There is no enforcement other than lawsuits. The problem is that requiring this ramp is not a reasonable accommodation to most people. You basically have to w

There is no enforcement other than lawsuits. The problem is that requiring this ramp is not a reasonable accommodation to most people. You basically have to wreck the business to make it accessible. In practice the result is the building is unusable, it's going to have to be razed because someone was greedy.