rdbrewer over at Ace's ...

.
... nails it:

You know that old building you thought you'd rehab, maybe start a little business in with your shoestring budget? Forget it. Think about that the next time you find yourself wondering about an empty, older property that seems like it ought to be a prime location for a business. That's why it's vacant.

Yep, the ADA strikes again. Say goodbye to your public pool.

pm