The capitol building commission shall review and approve or reject all plans recommending substantial physical changes inside or outside the state Capitol building or surrounding complex, including the public meeting rooms, hallways and grounds, which affect the appearance thereof. The approval of the commission is mandatory before a contract may be let for work which constitutes a substantial physical change, or before changes are started if the work is not done under a contract. As used in this article, the surrounding complex shall include the Governor's mansion and other buildings used by the Governor as part of his residence, the state science and cultural center, all state office buildings located in the immediate vicinity of the state Capitol, and the roadways, structures and facilities which are incidental to such buildings. As used in this article, substantial physical change shall include, but not be limited to, permanent physical changes that alter the appearance of the public areas of the capitol building and surrounding complex. The secretary of the Department of Administration shall promulgate rules and regulations, pursuant to the provisions of chapter twenty-nine-a of this code, which rules and regulations shall be subject to the approval of the capitol building commission, to implement the provisions of this article.