The applicants sought to legalize an existing secondary suite constructed by a previous owner without a permit.
The chief building official issued a permit conditional on providing sound attenuation between the units.
The applicants disputed this requirement, arguing that Part 11 of the Building Code applied.
The respondent raised a preliminary objection regarding jurisdiction.
The Building Code Commission held that it lacked jurisdiction under s. 24(1) of the Building Code Act, 1992, because determining when the illegal unit was constructed is a mixed question of fact and law, not a dispute concerning the sufficiency of compliance with technical requirements.