In cases where the City Planning Commission is empowered to approve certain uses of premises under the provisions of this Zoning Code, the applicant shall furnish such surveys, plans or other information as may be reasonably required by said Commission for the proper consideration of the matter.
   The Planning Commission shall investigate the circumstances of each such case and shall notify such parties, who may in its opinion be affected thereby, of the time and place of any hearing which may be held relative thereto as required under its rules of procedure.
   The Planning Commission may impose such conditions or limitations in granting approval as may in its judgment be necessary to fulfill the spirit and purpose of this Zoning Code.
   Any approval given by the Planning Commission, under which premises are not used or work is not started within six months, or when such use or work has been abandoned for a period of six months, shall lapse and cease to be in effect.
(1975 Code § 5.195)