Encroachment on road right of way

[Theresa Reynolds]

I have a property under contract that has a shop/garage on it which I want to turn into a house. However, the shop extends about 4ft onto the county road. Supposedly the building is grandfathered in, however, I am curious what other problems this could cause in the future in terms of reselling and marketability. There is no zoning so the remodel part wouldn’t be an issue as I am not adding on. Is it wise to get into something like that?