law: Delhi Rent Control Act, 1958 
  36. Powers of Controller. -
  (1) the Controller may-
  (a) Transfer any
  
  proceeding pending before him for disposal to any additional Controller, or
  (b) Withdraw any
  
  proceeding pending before any additional Controller any dispose it of him or
  
  transfer the proceeding for disposal to any other additional Controller.
  (2) The Controller shall have the same powers
  
  as are vested in a civil court under the Code of Civil Procedure, 1908 (5 of
  
  1908), when trying a suit, in respect of the following matters, namely:-
  (a) Summoning and
  
  enforcing the attendance of any person and examining him on oath;
  (b) Requiring the
  
  discovery and production of documents;
  (c) Issuing
  
  commissions for the examination of witnesses;
  (d) Any other matter
  
  which may be prescribed, And any proceeding before the Controller shall be
  
  deemed to be a judicial proceeding within the meaning of section 193 and
  
  section 228 of the Indian Penal Code (45 of 1860), and the Controller shall be
  
  deemed to be a civil court within the meaning of section 480 and section 482 of
  
  the Code of Criminal Procedure, 1898 (5 of 1898).
  (3) For the purposes of holding any inquiry or
  
  discharging any duty under this Act, the Controller may,-
  (a) After giving not
  
  less than twenty-four hours’ notice in writing, enter and inspect or authorize
  
  any officer subordinate to him to enter and inspect any premises at any time
  
  between sunrise and sunset; or
  (b) By written order,
  
  require any person to produce for his inspection all such accounts, book or other
  
  documents relevant to the inquiry at such time and at such place as may be
  
  specified in the order.
  (4) The Controller may, if he thinks fit,
  
  appoint one or more person having special knowledge of the matter under
  
  consideration as an assessor or assessors to advise him in the proceeding
  
  before him.