(b) A spending unit which is granted any grounds, buildings, office space or other space leased in accordance with the provisions of this article may not order or make permanent changes of any type thereto, unless the Executive Director of the Real Estate Division has first determined that the change is necessary for the proper, efficient and economically sound operation of the spending unit.
(c) For purposes of this section, a "permanent change" means any addition, alteration, improvement, remodeling, repair or other change involving the expenditure of state funds for the installation of any tangible effect which cannot be economically removed from the grounds, buildings, office space or other space when vacated by the spending unit.