You'll need a permit for a bathroom remodeling project if you're going to make significant changes to the plumbing, electrical systems, or structural components of the bathroom. This may include relocating accessories or modifying load-bearing walls. Therefore, the fee you'll pay depends on the scope and value of the project budget. In Chicago, a permit is needed to make structural changes to a building.
Most remodels, tiles, doors, cabinets, and bathroom accessories can be replaced without a permit. Below, we list the cases in which it is not necessary to have a permit (source). Quite often, homeowners find it easier to get their kitchen remodeling contractor to apply for and obtain all permits related to remodeling a kitchen.