A school that is constructed before July 24, 2002, shall be deemed to be in compliance with NAC 444.568 to 444.56862, inclusive, if the use of the space in the school is not changed or any deficiency in the school does not constitute a substantial or an immediate threat to the health or safety of the general public.
Nev. Admin. Code § 444.5682
NRS 439.200, 444.335