Form 17: What You Actually Have to Tell a Buyer When You Sell in Washington

THE FORM EVERYBODY RUSHES

Every seller in Washington gets handed the same document early in the process. It is the seller disclosure statement, and everybody in the business calls it Form 17.

Most sellers treat it like the terms and conditions on a software update. Tick, tick, tick, sign. I understand why. It is long, it asks about things you have not thought about in years, and it feels like paperwork standing between you and the sale.

It is actually one of the most important documents in the whole transaction. How you fill it in decides whether it protects you or whether it hands the buyer an exit at exactly the wrong moment.

WHAT IS FORM 17 ACTUALLY FOR

Washington law, in chapter 64.06 RCW, requires sellers of residential property to give the buyer a disclosure statement. The form walks through the house section by section. Title. Water. Sewer or septic. Structural. Systems and fixtures. Homeowners association and common interests. Environmental. Manufactured and mobile homes where they apply.

For most questions you answer yes, no or don't know, and you explain the yeses.

The statute is clear that the statement is for disclosure only and is not a warranty. It is not an inspection either. You are not expected to crawl under the house with a flashlight to answer it. You are expected to be honest about what you know and what you have lived with.

HOW DOES THE THREE-DAY WINDOW WORK

This is the part most sellers do not realize.

Under the statute, the form has to be delivered no later than five business days after mutual acceptance, unless the contract says otherwise. The buyer then gets three business days after receiving it, again unless otherwise agreed, to either approve it or rescind the deal. If they do not deliver a written rescission inside that window, the statement is treated as approved.

Read that again from the seller's side. For three business days after the buyer reads your disclosure, they can walk away. They do not have to give you a reason.

That is why timing matters. I want the form completed and in the buyer's hands the moment we have an accepted offer, not five days later. Every day that window stays open is a day your sale is not really a sale yet.

WHAT ACTUALLY NEEDS TO GO ON IT

Everything you know about. That is the honest answer and it is also the sensible one.

These are the ones I watch sellers hesitate over, again and again.

Water. The basement that took on water in a big storm, the crawlspace that has been damp, the window that leaked before you had it resealed. If you know about it, it goes on.

Past repairs. A roof leak that was fixed, a sewer line that was replaced, foundation work. Fixed problems are the easiest disclosures there are, because the story ends well. Attach the receipts.

Unpermitted work. The garage you converted, the bathroom somebody added decades ago. Buyers and their inspectors find these. You would much rather they find them on the form.

Boundaries. The fence that is not quite on the line, the neighbor's driveway that clips the corner, the easement you agreed to years ago.

Septic. In Pierce County, a home on septic also needs the Health Department's Report of System Status when it sells. The form and that report should tell the same story.

WHAT HAPPENS IF YOU LEAVE SOMETHING OFF

Best case, the inspector finds it and you are renegotiating from a position of weakness, because now the buyer is wondering what else you did not mention.

Worst case, it surfaces after closing. I am not an attorney and I will not pretend to give legal advice. What I can tell you is that the sellers I have watched end up in disputes after a sale almost never got there because of the problem itself. They got there because of what they said, or did not say, about it.

A disclosed defect is a price conversation. An undisclosed one is a trust problem, and trust problems are expensive.

WHAT ABOUT ANSWERING DON'T KNOW

It is a legitimate answer when it is true. If you inherited the house, if you have rented it out for ten years, if you genuinely have no idea when the water heater went in, say so.

It is not a hiding place. Answering don't know about something you obviously know about is worse than answering yes. It reads as evasive, and a good buyer's agent will notice. Use it honestly and use it sparingly.

DOES EVERY SALE NEED ONE

Almost every ordinary sale does. The statute lists specific exemptions, including foreclosures, certain transfers between family members, and transfers made by the personal representative of an estate. A buyer can also expressly waive receiving it, though in a normal sale that is unusual and I would not plan around it.

If you are selling as the executor of an estate, raise it at the start, because it changes the paperwork. If none of the exemptions apply to you, you are filling it in.

HOW I HAVE SELLERS DO IT

Fill it in at the kitchen table, early, before we list. Not the night an offer comes in.

Pull out every receipt, warranty and permit you have. Roof, furnace, water heater, windows, septic pumping. Put dates next to the answers.

Where you say yes, explain briefly and factually. What happened, when, what was done, and who did it. No drama and no minimizing.

Then think seriously about a pre-listing inspection. If you are not sure what is going on under the house, finding out before a buyer does lets you fix it, price it or disclose it on your own terms.

WHY THIS HELPS YOU SELL

Buyers read a careful, detailed disclosure as the mark of a careful owner. I have watched a thorough Form 17 with a folder of receipts settle a nervous buyer more than any staging ever did.

It also shortens the renegotiation after inspection. If the inspector's findings are already on the form, the buyer knew about them when they wrote the offer. There is much less left to argue about, and much less room for a surprise at day twelve.

If you are deciding what to fix and what to simply disclose, read my WHICH REPAIRS ACTUALLY PAY YOU BACK breakdown. And if you are still a few weeks away from listing, the 30-DAY PRE-LISTING PLAN is where to start.