It depends on your state. California, for example, requires disclosing a death in the home if it happened within the last three years. The specific cause of death generally does not have to be disclosed, aside from certain more serious situations, though in practice that information is often searchable online anyway. Whether it creates negotiating leverage depends entirely on the buyer pool. Some buyers will not consider a home where someone passed away, regardless of circumstances, and others do not care at all. Any discount opportunity comes down to your specific market rather than a reliable bargaining chip. On the broader question, states like California use standard disclosure forms built around specific yes-or-no questions: deaths at the property, insurance claims, work performed, and so on. Sellers are required to answer honestly and to disclose known material problems like leaks or mold. Minor issues a seller genuinely does not know about, a dead outlet or a sticky window, are exactly what your inspector is there to catch. Disclosure rules vary by state, so confirm what yours requires, and lean on the inspection for everything the forms do not cover.