Selling a house with biohazards or a death can be a complex process, but it is possible, especially to "Sell my house fast" buyers who are often willing to take on properties that need significant work. In many jurisdictions, it's legally required to disclose if a death occurred in the property, especially if it was a violent death or one that resulted from a condition of the property. Biohazards, such as mold, lead, or asbestos, must also be disclosed. However, it's important to note that laws vary by location. For instance, in Nevada, according to NRS 40.770, deaths (including homicide or suicide) do not need to be disclosed unless the death resulted from a condition of the property itself. In most cases, the cash buyer would first hire a professional biohazard cleanup company to ensure the property is safe for future occupants.