What Sellers Are Actually Responsible for Disclosing to Buyers

The Core Obligation: Known Material Defects

At the center of every state's disclosure framework is one consistent principle: sellers must tell buyers about known material defects — conditions that significantly affect the property's value or a reasonable buyer's decision to purchase.

The key word is known. Sellers are not legally required to conduct investigations they haven't already performed, nor are they expected to disclose problems they had no way of knowing about. But if a seller is aware of a leaking roof, a cracked foundation, or a history of basement flooding, those facts must be disclosed on the appropriate state form.

Common categories that fall under this obligation include:

• Structural defects (foundation, framing, load-bearing walls)
• Roof condition and known leaks
• Water intrusion, drainage problems, or past flooding
• Mold or evidence of mold
• Plumbing, electrical, or HVAC system defects
• Pest infestations or prior termite damage
• Environmental hazards such as asbestos or underground storage tanks

Sellers who have made repairs should think carefully about what those repairs addressed. A patched roof or a remediated mold issue may still require disclosure if the underlying condition was significant.

Federal Requirements: Lead-Based Paint

Beyond state law, one federal rule applies uniformly across the country. The Residential Lead-Based Paint Hazard Reduction Act requires sellers of homes built before 1978 to provide buyers with an EPA-approved disclosure form, share any known lead paint records or reports, and give buyers a 10-day window to conduct a lead paint inspection before finalizing the sale.

This requirement applies to virtually all residential properties constructed before that year — with narrow exceptions for foreclosures and housing for the elderly or disabled where children will not reside. Sellers who fail to comply can face civil and criminal penalties under federal law.

What Sellers Are Not Required to Disclose

Disclosure law draws a line between facts that are material and those that are not. Sellers are generally not required to disclose:

• Issues they genuinely did not know about
• Minor cosmetic imperfections
• Conditions that are visible and apparent to a buyer during a walkthrough
• In most states, the fact that a former occupant had a serious illness unrelated to the property itself

Some states, however, have extended disclosure requirements to so-called psychological defects — such as a murder or suicide on the property within a certain timeframe. California, for example, requires disclosure of deaths on the property within the past three years. Sellers should review their state's specific form to understand these nuances.

It's also worth understanding that selling a home "as-is" does not eliminate disclosure duties. As-is language signals that the seller won't make repairs — it doesn't suspend the legal obligation to reveal what they already know. Buyers retain the right to inspect, and sellers retain their liability for concealment. For a broader view of how undisclosed issues can disrupt transactions, see our article on why homes fall out of escrow.

Why Transparency Protects Sellers, Too

It can feel counterintuitive to proactively share a home's problems with a potential buyer. But withholding known defects is one of the riskiest moves a seller can make.

When buyers discover undisclosed issues — whether during inspection, after closing, or through a neighbor's disclosure — sellers face potential lawsuits for misrepresentation or fraud, claims for repair costs or diminished value, and in some cases, court-ordered rescission of the entire transaction. These outcomes are typically far more costly than the disclosure itself.

“The disclosure process is not just a legal formality — it's one of the most important trust-building steps in a real estate transaction. Buyers who feel informed are buyers who stay at the table.”

— National Association of Realtors, Trade organization representing real estate professionals across the United States

Proactive disclosure also tends to reduce negotiation turbulence. Buyers who receive a complete, honest disclosure package upfront are less likely to use inspection findings as leverage to renegotiate aggressively. Understanding how buyers approach these conversations can help — our piece on what sellers often misunderstand about real estate negotiations explores common friction points sellers encounter at the table.

Sellers who are uncertain about what to include should work with a licensed real estate agent and, where complex issues are involved, a real estate attorney. The disclosure form itself is a useful starting point — most state forms prompt sellers through the required categories systematically.

This article is for general informational purposes only and does not constitute legal advice. Disclosure requirements vary by state and individual circumstance. Consult a licensed real estate professional or attorney for guidance specific to your situation.