Many people forget to look into zoning. There is zoning for everything. Rural areas such as farms can get away with a lot of stuff. For instance doing business from your home is zoned pretty particularly so it is important to pay attention to this. Breaking zoning laws can end up in being fined or legal action. A lawyer would be helpful for this subject but you can do some of the legwork.
You will want to talk to the county courthouse (ask for the county clerk as they will know who to talk to) about zoning issues as well as the the chamber of commerce for your cities zoning laws.
Sometimes you will be able to get all of the main powers in the area all at once. Some cities or counties do this. This puts you in front of power, water, fire, and other various organizations so that you can hash out all the issues at once.