Section 400(4) in Kolkata Municipal Corporation Act, 1980
(4)Where an appeal is preferred under Sub-section (3) against an order made under sub-section (1), the Municipal Building Tribunal may stay the enforcement of the order on such terms, if any and for such period, as it may think fit:Provide that where the erection of any building or the execution of any work has not been completed at the time of the order made under sub-section (1), no order staying the enforcement of the order made under that subsection shall be made by the Municipal Building Tribunal unless a surety, sufficient in the opinion of the said Tribunal, has been given by the appellant for not proceeding with such erection or work pending the disposal of the appeal.