Note: Even if you’re selling a home “as is” in Washington, you’re still required to be truthful and transparent about what you know.

What’s included in the Washington seller disclosure form?

Below is a section-by-section summary of what you’ll be asked to disclose when selling a home in Washington. Consider this a brief overview of the kinds of questions you’ll be asked on your disclosure form. Your actual form may vary.

Title
Authority to sell
Rights (options, leases, life estates)
Encroachments or boundary issues
Easements or access limitations
Zoning issues, restrictions, or pending studies
Assessments or covenants

Water
Water source (public, well, shared)
Agreements or easements tied to water
Water system problems or repairs
Adequate year-round supply
Treatment systems (owned/leased)
Water rights or usage history
Irrigation rights or irrigation water supply
Sprinkler system and defects

Sewer / On-site sewage
Type of waste system
Sewer connection availability
Extra sewer fees
On-site system permits, pumping, inspections
Known defects or repairs
Bedroom approval count
Drainfield location and system connections

Structural
Roof or basement leaks
Additions or remodeling (with permits/inspections)
Age of home
Settling or soil movement
Defects in major components (foundation, walls, windows, etc.)
Past pest or whole-house inspections
Attic/basement insulation

Systems and fixtures
Defects in electrical, plumbing, HVAC, appliances
Leased fixtures or systems
Wood-burning appliances and EPA certification
Fire-protection zone
Carbon monoxide and smoke alarms
Internet availability

Homeowners association / Common interests
HOA details and dues
Special assessments
Shared common areas

Environmental
Flooding, drainage, or fill material
Damage from natural events
Wetlands, shorelines, or critical areas
Hazardous materials (asbestos, radon, tanks, lead paint)
Soil or water contamination
Industrial/commercial history
Dumping or drug-site history
Utility equipment or radio interference

Other conditions and factors

This is an open-ended section where you can disclose anything not already covered that might affect the home’s value or a buyer’s decision, such as past insurance claims, neighbor disputes, or unusual property quirks.

Additional explanations

This is a freeform space to clarify any earlier answers or provide details that didn’t fit elsewhere. If you marked “yes” to something earlier in the form, this is your opportunity to explain it fully.

Download and print our Disclosure Litmus Test

Use this link to download a printable checklist (62KB) to prepare for completing the Washington seller disclosure form. The questions on this Seller Disclosure Litmus Test reflect the types of details and issues you may need to reveal about your home — and what buyers expect to know.

Check off anything that applies to your Washington property. If you’re unsure about something, make a note to ask your real estate agent or investigate further. The goal is to help you think through what needs to be documented and disclosed during the sale process.

What is not required to be disclosed? Washington law does not require you to disclose any untimely deaths or murders that might have occurred in the property, if a previous occupant had HIV or AIDS, or if a sex offender lives nearby. You’re also not obligated to disclose neighborhood rumors, the presence of supposed paranormal activity, or personal reasons for selling, unless you are directly asked and your answer could be misleading.

Common mistakes sellers make on the disclosure form

Here are some of the most common missteps sellers make when filling out Washington’s disclosure form:

Checking “yes” without explaining: If you check a yes box that includes an “Explain” line, failing to elaborate could lead to delays.
Guessing instead of explaining: If you’re not sure about something, don’t make assumptions — just state that you don’t know or add an explanation.
Failing to attach supporting documents: Inspection reports, permits, repair invoices, and warranties help verify your disclosures.
Not disclosing repaired issues: Even if you’ve fixed a problem listed on the form, like a roof leak or plumbing issue, it still needs to be reported.
Minimizing or softening the truth: Downplaying a defect can open you up to legal risk if the buyer later discovers the issue was worse than you led the buyer to believe.

What if you fail to disclose something important?

If you fail to disclose a known material fact about your Washington home, the buyer may have grounds to cancel the contract or sue you after the sale. In some cases, nondisclosure can be considered fraud under Washington law, particularly if the omission appears intentional. Being upfront now helps prevent bigger headaches later.

When and how buyers review the disclosure

Under Washington’s standard purchase contract, you’re expected to provide a completed Washington Seller’s Disclosure Statement within five business days of contract acceptance. The buyer then has three business days from receipt to review the form and either proceed with the transaction, request repairs, or cancel the sale entirely.

Partner with a top Washington agent to protect your sale

Disclosing your home’s condition is one of the most important — and legally sensitive — parts of the selling process in Washington. A top local agent can help you understand what’s required, avoid common pitfalls, and provide expert guidance so you can complete the Washington Seller’s Disclosure Statement accurately and confidently.

Unsure where to start? HomeLight’s free Agent Match platform connects you with trusted real estate agents in your Washington market. We analyze over 27 million transactions and thousands of reviews to determine which agent is best for you based on your goals and selling timeline.

You’ll find more helpful guides in HomeLight’s Washington Seller Resource Center.

See the top real estate agents in 10 Washington markets:

If you’re buying and selling at the same time, check out HomeLight’s Buy Before You Sell program, which can streamline the entire process so you only move once. Watch this short video to see how it works.

Header Image Source: (Roger Starnes Sr/ Unsplash)