The apartments in my town are backward IMO, they allow a cat or a dog under 20 pounds but no caged pets whatsoever. I could see them being hesitant about escapees, but really... a dog could be urinating and pooping all over the carpet, chewing the walls, barking and disturbing the neighbors, getting hair everywhere, leaving poop out in the grass. In comparison to that, what harm would say a toad in a ten gallon do?
Good luck with your search!