(1) Notwithstanding anything in this Act, on an application made by a landlord of a building in respect of which the Government shall be deemed to be the tenant, the authorised officer may, if he is satisfied-
(a) that the building is reasonably and bona fide required by the landlord for carrying out repairs, alterations or additions which cannot be carried out without the building being vacated; or
(b) that the building consists of not more than two floors and is reasonably and bona fide required by the landlord for the immediate purpose of demolishing it and such demolition is to be made for the purpose of erecting a new building on the site of the building sought to be demolished, pass an order directing the allottee to deliver possession of the building to the landlord before a specified date.
(2) No order for recovery of possession under this section shall be passed unless the landlord gives an undertaking that the building on completion of the repairs, alterations or additions or the new building on its completion will be offered to the authorised officer before the expiry of such period as may be specified by the authorised officer in this behalf for re-allotment to any person named by the authorised officer.
(3) Nothing in this section shall entitle the landlord, who has recovered possession of the building for repairs, alterations or additions or for reconstruction to convert a residential building into a non-residential building or a non-residential building into a residential building unless such conversion is permitted by the authorised officer at the time of passing an order under sub-section (1).