It is the township, NOT a realtor that can answer that question definitively. Though the listing agent should check important details like this prior to listing, it is not always done. Sometimes agents rely on what the seller tells them. Yes, do ask the agent, and if you have a buyer's agent - and I recommend that you do - ask her to research as well. But the very best thing for you to do is to also do your own due diligence to be sure you are buying what you think you are. It would be a huge bummer, and a big waste of time & money in a very attractive buyer's market to find out late in the process that you've got a problem.
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