Seller Disclosure (Form 17) in Washington

Of all the paperwork in a Washington home sale, the one that quietly carries the most legal weight is the seller disclosure statement — better known as Form 17. It looks like a simple questionnaire, but how you complete it can be the difference between a clean closing and a lawsuit months later. If you're selling a house in Clark County or anywhere in Southwest Washington, here's exactly what the seller disclosure (Form 17) in Washington is, the law behind it, what each section asks, who is exempt, and how to fill it out so it protects you instead of exposing you.

What Form 17 Is — and the Law Behind It

Form 17 is Washington's Real Property Transfer Disclosure Statement, required by RCW 64.06. The statute, with the disclosure form itself written into RCW 64.06.020, requires that a seller of residential real property deliver a completed disclosure statement to the buyer. In plain terms: the law makes you put in writing what you know about the condition of the home before the buyer commits.

The purpose is straightforward. Buyers can't see behind the walls or know the history of a roof, a well, or a flooding basement. Form 17 forces the person who does know — you, the seller — to answer a standardized list of questions honestly. It is not a warranty and not a substitute for the buyer's own inspection; it's a disclosure of what you actually know.

Nearly every seller of a residential home in Washington must provide it. A short list of transfers are exempt (more on those below), but if you're selling your house to an ordinary buyer on the open market, plan on completing Form 17 — there's no opting out of it for a standard sale.

The Buyer's 3-Business-Day Right to Rescind

Here is the part that makes timing matter. Once the buyer receives your completed Form 17, they have three business days to rescind the purchase agreement. To back out under this right, the buyer must deliver a signed, written notice of rescission within that window.

This three-day clock is the reason a good broker pushes to get Form 17 into the buyer's hands early — ideally right when the agreement is signed, not days before closing. If the disclosure is delivered late, the buyer's rescission window can still be running as your closing date approaches, leaving your sale exposed at the worst possible moment. Delivering it promptly lets the window open and close cleanly, well ahead of the finish line.

What Form 17 Covers, Section by Section

Form 17 walks through the home category by category. You'll answer "yes," "no," or "don't know" to a long list of specific questions in these areas:

• Title — ownership, easements, encroachments, boundary issues, and any liens or rights affecting the property.
• Water — the water source, water rights, shared wells, and irrigation.
• Sewer / On-site septic — whether the home is on public sewer or a septic system, and the system's condition and service history.
• Structural — the roof, basement and any flooding, additions or remodels, settling or movement, and pest or wood-destroying organism issues.
• Systems & Fixtures — electrical, plumbing, heating and cooling, appliances, and wood stoves or inserts.
• Homeowners' Association / Common Interests — HOA membership, dues, assessments, and shared or common-area obligations.
• Environmental — flooding, fill, soil or water contamination, and hazardous substances. (As noted below, this section gets special legal treatment.)
• Manufactured / Mobile home — additional questions that apply only if the property is a manufactured or mobile home.
• Full disclosure / other material defects — a catch-all asking whether there's any other material defect affecting the property that the prior questions didn't capture.

That last catch-all matters more than sellers expect. Even if a problem doesn't fit neatly under "roof" or "plumbing," if it's a material defect you know about, this is where it belongs.

How to Fill It Out the Right Way

The single best way to think about Form 17: it protects the seller who tells the truth and punishes the one who shades it. A few principles keep you on the right side of that line.

• Answer honestly, based on what you actually know. You're disclosing your knowledge, not guaranteeing the home is perfect.
• Use "don't know" truthfully. If you genuinely don't know the answer, say so — but "don't know" is not a place to hide something you do know.
• When in doubt, over-disclose. Disclosing a repaired issue, an old problem, or a quirk almost never hurts you. Failing to disclose a known defect is what creates liability. Over-disclosure protects you.
• Attach supporting documents. Inspection reports, repair invoices, permits, septic pumping records, and warranty paperwork all back up your answers and build buyer confidence.

Done well, a thorough Form 17 actually strengthens your position: it shows the buyer you've been straight with them, and it documents that you disclosed what you knew — which is your shield if a dispute ever comes up.

Who Is Exempt from Form 17?

RCW 64.06.010 lists specific transfers that don't require a Form 17. The most common ones:

• Estate sales by a personal representative. A transfer by the personal representative of a decedent's estate (or a bankruptcy trustee) is exempt — useful to know if you're selling an inherited house in Washington through probate.
• Foreclosure or deed-in-lieu of foreclosure.
• Gifts or transfers to close relatives — to a parent, spouse, domestic partner, or child, and transfers between spouses or partners in a dissolution (divorce).
• A buyer who recently owned the property — specifically, a buyer who held an ownership interest in the property within the prior two years.
• A buyer waiver. The buyer can expressly waive receipt of Form 17 — with one critical catch.

One more nuance: transferring an interest less than fee simple isn't a blanket exemption — for example, a vendee's interest under a real estate contract is not exempt. When in doubt about whether your sale qualifies for any exemption, confirm it with your broker or attorney rather than assuming.

"As-Is" Does Not Waive Your Disclosure Duty

This is one of the most common and most expensive misunderstandings in real estate. Selling a home "as-is" does not remove your Form 17 obligation, and it does not shield you from liability for known material defects or fraudulent concealment. Washington case law (such as Alejandre v. Bull) makes the point clear: "as-is" mainly signals that the seller won't be making repairs — it is not a license to hide known problems.

If you're considering an as-is sale, read our full guide to selling a house as-is in Vancouver, WA. The short version: you can sell as-is and complete an honest Form 17 — in fact you must do both.

What Happens If You Fail to Disclose

Form 17 isn't a formality you can fudge. A seller who knowingly conceals a material defect, or answers the form falsely, can be sued by the buyer after closing. In plain English: if the buyer discovers a serious problem you knew about and didn't disclose, they can come after you for the cost to fix it — and potentially more, under claims of misrepresentation or fraudulent concealment.

That's the whole reason over-disclosure is the smart play. The cost of disclosing a problem is, at worst, a price negotiation. The cost of hiding one can be a lawsuit, legal fees, and damages long after you thought the sale was behind you. Honesty on Form 17 is cheap insurance.

Common Seller Mistakes — and How an Agent Helps

Even well-meaning sellers stumble on Form 17. The patterns repeat:

• Rushing it. Treating a legally binding disclosure like a quick checklist and answering from memory instead of records.
• Using "don't know" to dodge. Marking "don't know" for something you actually do know — which reads as exactly what it is if a dispute arises.
• Under-disclosing. Leaving out a repaired or minor issue, thinking it'll scare the buyer, when disclosure would have protected them.
• Delivering late. Handing over the form close to closing and re-opening the three-day rescission window at the worst time.
• Assuming "as-is" or a waiver covers them. See above — usually it doesn't.

A good listing broker walks you through each section, helps you gather the inspection reports and repair records that support your answers, makes sure the form is delivered early enough that the rescission window runs cleanly, and flags anything that should be disclosed but is easy to overlook. Form 17 is one place where experienced guidance directly lowers your legal risk. It also fits into the larger sequence — see our overview of the steps to sell a house in Washington for where disclosure lands in the timeline, and our breakdown of the cost to sell a home in Washington for the rest of your closing obligations.

Thinking about listing and want someone to handle the disclosure paperwork — and the rest of the sale — correctly? Request a free broker estimate and we'll walk you through Form 17 and a full net sheet for your Southwest Washington home, so you sell with confidence and protection.

Frequently Asked Questions

Is the Form 17 seller disclosure required in Washington?

Yes. Under RCW 64.06, sellers of residential real property in Washington must deliver a completed Seller Disclosure Statement, commonly called Form 17, to the buyer. A limited set of transfers are exempt, such as a sale by the personal representative of a decedent's estate or a foreclosure, but a normal arm's-length home sale is not exempt.

What is the buyer's 3-day right to rescind on Form 17?

After receiving the completed Form 17, the buyer has three business days to rescind the purchase agreement by delivering a signed written notice. This is why timing matters: delivering the disclosure early gives the buyer's rescission window time to run well before closing instead of putting your sale at risk near the finish line.

Does selling a house as-is waive the Form 17 disclosure in Washington?

No. Selling as-is does not remove your duty to deliver Form 17, and it does not shield you from liability for known material defects or fraudulent concealment. As-is mainly signals you will not make repairs; you still must disclose known problems honestly.

What happens if a Washington seller fails to disclose a known defect?

A seller who knowingly conceals a material defect or answers Form 17 falsely can be sued by the buyer for damages such as repair costs and may face claims of misrepresentation or fraudulent concealment. Honest, complete disclosure is your best protection against a lawsuit after closing.

Can a buyer waive the Form 17 disclosure entirely?

A buyer may expressly waive receipt of Form 17 in most cases, but there is a key exception: the buyer cannot waive the Environmental section if any answer in that section would be yes. So a waiver does not let a seller bury a known environmental issue.

Avenir Gedarevich

Washington State Designated Broker

Avenir is the Designated Broker and Real Estate Agent of Vancouver Property Group, serving home sellers across Southwest Washington and Clark County. License #25011405.