Georgia has some mandatory construction codes that people have to follow for any structure built in Georgia. These are mandatory construction codes, whether local governments choose to enforce the codes of not. Each of the separate codes usually has a base code and a set of Georgia amendments to that base code. Mandatory Construction Codes In Georgia The following are the mandatory construction codes all builders must follow for any structure that is built in Georgia: International Building Code International Residential Code for One- and Two-Family Dwellings International Fire Code International Plumbing Code International Mechanical Code International Fuel Gas Code