N.J. Stat. Ann. § 34:6-124

Before any such license is granted, an inspection of the dwelling, tenement, room, or building sought to be licensed, shall be made by the commissioner, factory inspector or investigator. If the commissioner or such inspectors or investigators ascertain that such dwelling, tenement, room, or building is in a clean and proper sanitary condition, and that the goods specified in the application may be manufactured, altered, repaired, finished or distributed therein under clean and healthful conditions, the commissioner shall grant the license.