What are building codes for finished basements in New Jersey?

New Jersey is a state where the 2006 International Building Codes have been adopted. Check with your local building department to see which codes are in effect and if there are any amendments to those codes. My bet is, your jurisdiction is currently using the 2006 International Residential Code for one and two family dwellings. I am only guessing that this is a single family home. If not it may be the 2006 International Building Code. Because you are finishing a basement in an existing building, it is possible that you may fall under the 2006 International Existing Building Code. All of these options are known for sure by your local building department. Hope this helps! Terry, CBO