I am going to be adding on to my house and plan to be my own GC in order to afford it. I just found out I have to get a permit from the health department. Is that going to be difficult? Already, it seems, I am going to have to get a new survey showing where the existing septic and well are. Will I need a seperate one showing the addition, or can everything go on the same survey? Can I apply for that permit before applying for the building permit?