Section 304(3) in The Maharashtra Municipal Corporations Act, 1949
(3)If no such offer as is mentioned in sub-section (1) is made before the expiration of the said period, the owner of the building shall carry out the demolition provided for by the order before the expiration of six weeks from the last day of that period, or, if the building, or such part thereof as is required to be vacated, is not vacated until after that day, before the expiration of six weeks from the day on which it is vacated, or, in either case, before the expiration of such longer period as in the circumstances the Commissioner deems reasonable, and if the demolition is not so carried out the Commissioner shall take measures to carry out the demolition and sell the materials rendered available thereby.