It’s easy to get swept up in the excitement of a home project, but before starting any construction, it’s imperative to determine if you need a permit for any of the work. Failing to obtain the proper permissions can result in fines, project delays, or even the dire requirement to undo the completed work.

Here, our panel of professional contractors explain how to know if your project requires a permit, and reveal 17 common projects you need permission for. This will help ensure your work is compliant with vital building codes and avoid expensive renovation mistakes.