Why Express Permits Process in Zero Days This Spring
Chicago's express permit system is hitting same-day approval for simple projects, but only certain work qualifies.
The Chicago Building Department processed three express permits with zero processing days this week — same-day approval from application to issue.
This speed comes with strict requirements. Express permits only cover specific work types: solar installations, detached garages, fences, and basic mechanical work. The trade-off for speed is limited scope.
What gets same-day approval:
- Solar systems under 25 kW with standard roof mounting
- Detached garages following standard dimensions
- Chain link fences under 8 feet
- HVAC replacements with no structural changes
What still takes weeks:
- Interior renovations requiring structural review
- Electrical service upgrades over 200 amps
- Any work in landmark districts
- ADU and coach house construction
The express permit system works because these projects follow standardized plans pre-approved by the city. No custom engineering review means no delays.
For contractors, this creates a strategic choice. Start with express-eligible work to get crews moving, then file standard permits for complex phases. It's why some contractors split projects into express and standard phases.
Check the Chicago Building Department website to verify your project qualifies before applying. The wrong permit type can add weeks to your timeline.