Cook County Commercial Permit Fees & Rules
Official municipal fee schedule estimator, mandatory contractor bond requirements, and plan review SLAs for commercial construction in Cook County, Illinois.
- Enforcing Department
- Cook County Dept of Building and Zoning
- Governing Ordinance
- Cook County Building Code Ord 102-120
- Plan Review SLA
- 15 - 22 Business Days
- Surety Bond Min
- $20,000
Cook County Commercial Permit Fee Estimator
Tier Valuation Formula: $1,665 base fee + $3.80 per $1,000 above $250,000 valuation.
Mandatory Contractor Prerequisites & Submittal Checklist
Cook County AHJ RequirementsContractor Surety License Bond
Cook County requires an active $20,000 Illinois Contractor License Bond on file prior to plan submittal.
Commercial COI Liability ($1M+)
Minimum $1.0M General Liability COI naming Cook County Building Dept as Certificate Holder.
🏛️ Authority Having Jurisdiction (AHJ)
Verified Government Contact📋 Required Commercial Submittal Checklist
To prevent plan check rejections in Cook County, commercial permit applications must include the following stamped documentation:
- ✓ Architectural Blueprints & Site Plan (Stamped by Illinois Registered Architect)
- ✓ Structural Engineering Calculations & Foundation Details (Stamped PE)
- ✓ MEP Single-Line Electrical & Mechanical Load Calculations
- ✓ Proof of $20,000 Illinois Contractor License Bond
❓ Frequently Asked Questions (Cook County)
Ordinance VerifiedWhat model building code does Cook County enforce in 2026? ▼
Cook County enforces the 42-inch foundation frost-line depth requirement. in accordance with Cook County Building Code Ord 102-120.
How long does commercial plan review take in Cook County? ▼
Commercial plan review in Cook County typically takes 15 - 22 Business Days depending on project valuation and submittal completeness.
Is a contractor surety bond required for permits in Cook County? ▼
Yes. Cook County requires a mandatory $20,000 Illinois Contractor License Bond prior to permit issuance.
Cook County Dept of Building and Zoning
69 W Washington St, Chicago, IL 60602