Notice to be given to the Commissioner of intention to make additions, etc., to

1[or change of user of] a building.— Every person who shall intend—

1. (a) to make any addition to a building 2[or change of existing user]. 3[(b) to make any alteration or repairs to a building involving the removal, alteration or re-erection of any part of the building except tenantable repairs: Provided that, no lowering of plinth, foundation or floor in a building shall be permitted. Explanation.—“Tenantable repairs” in this section shall mean only,—
   • (i) providing guniting to the structural members or walls;
   • (ii) plastering, painting, pointing;
   • (iii) changing floor tiles;
   • (iv) repairing W.C., bath or washing places;
   • (v) repairing or replacing drainage pipes, taps, manholes and other fittings;
   • (vi) repairing or replacing sanitary water plumbing, or electrical fitting; and
   • (vii) replacement of roof with the same material but, shall not include,—
2. (a) change in horizontal and vertical existing dimensions of the structure;
3. (b) replacement or removal of any structural members of load bearing walls;
4. (c) lowering of plinth, foundations or floors;
5. (d) addition or extension of mezzanine floor or loft; and
6. (e) flattening of roof or repairing roof with different material.] 4[(c) * * * *] 5[(cc) to make any alteration in a building involving—
   • (i) the sub-division of any room in such building so as to convert the same into two or more separate rooms,
   • (ii) the conversion of any passage or space in such building into a room or rooms, or]
7. (d) to remove or reconstruct any portion of a building abutting on a street which stands within the regular line or such street, shall give to the Commissioner, in a form obtained for this purpose under section 344, notice of his said intention, specifying the position of the building in which such work is to be executed, 6[* *] the nature and extent of the intended work, 7[the particular part or parts, if any, of such work which is or are intended to be used for human habitation] 8[and the name of the person whom he intends to employ to supervise its execution],