I think the Property Condition Disclosure has everything required to be disclosed. Beyond that I think most sellers would carry a 'don't ask, dont tell' attitude toward something like that. However, if the seller lied and said it was, when it really wasn't, then that can be a potential problem. But what proof do you really have in court unless this is all written? Either way it is highly recommended the buyer do there own research by checking at town hall if it concerns them. Even if the seller said it was permitted.. why settle for words? if you want to be sure .. you need to look up the records.