The Office of Sangguniang Panlungsod, City of San Juan is the legislative branch of the city’s local government unit, created and recognized by virtue of Section 11, Article IV of Republic Act Numbered Ninety Three Hundred and Eighty-Eight (RA 9388), otherwise known as Act Converting the Municipality of San Juan into a Highly Urbanized City to be known as the City of San Juan, and Republic Act Numbered Seventy-One Hundred and Sixty (RA 7160), otherwise known as The Local Government Code of 1991.