(8)No order for the recovery or possession of any premises shall be made on the ground specified in clause (g) of the proviso to sub-section (1), unless the Controller is satisfied that the proposed reconstruction will not radically alter the purpose for which the premises were let or that such ramedical alteration is in the public interest, and that the plans and estimates of such reconstruction have been properly prepared and that necessary fund for the purpose are available with the landlord.