How to approach non-permitted editions?

[Derrick Redd]

I just got one of my first leads off of a bandit sign I placed on a tree in the entrance of a grocery store (for other new investors who use bandit signs). They called and did not seem too motivated because they said, "I'm just calling for sh!ts and giggles to see what I can get for the property". But since i'm new to wholesaling I want to pursue the lead for the experience. 

Anyways, I started asking him questions about the property and he tells me how there is a large edition to the home that in not permitted. How do I address this situation? Does that stop me from doing a deal or does that mean that it makes it even more of an interesting deal? The home is in a very expensive area, so I do not want to miss a potential opportunity if one is there. 

Thanks for your help!