The Ontario Building Code | Group F, Division 1, 1 Storey
188.8.131.52. Group F, Division 1, 1 Storey
(1) A building classified as Group F, Division 1 is permitted to be of combustible constructionor noncombustible construction used singly or in combination provided,
(a) it is not more than 1 storey in building height, and
(b) it has a building area not more than 800 m2.