Any landlord or tenant may file an application to the Controller for fixing the standard rent and other charges of the premises or for determining the lawful increase or decrease of such rent and other charges:-
(a) in the case of any premises which were let, or in which the cause of action for lawful increase or decrease of rent and other charges arose, before the commencement of this Act, within two years from such commencement.
(b) in the case of any premises in which the cause of action for lawful increase or decrease of rent and other charges arises after the commencement of this Act, within two years from the date on which the cause of action arises.
(c) in the case of any premises constructed on or after the commencement of this Act and for which the provisions of the Act are made applicable by virtue of sub-section (4) of section 2, 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.