If your business entrance is classified as Category 2, 3, or 4, you will need changes to comply with accessibility requirements. If you can use 1 of these common solutions (in order of priority), ...
plan [and] elevation of front entrance & doors : Sheet no. 12 JPEG | Zoom 7. NYDA.1960.001.00213. Stairway details -- plan [at] second floor, plan [at] first floor, section on line A-A, section thro' ...