Form 17

Key Takeaways

• Chapter 64.06 RCW requires the seller of most improved residential real property in Washington to deliver a completed seller disclosure statement, the form brokers call Form 17, not later than five business days after mutual acceptance of a written agreement unless the parties agree otherwise.
• A buyer who receives Form 17 has three business days to rescind the purchase and sale agreement by delivering a written statement of rescission to the seller, and the deposit is returned. If no written rescission is delivered inside that window, the statement is deemed approved and accepted by the buyer.
• Form 17 is a disclosure and not a promise. RCW 64.06.020 provides that the seller disclosure statement is for disclosure only, is not part of the written agreement between buyer and seller, and is not to be construed as a warranty of any kind.
• A buyer may expressly waive receipt of the seller disclosure statement under RCW 64.06.010, but the environmental section may not be waived if the answer to any question in that section would be yes.

What It Means

Form 17 is the name Washington brokers use for the seller disclosure statement that chapter 64.06 RCW requires in most sales of improved residential real property. The seller completes it from personal knowledge and delivers it to the buyer, and it is one of the first documents a new broker handles on a listing.

The form walks the property section by section. It covers title, water, sewer or on-site sewage, structural condition, systems and fixtures, homeowners' association and common interests, environmental conditions, and manufactured and mobile homes, then closes with a full disclosure section for anything else the seller knows.

Two ideas make the form easier to hold onto. First, it reports what the seller knows, not what an expert would find. The statutory form tells the buyer in capital letters to obtain and pay for qualified experts for a comprehensive examination of the property, so it never stands in for a Home Inspection. Second, it is a disclosure and not a warranty. A problem written onto the form has been disclosed, which is a different legal position from a Latent Defect the seller knew about and left off. That distinction is what most Form 17 disputes turn on.

How It Works in Washington

The timeline is the part Washington exams press on. Under RCW 64.06.030, delivery must occur not later than five business days after mutual acceptance of a written agreement, unless the buyer and seller agree otherwise. From the day the buyer receives the statement, the buyer has three business days, or as otherwise agreed, either to approve and accept it or to rescind the agreement by delivering a written statement of rescission to the seller. Rescinding returns the buyer's deposit. Doing nothing also has a consequence: if no written rescission is delivered inside the window, the statement is deemed approved and accepted. That is the Three Business Day Rescission Right in its statutory form.

RCW 64.06.040 governs what happens after delivery. If the seller later learns, from a source other than the buyer or someone acting for the buyer, of additional information or an adverse change that makes a disclosure inaccurate, the seller must amend the statement and deliver the amendment to the buyer. The buyer then has three business days from receiving the amendment either to approve it or to rescind. There is a release valve for the seller: no amendment is required, and no right of rescission arises, if the seller takes whatever corrective action is necessary to restore the accuracy of the disclosure at least three business days before the closing date.

Form 17 does not discharge the broker's own duty. RCW 18.86.030 requires a broker to disclose all existing material facts known by the broker and not apparent or readily ascertainable to a party, and that duty belongs to the broker personally, whatever the seller wrote. The same section is careful in the other direction: a broker owes no duty to conduct an independent inspection of the property and no duty to independently verify the accuracy or completeness of any statement made by either party. So a broker who knows the crawlspace floods discloses it as a Material Fact even if the seller answered no, but a broker who simply passes along the seller's answers has not failed a duty by not checking them. Our post on the Form 35 inspection contingency covers the inspection side of the same transaction.

Example

Priya lists her Olympia house and accepts Marcus's offer of $572,000 on Thursday, May 28, 2026. Her broker delivers the completed Form 17 to Marcus on Monday, June 1, comfortably inside the five business days that RCW 64.06.030 allows after mutual acceptance. Marcus now has three business days, Tuesday June 2 through Thursday June 4, to rescind in writing. He reads the form, sees nothing that worries him, and does nothing. By Friday the statement is deemed approved and accepted, and his $15,000 earnest money stays in play.

On Monday, June 29, Priya's septic contractor tells her the drainfield has failed. Closing is set for Friday, July 10. Because she learned this from someone other than Marcus and it makes her sewer answers inaccurate, RCW 64.06.040 requires her to amend Form 17 and deliver the amendment. She delivers it the same day. Marcus now has three fresh business days, June 30 through July 2, either to accept the amendment or to rescind and take his $15,000 back.

Priya had one other route. Had she replaced the drainfield and restored the accuracy of the disclosure at least three business days before the July 10 closing date, RCW 64.06.040 would have required no amendment at all, and Marcus would have had no rescission right to exercise.

Common Mistakes and Exam Traps

• Five business days is the seller's deadline to deliver Form 17. Three business days is the buyer's window to rescind after receiving it. Exam questions routinely swap the two numbers.
• The three business day rescission window runs from the buyer's receipt of the seller disclosure statement, not from mutual acceptance and not from the date the seller signed the form.
• Silence favors the seller. Under RCW 64.06.030 a buyer who delivers no written rescission notice inside the window is treated as having approved and accepted the statement, so no signature is needed to accept it.
• An amendment under RCW 64.06.040 does not automatically hand the buyer a fresh rescission right. If the seller corrects the problem and restores the accuracy of the disclosure at least three business days before the closing date, no amendment is required and no rescission right arises.