No building or other structure shall be erected, moved, added to or structurally altered, nor shall any building, structure or land be established or changed in use without a permit issued by the Zoning Inspector. Zoning permits shall be issued only in conformity with the provisions of this Part unless the Zoning Inspector receives a written order from the Building and Zoning Appeals Board deciding an appeal or variance, or from the Planning Commission approving a conditional use or from Council approving a planned unit development district, as provided by this Part.