3. (1) Where the Competent Authority upon information received or otherwise in its possession is satisfied as respects any area that a majority of the buildings in that area are -
(a) by reason of dilapidation, over-crowding, faulty arrangement or design of such buildings, narrowness or faulty arrangement of streets, lack of ventilation, light or sanitation facilities, or any combination of these factors, detrimental to safety, health or morals of the inhabitants in that area ; or
(b) otherwise in any respect unfit for human habitation ; it may, by notification in the official Gazette, declare such area to be a slum area.
(2) In determining whether a building is unfit for human habitation, regard shall be had to the following matters, that is to say-
(a) extent of necessary repairs ;
(b) stability ;
(c) extent of dampness ;
(d) availability of natural light and air ;
(e) water-supply ;
(f) arrangements for privies, drainage and sanitation ;
(g) facilities for storage, preparation and cooking of food and for the disposal of waste matter and water ;
and the building shall be deemed to be unfit as aforesaid if it is so far defective in one or more of the aforesaid matters that it is not reasonably suitable for occupation in that condition.