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When a permit is required
Permit triggers and exempt work for Troy
New construction, additions, renovations, structural changes, fences, pools, solar panels, demolition.
- Exempt Cosmetic improvements (painting, flooring, cabinets)
- Exempt Minor non-structural repairs
- Exempt Fence maintenance (board replacement)
- Application form
- Site plans
- Construction drawings
- Building code
- 2021 IBC, 2021 IRC, 2020 NEC (Effective June 2025)
- Owner-builder
- Generally permitted for primary residence.
- Contractor requirements
- Contractors must be registered.
Application process
Application → plan check → issuance → inspection → final
- 01 Pre-consultation with the department is recommended.
- 02 Submit application (Residential, Commercial, or Limited Use) and plans to buildingzoning@troyil.us.
- 03 Review for code and zoning compliance.
- 04 Pay fees upon approval.
Source: Building & Zoning Department ↗
Fee schedule
Troy building permit fees
Payments made at City Hall
Fees change periodically. Confirm at the official fee schedule ↗ before budgeting.
Required inspections
Scheduling and sequence
- (618) 667-8734 (phone)
- Scheduling deadline
- 24-hour notice required (48 hours for Limited Use)
Typical sequence: Rough-in, Final
Frequently asked
Common questions about Troy permits
01 Do I need a building permit in Troy, IL? ▸
02 How much does a building permit cost in Troy, IL? ▸
03 How do I apply for a building permit in Troy, IL? ▸
04 What work is exempt from building permits in Troy, IL? ▸
05 How do I schedule a building inspection in Troy, IL? ▸
Educational reference. Permit rules and fees change — confirm current requirements directly with Building & Zoning Department before applying. Jaspector is not legal advice.