What Is a Seller’s Disclosure in Washington State? Everything You Need to Know Before Listing Your Home
If you're preparing to sell a property in Washington State, there's one document you’ll need to understand inside and out: the Seller Disclosure Statement, also known as Form 17. This isn’t just paperwork—it’s a legal requirement that can impact your sale, protect you from future liability, and even affect the price you’re able to get for your home.
In this blog, we’ll break down exactly what a seller disclosure is, why it matters, and how to complete it properly so you can move through your home sale with confidence.
What Is a Seller Disclosure Statement?
In Washington State, the Seller Disclosure Statement (Form 17) is a legally mandated document that requires home sellers to disclose known material defects and conditions about the property.
The law is clear: even if you’re selling a property “as-is,” you are still required to disclose what you know about the home’s condition. The goal is to ensure transparency and prevent disputes between buyers and sellers after the sale.
Is a Seller Disclosure Required in Washington State?
Yes. RCW 64.06 of the Revised Code of Washington requires that sellers of residential real estate (including condos, manufactured homes, and single-family residences) provide a completed Form 17 to potential buyers.
There are only a few exceptions:
Transfers between family members
Foreclosure sales
Estate or trust sales (in some cases)
If you’re selling a typical residential property, chances are you must complete this form.
What Does the Disclosure Cover?
The disclosure form is extensive and touches on nearly every aspect of the property, including:
Title and zoning
Water sources and systems
Sewer/septic systems
Structural integrity and systems (roof, HVAC, plumbing, electrical)
Additions or remodels
Environmental hazards (mold, asbestos, lead paint)
Pest infestations
Legal issues (boundary disputes, liens, or litigation)
Each section asks whether the seller is aware of specific issues. If you don’t know the answer to a question, you’re allowed to indicate “Don’t Know”—but intentional omissions or misstatements can lead to legal trouble.
How Accurate Does It Need to Be?
While you're not expected to perform a full home inspection, you must answer truthfully based on actual knowledge. If a buyer later discovers that you withheld or lied about a defect, you could be held legally liable, even after the sale.
Sellers should:
Be honest and transparent
Avoid guessing if unsure
Provide supporting documentation when possible (e.g., past repair invoices)
It’s always better to over-disclose than under-disclose.
When Should You Provide the Seller Disclosure?
You must deliver the completed Form 17 before the buyer makes a written offer. If the buyer receives the disclosure after signing an agreement, they have three days to rescind the contract—no questions asked.
In a fast-moving market like Seattle or Tacoma, this timeline is critical. Always have your disclosure ready before listing your property.
What Happens If You Don’t Provide One?
Failing to provide a seller disclosure when required could give the buyer the right to cancel the transaction—even up to closing. It also opens the door for post-sale lawsuits, especially if issues are discovered that you knew about and didn’t disclose.
Tips for Filling Out the Disclosure Correctly
Take your time – Don’t rush the process. Read each question carefully.
Review past repairs – Gather maintenance records, permits, and invoices to help you respond accurately.
Walk through the property – Refresh your memory of any issues that may not be obvious.
Ask a professional – If you’re unsure how to respond, consult a real estate professional or attorney.
Remember: an honest, well-documented disclosure gives buyers confidence—and builds trust.
Conclusion
The Seller Disclosure Statement is more than a form—it’s your legal responsibility as a home seller in Washington State. Being upfront about your home’s condition not only protects you from future disputes but also helps ensure a smoother, more successful transaction.
Whether you're listing your home in Spokane, Everett, or King County, make sure you understand the disclosure process before listing. Proper preparation and honesty are key to a seamless sale.
Have questions about seller disclosures in Washington? Our team is here to help clarify the process and guide you every step of the way. Contact us now to get support from local real estate professionals who understand the market inside and out.