Chicago Deck Permits 2026

Chicago deck permit fees, plan review, and required inspections for 2026.

Chicago Deck permit basics

  • Building department: City of Chicago Department of Buildings
  • Department URL: https://www.chicago.gov/city/en/depts/bldgs.html
  • Permit fee typical: $100 - $500 permit fee
  • Plan review + approval: 7-21 business days
  • Inspections required: 2-3 inspections (footing, framing, final)

Chicago Deck common issues

Footing depth (frost line dependent), railing height (36" residential / 42" commercial), guard spacing (4" max).

Chicago-specific permitting context

Chicago requires licensed Self-Certifying Professional (architect/engineer) for many alterations. Plumbing requires Chicago-specific master plumber license separate from Illinois state license.

Climate factors: Severe winters with deep frost lines (42 inch) for foundations; lake-effect snow; freeze-thaw cycles harsh on masonry

Illinois licensing for Deck contractors

Illinois Department of Financial and Professional Regulation (IDFPR) - required: Varies by trade (plumbing $300, roofing $125). Board: https://www.idfpr.illinois.gov.

Mechanics lien deadline in Illinois: 4 months from last work (residential); 2 years to file suit. Preliminary notice: 60-day notice required from subcontractors on owner-occupied residential.

Chicago Deck sales tax

Illinois sales tax: 6.25% + local (~8.8% combined avg). Contractor pays Use Tax on materials. Real property labor exempt. Sale of TPP to customer is taxable retail sale.

Verify with the Illinois Department of Revenue.

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Related Chicago resources