for example, a wheelchair accesible bathroom needs to be at least 5 feet square on a side and the door has to swing out.
Figure 28 You don't always have the space and then you have to redo plumbing, add the reinforcing for grab bars... the list is endless and daunting, and I have complete sympathy for a small business which doesn't have the money:
http://www.access-board.gov/adaag/html/adaag.htmAs an architect I've been dealing with ADA since it went into effect in 1993. It's a great thing for civil rights but also a challenge.