Commissioner, proceed with the said building or work in accordance with his intention as described in the notice or in any of the documents aforesaid under this Act at the time in force.

Building or work which is disapproved by the Commissioner may be proceeded with

subject to terms.— (1) If the Commissioner disapproves of any building or work of which notice has been given as aforesaid or of any portion or detail thereof, by reason that the same will contravene some provision of this Act or some bye-law made hereunder at the time in force or will be unsafe, he may, at any time within thirty days of the receipt of the notice or of plan, section, description or further

information, if any, called for under section 388, 340 or 343, as the case may be, by a written notice

intimate to the person who gave the notice first herein before in this section mentioned his said disapproval and the reason for the same, and prescribed terms subject to which the building or work may be deemed to be approved by him.

1. (2) The person who gave the notice concerning any such building or work may proceed with the same, subject to the terms prescribed as aforesaid but not otherwise at any time within one year from the date of receipt by him under sub-section (1) of the written notice in this behalf, but not so as to contravene any of the provisions of this Act or any bye-law made hereunder at the time in force.