(1) If, for any reason, it shall appear to the municipal council that any building or any room in a building intended for or used as a dwelling is unfit for human habitation, the municipal council shall give to the owner or occupier of such building notice in writing, stating such reason, and signifying its intention to prohibit the further use of the building or room, as the case may be, as a dwelling, and shall in such notice call upon the owner or occupier aforesaid to state in writing any objection thereto within thirty days after the receipt of such notice; and if no objection is raised by such owner or occupier within such period as aforesaid, or if any objection which is raised by such owner or occupier within such period appears to the standing committee invalid or insufficient, the municipal council may by an order in writing prohibit the further use of such building or room as a dwelling.

(2) When any such prohibition as aforesaid has been made, the Municipal Commissioner or Chief Officer shall cause notice of such prohibition to be affixed to, and the letters "U.H.H." to be painted on the door or some conspicuous part of such building or room, as the case may be; and no owner or occupier of such building or room shall use or suffer the same to be used for human habitation until the Municipal Commissioner or Chief Officer certifies in writing that the building or room, as the case may be, has been rendered fit for human habitation.

(3) The municipal council may further at its discretion serve upon the owner of the building a notice requiring him within such time not being less than thirty days as may be specified in the notice to execute the works of improvement specified therein and stating that in its opinion those works will render the building fit for human habitation. In addition to serving a notice under this section on the owner, the municipal council may serve a copy of the notice on any other person having an interest in the building whether as a lessee, mortgagee or otherwise.

(4) In determining whether a building can be rendered fit for human habitation at a reasonable expense regard shall be had to the estimated cost of the work necessary to render it so fit and the value which it is estimated that the building will have when the works are completed.