What to Know Before You Buy or Sell: Form 17 Seller Disclosure Statement. I'm going to show you how to send the form 17 to your sellers have them be able to fill out all of the boxes get it back and then be able to deliver it.Learn more about the NWMLS Form 17 (or Seller Disclosure Statement). Almost all sellers in WA must complete and provide one to a buyer. 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. Direct contractors in Washington can use this free Model Disclosure Statement form download to provide preliminary notice to the property owner. Almost every home seller in WA must complete a Seller Disclosure Statement, aka the Form 17. Learn more, and get a copy you can use for free! For 12 days in 2025, the state won't require a Discover Pass to park on statemanaged lands. This disclosure statement is given to the consumer (customer) from the contractor showing they are registered in the state of Washington.