Power of competent authority to require improvement to buildings unfit forhuman habitation

(1) Where the competent authority has made a declaration under section 3 in respect of any area such authority may, unless in its opinion any building in that area is not capable ata reasonable expense of being rendered fit for human habitation 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 the opinion of the authority those works will render the building fit for human habitation. (2) In addition to serving a notice under this section on the owner, the competent authority may serve a copy of the notice on any other person having an interest in the building whether as lessee, mortgagee or otherwise. (3) In determining, for the purposes of this Act, whether a building can be rendered fit for human habitation at a reasonable expense, regard shall be had to the estimated cost of the works necessary to render it so fit and the valuewhich it is estimated that the building will have when the works are completed.