For pre-1978 residential properties, federal law (Title X) requires disclosure of any known lead-based paint or hazards, provision of the EPA pamphlet, and a 10-day inspection opportunity (unless waived). Licensees must ensure required disclosure forms are completed and disclose known material facts, but they must not state lead exists if they do not actually know. Licensees are not responsible for abatement and must never assist in concealing hazards.