191. (1) Whenever the appropriate authority considers it expedient to define general line of buildings on each or either side of any existing or proposed public street, it shall give public notice of its intention to do so.
(2) Every such notice shall specify a period within which objections will be received.
(3) The appropriate authority shall consider all objections received within the specified period and may then pass a resolution defining the said line, and the line so defined shall be called [the regular line of the street] ;
Provided that the general line so defined shall conform to the requirements of any rule made in this behalf.
(4) Thereafter it shall not be lawful for any person to erect, reerect or alter a building or part of a building so as to project beyond the regular line of the street, unless he is authorized to do so by sanction granted under section 165 or by a permission in writing and the appropriate authority is hereby empowered to grant such permission under this section.
(5) Any owner of land who is prevented by the provisions of this section from erecting, re-erecting or altering any building on any land may require the appropriate authority to make compensation for any damage which he may sustain by reason of such prevention, and upon the payment of compensation in respect of any land situated within the regular line of the street such land shall vest in the appropriate authority.
(6) The appropriate authority may, by notice, require the alteration or demolition of any building or part of a building erected, reerected ro altered in contravention of sub-section (4).