In accordance with Chatham Board of Health regulations, Title 5 inspections are valid for 18 months. If the dwelling is a part of a condominium complex with greater than five units, then the condominium association is required to have all its septic systems inspected every three years. Therefore, these inspections are valid for three years. Town of Chatham regulations require the system to be inspected within sixty days of the sale, or a waiver must be received from the Health Department.