Most significant home renovations in Chicago require a building permit from the Department of Buildings, and the permit must generally be in place before structural or systems work begins. The dividing line is the scope of your project: purely cosmetic work like painting or flooring replacement usually does not need a permit, while kitchen and bathroom remodels that move walls, relocate plumbing, add electrical circuits, or alter HVAC do. This guide is specific to the City of Chicago — not suburban municipalities — and offers general guidance rather than a substitute for advice from the Department of Buildings or a licensed professional.
Does Your Project Need a Permit? A Decision Framework
Start by asking two questions about your planned work. First, are you changing structure or systems — moving walls, relocating plumbing lines, running new electrical circuits, or modifying HVAC? Second, is the work purely cosmetic or a like-for-like replacement? The City of Chicago's permit-exemption guidance defines nonstructural "repair" as the reconstruction, replacement, or renewal of any part of an existing building for maintenance or to correct damage, and work outside that definition is far more likely to need a permit.
Chicago remodeling contractors consistently draw the boundary the same way. Assembly Squad Remodeling, in a March 2026 guide authored by Viktor Aharon, states that permits are generally not required for cosmetic-only work like painting, flooring replacement, or swapping cabinetry without touching plumbing or electrical, but that most kitchen and bathroom renovations require permits when the work involves structural changes, plumbing relocation, new electrical circuits, HVAC modifications, or significant fixture replacement. Aharon also notes that Chicago follows the 2021 International Existing Building Code with local amendments, and that permits must be active before any structural or systems work begins.
A permit-fee reference site for Chicago adds a useful practical confirmation: the city's 2026 permit records show non-structural kitchen and bath remodels filed as Express permits, with fixture replacement and new wiring on the same permit. So if your remodel keeps walls and major systems in place, you are likely looking at a faster path; if it does not, expect full plan review.
Navigating Chicago's Permit Programs: Express vs. Standard Plan Review
Chicago offers different application paths depending on project complexity. The Department of Buildings describes its Standard Plan Review Permit Program as the main permitting process for building permit applications that require architectural plans. That is the route for work involving structural modifications — anything where walls move, load-bearing elements change, or engineered drawings are needed. A general permit-industry guide likewise notes that any project involving constructing, adding to, or altering an existing building requires a permit in Chicago, with permits certifying that intended work adheres to the city's laws and codes.
Non-structural remodels, by contrast, may qualify for the Express Permit Program, an expedited application process for projects without structural changes or extensive system alterations. As the permit-fee reference notes, non-structural kitchen and bath remodels in Chicago are actually filed this way in the city's own permit records. Chicago now requires electronic permit submissions through the Department of Buildings' online portal, and the completeness of your application matters: Assembly Squad cautions that missing any required document restarts the review clock. Because permit costs and timelines are project-dependent, they are best confirmed with the Department of Buildings for your specific scope.
