Requires all sellers of residential real property to complete and provide to the buyer a property condition disclosure statement, which requires disclosure of the presence of hazardous substances, asbestos, and methane gas, and of any radon testing performed on the property. Requires sellers to provide a copy of any radon testing reports and to report any known material defects in carbon monoxide detectors. Also requires seller to indicate whether the property has been tested for mold and to provide known mold test reports and to indicate whether the structure has experienced damage or seepage from heavy rainfall or other natural flooding events.