law: The Delhi Municipal Corporation Act, 1957
  345. Power of Commissioner to require alteration of work.-
  (1) The Commissioner may at any time during the erection of any building or execution of any work or at any time 1[after the completion thereof, by a written notice of not less than seven days], specify any matter in respect of which such erection or execution is without or contrary to the sanction referred to in section 336 or is in contravention of any condition of such sanction or any of the provisions of this Act or any bye-laws made thereunder and require the person who give the notice under section 333 or section 334 or the owner of such building or work either-
  (a) to make such alterations as may be specified in the said notice with the object of bringing the building or work in conformity with the said sanction, condition or provisions, or
  (b) to show cause why such alterations should not be made, within a period stated in the notice. (2) If the person or the owner does not show cause as aforesaid, he shall be bound to make the alterations specified in the notice.
  (3) If the person or the owner shows cause as aforesaid, the Commissioner shall by an order either cancel the notice issued under sub-section (1) or confirm the same subject to such modifications as he thinks fit.
  1. Subs. by Act 42 of 1984, s. 5, for "within three months after the completion thereof, by a written notice" (w.e.f. 10-12-1985).
  2[345A. Power to seal unauthorised constructions.-
  (1) It shall be lawful for the Commissioner, at any time, before or after making an order of demolition under section 343 or of the stoppage of the erection of any building or execution of any work under section 343 or under section 344, to make an order directing the sealing of such erection or work or of the premises in which such erection or work is being carried on or has been completed in the manner prescribed by rules, for the purpose of carrying out the provisions of this Act, or for preventing any dispute as to the nature and extent of such erection or work.
  (2) Where any erection or work or any premises in which any erection or work is being carried on, has or have been sealed, the Commissioner may, for the purpose of demolishing such erection or work in accordance with the provisions of this Act, order such seal to be removed.
  (3) No person shall remove such seal except-
  (a) under an order made by the Commissioner under sub-section (2); or
  (b) under an order of an Appellate Tribunal or the Administrator, made in an appeal under this Act.]
  2. Ins. by s. 6, ibid. (w.e.f. 10-2-1986).