Any alteration, incidental alteration or minor work done to the front wall of any building not of the specified building type, shall comply with the following standards:

(a)        alteration or replacement of storefronts shall comply with the provisions of Section 101-734; and

(b)        alteration or replacement of front walls shall comply with the provisions of Sections 101-721 (Height and setback) and 101-733 (Special provisions for development and enlargement).