Section 489(1) in The Mumbai Municipal Corporation Act, 1888
(1)When any requisition or order is made, by written notice by the Commissioner or by any municipal officer empowered under section 68 in this behalf, under any section, sub-section or clauses of this Act mentioned in sub-section (2), a reasonable period shall be prescribed in such notice for carrying such requisition or order into effect, and if, within the period so prescribed, such requisition or order or any portion of such requisition or order is not complied with the Commissioner may take such measures or cause such work to be executed or such thing to be done as shall, in his opinion be necessary for giving due effect to the requisition or order so made; and, unless it is in this Act otherwise expressly provided, the expenses thereof shall be paid by the person or by any one of the persons to whom such requisition or order was addressed.