the buyer. The Form 17 permits a seller to mark answers to the form questions as "Yes", "No", "I don't know", and "NA." To be used in transfers of improved residential real property, including residential dwellings up to four units, new construction,. Complete this form and file it with Form ST-8 to compute taxable sales sourced to Virginia localities. Be sure to complete all columns. Identification No.) 40 Middlesex Turnpike, Bedford, MA, 01730. (Address of principal executive offices, including zip code). Joint New York State return; use Form IT-200 or Form 17-201.