Section 25-319. Regulations

The commission may from time to time promulgate,
  amend  and  rescind  such  regulations  as  it  may  deem  necessary  to
  effectuate the purposes of this chapter, including, but not limited  to,
  regulations:
    (a)  for  the  protection, preservation, enhancement, and perpetuation
  and use of landmarks, interior landmarks, scenic landmarks and  historic
  districts,  subject to the provisions of section 25-304 of this chapter.
  Such regulations may apply to one or more historic districts or  to  one
  or  more portions of an historic district and may vary from area to area
  in their provisions;
    (b)  relating  to  the  determination  of  the  earning  capacity   of
  improvement parcels by the commission pursuant to section 25-309 of this
  chapter;
    (c)  relating  to the procedures of the commission in carrying out its
  functions, powers and duties under this  chapter,  including  procedures
  for  the  giving of notice by the commission by mail or otherwise, where
  notice is required by this chapter; and
    (d) relating to forms to be used in proceedings before the commission.