Section 353B(3) in The Mumbai Municipal Corporation Act, 1888
(3)Notwithstanding anything contained in sub-section (1), the Commissioner may, at any time, after having recorded the reasons, in writing, direct the owner or occupier of a building, to cause such building to be examined by such Structural Engineer and to submit to the Commissioner, the Structural Stability Certificate, as required under sub-section (1), within the period not exceeding thirty days as specified by the Commissioner, in such direction.