Section 28-105.4. Work exempt from permit

Exemptions  from  permit
  requirements of this code shall not be deemed to grant authorization for
  any work to be done in any manner in violation of the provisions of this
  code, the zoning resolution or any other law or rules  enforced  by  the
  department.    Such  exemptions  shall  not  relieve  an  owner  of  the
  obligation to comply with the requirements of or file  with  other  city
  agencies.  Unless otherwise indicated, permits shall not be required for
  the following:
    1. Emergency work, as set forth in section 28-105.4.1.
    2. Minor alterations and ordinary repairs,  as  described  in  section
  28-105.4.2.
    3.  Certain  work  performed  by  a  public  utility company or public
  utility corporation, as set forth in section 28-105.4.3.
    4. Ordinary plumbing work, as set forth in section 28-105.4.4.
    5. Permits for the installation of certain  signs,  as  set  forth  in
  section 28-105.4.5.
    6.  Other  categories  of  work  as  described  in  department  rules,
  consistent with public safety.