Section 27-3021. Service of orders and notices

Any order or notice issued
  pursuant to the provisions of this chapter may be served personally upon
  the person, partnership or  corporation  to  whom  or  to  which  it  is
  addressed,  or  may  be  served by mailing the same in a sealed envelope
  with postage prepaid, directed,  in  the  case  of  the  holder  of  any
  license,  to  the  address  furnished  by  such  license  holder  to the
  department of buildings as his or her business address, or  the  address
  of  the  master electrician business represented by the licensee and, in
  the case of  any  other  person,  partnership  or  corporation,  to  the
  premises  where  the  defects recited in such order are alleged to exist
  and by the posting in a conspicuous place on such premises of a copy  of
  such  notice  or  order.  The service as above described, by mailing and
  posting, shall be the equivalent of personal service.