SECTION 1. Paragraph (f), section nineteen hundred and one of the Revised Administrative Code is hereby amended to read as follows:
"SEC. 1901. Functions of Bureau of Public Works.-The general functions of the Bureau of Public Works shall, among other things, comprise:
"(f) The supervision over the architectural and engineering features of buildings, parks, streets, and permanent constructions and improvements of public character throughout the Philippines whether pertaining to the National or other branch of the Government; and the authority to engage the services of private architects and engineers to prepare complete plans, specifications and other related contract documents for public buildings upon request and recommendation of the Government entity, agency or instrumentality upon confirmation of the Department of Public Works for which a building is to be constructed. The Director of Public Works shall be in charge of the preparation of the general plans for the improvement and future development of all the cities and municipalities existing or which may hereinafter exist in the Islands including; provincial centers. These plans, once adopted by the municipal or provincial authorities as the case may be with the approval of the Secretary of the Interior, shall stand as the "Official Plans" of said cities and municipalities and no change, modification, or revision shall be made in the execution of these plans without the approval of the Secretary of the Interior, upon the recommendation of the Director of Public Works."