Definitions. . . . (a) 'building ' means any building or part of a building let for any purpose whether being actually used for that purpose or not, including any land, godowns, outhouses, or furniture let therewith but does not include a room in a hotel, hostel or 175 boarding house; xxx xxx xxx (d) 'non residential building" means a building being used solely for the purpose of business or trade: Provided that residence in a building only for the purpose of guarding it shall not be deemed to convert a "non residential ' building ' to a 'residential building": xxx xxx xxx (g) 'residential building" means any building which is not a non residential building; (h) 'scheduled building" means a residential building which is being used by a person engaged in one or more of the professions specified in the Schedule to this act, partly for his business and partly for his residence; xxx xxx xxx 13.