They are in charge of Building Code enforcement in GA and can also offer interpretations. They are charged with protecting GA citizens from fraud. Most developers are sensitive to the satisfaction of the home owners. They may exert some pressure where needed. Just remember, these folks ultimate goal is to sell advertising.
Some folks are just good at making money by helping people.
Sometimes this is enough to finally get their attention. You are not required to have an attorney and the Clerk of the Court can help with the procedures. Pick your attorney carefully because I'm here to tell ya that the other side has picked theirs very carefully. Attorneys should have experience in this type of litigation to be effective. You don't have to be a victim.