law: Delhi Rent Control Act, 1958 
  12. Limitation for application for fixation of
  
  standard rent. -
  Any landlord or tenant may file an application
  
  to the Controller for fixing the standard rent of the premises or for
  
  determining the lawful increase of such rent,-
  (a) In the case of any premises which were
  
  let, or in which the cause of action for lawful increase of rent arose, before
  
  the commencement of this Act, within two years from such commencement;
  (b) In the case of any premises let after the
  
  commencement of this Act [but before the commencement of the Delhi Rent Control
  
  (Amendment) Act, 1988],-
  ( i )
  
  Where the application is made by the landlord, within two years from the date
  
  on which the premises 
  were let to the tenant
  
  against whom the application is made;
  (ii) Where the
  
  application is made by the tenant, within two years from the date on which the
  
  premises were let to that tenant; [(Note: Clause (d) has been inserted by Act
  
  57 of 1988, sec.7. As a result of this insertion the word "and" of
  
  the end of sub-clause (ii) of clause (b) ought to have been omitted and added
  
  at the end of clause (c), which has not been done by Act 57 of 1988. The irregularity
  
  has set right. (Ed.))and]
  (c) In the case of any premises in which the
  
  cause of action of lawful increase of rent arises after the commencement of
  
  this Act, within two years from the date on which the cause of action arises,
  
  [(Note: Clause (d) has been inserted by Act 57 of 1988, sec.7. As a result of
  
  this insertion the word "and" of the end of sub-clause (ii) of clause
  
  (b) ought to have been omitted and added at the end of clause (c), which has
  
  not been done by Act 57 of 1988. The irregularity has set right. (Ed.)) and]
  [(d) (Note: Ins. by Act 57 of 1988, sec.7 (w.e.f . 1-12-1988 ) In the case of any
  
  premises referred to in clause © of sub-section (2) of section 6, within two
  
  years from the date of such application;]
  Provided that the Controller may entertain the
  
  application after the expiry of the said period of two years, if he is
  
  satisfied that the applicant was prevented by sufficient cause from filing the
  
  application in time.