To act in an advisory capacity to the Commission on questions relating to zoning and to conduct investigations and hold public hearings when the board deems necessary, on all matters or proposals to change zoning regulations, and report its findings and recommendations on such matters and proposals to the Commission.
To study an existing City plan, with the view to improving same so as to provide for the development, general improvement and probable future growth of the City, and from time to time make recommendations to the Commission for changes in the existing City plan so as to incorporate new developments or for the adoption of a new City plan.
To investigate and approve or disapprove all new plats to be presented to the Commission for approval to perform such other duties as may from time to time be assigned to such Board by the Commission (See City Charter, Section 312).