Rules of Interpretation.
Section 4
SEC. 4. Rules of Interpretation.—(1) Any power of a barangay, municipality, city or province shall be liberally construed in its favor. Any fair and reasonable doubt as to the existence of the power shall be interpreted in favor of the local government unit concerned. (2) The general welfare provisions in this Code shall be liberally interpreted so as to give more power to local governments in promoting the economic uplift, social welfare and material progress of the people in the community. (3) Vested rights existing on the date of the effectivity of this Code arising out of contracts or any other source of obligation between a province, city, municipality or barangay and another party, shall be governed by the original terms and provisions of said contract or the law in force at the time such rights became vested and in no case shall this Code infringe on them. (4) When in the resolution of controversies arising under this Code no legal provision or jurisprudence can be found to apply, resort may be had to the customs and traditions in the place where the controversy arose.