Section 28-216.8.1. Work by the department

Upon receiving a precept under the
  provisions  of  section  28-216.7.2, the commissioner shall execute such
  precept, as therein directed, and may employ such labor  and  assistance
  and  furnish  such  materials  as may be necessary for that purpose. The
  commissioner or his or her designee shall  direct  the  commissioner  of
  citywide   administrative   services   or   the  department  of  housing
  preservation and development or other authorized agency to perform  work
  in accordance with the precept. Such work shall be performed by or under
  the direction of citywide administrative services in accordance with the
  provisions   of  section  4-204  of  the  administrative  code,  or  the
  department of  housing  preservation  and  development,  or  such  other
  authorized agency.