Is the 2003 International Building Code for new construction only?

Answer 1

No.

Much of it also applies to the scope of a project for any remodel or replacement of a required system. Change of use can also put the code back in force. It may also apply for non-required work because non-required system still have to be installed to the intent of the code. Obviously, there are certain building practices that cannot be altered once the building is existing, but the code typically addresses these cases in the event of a remodel.

End the end, each remodel case is handled on a case by case basis and is often at the discretion of the local building and fire code officials through thier permit system.

Answer 2

Yes and no. Read the first chapter that tells you at what level of remodel you need to apply the code. There are some sections that have two parts, new and remodel, and there are other sections that apply to both.

Read the first part carefully or get advice from a professional.