Section 291(1)

(1) Where the Commissioner upon any information in his possession is satisfied that any
building is unfit for human habitation and is not capable at a reasonable expense of being
rendered so fit, he shall serve upon the owner of the building and upon any other person
having an interest in the building, whether as a lessee, mortgagee or otherwise a notice to
show cause within such time as may be specified in the notice as to why an order of
demolition of the building should not be made.