Many states have seller disclosure laws.
Disclosure laws require sellers to make certain disclosures to buyers about the condition of their property. In some states, like California, sellers must complete a state-mandated seller disclosure form which asks specific questions about the property. Other states don't have mandatory disclosures, but some have voluntary seller disclosure. Some realty companies require sellers to complete a seller disclosure form before they will list the property for sale, even though state law may not require it. Caveat emptor placed the burden of discovering property defects on the buyer.