Sec. 5. Application. The Maine Revised Statutes, Title 5, section 1764- A does not apply to any new or substantially renovated state-owned or state-leased buildings or buildings built with state funds, including buildings funded though state bonds or the Maine Municipal Bond Bank, that have received design approval prior to the effective date of rules adopted pursuant to that section. Title 20-A, section 15908-A does not apply to any school construction project that receives voter approval at a public referendum pursuant to Title 20-A, section 15904 prior to the effective date of rules adopted pursuant to Title 20-A, section 15908-A.