City Building Permits

Mascoutah, IL - 2026 Building Permit Guide

How to apply for a building permit in Mascoutah, Illinois. Permit authority, application steps, fees, and inspection requirements.

Illinois St. Clair County Updated March 2026

Permit Authority

Incorporated City of Mascoutah.

Department
Community Development Department
Address
3 West Main Street, Mascoutah, IL 62258
Phone
(618) 566-2964 (Ext. 107)

Online Permit Portal

Platform: PDF forms • Account required: No • Submission: In-person only

Application Process

  1. Download application from city website.
  2. Submit completed application and plans to Utility Billing Office.
  3. Plans reviewed (1 week for residential, 3 weeks for commercial).
  4. Pay fees and collect permit.

Typical processing time: 1-3 weeks

Source: Community Development Department

General Requirements

New construction, additions, fences, signs, structural work.

Required Documents

  • Application
  • Architectural seals for commercial/multi-family
Building code
2021 IBC, 2021 IRC, 2021 IMC, 2021 IFC, Illinois Plumbing Code
Owner-builder
Homeowners can do own roofing/plumbing on primary residence.
Contractor requirements
Contractors must register ($25/year).

Fees

Minimum permit fee
$100.00
Permit fee formula
Valuation-based ($75 base + $12-$15 per $1,000 value)
Reinspection fee
Double fee for working without permit
Penalty (no permit)
Double fee for building without permit
Payment note
Utility Billing Office handles payments

Work That Does NOT Require a Permit

  • One-story detached accessory structures (sheds) under 200 square feet
  • Minor cosmetic repairs

Important: Contact Community Development Department to confirm exempt work classification before proceeding.

Inspections

How to Schedule

  • (618) 566-2964 (phone)

Typical inspection sequence: Typical sequence: Footing, Framing, Rough, Final.

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Community Development Department before applying.

Frequently Asked Questions

Mascoutah Building Permit FAQ

Do I need a building permit in Mascoutah, IL?
New construction, additions, fences, signs, structural work.
How much does a building permit cost in Mascoutah, IL?
The minimum permit fee is $100.00. Fees are calculated as: Valuation-based ($75 base + $12-$15 per $1,000 value).
How do I apply for a building permit in Mascoutah, IL?
1. Download application from city website. 2. Submit completed application and plans to Utility Billing Office. 3. Plans reviewed (1 week for residential, 3 weeks for commercial). 4. Pay fees and collect permit.
How long does it take to get a building permit in Mascoutah, IL?
Typical processing time is 1-3 weeks.
What work is exempt from building permits in Mascoutah, IL?
The following work is generally exempt: One-story detached accessory structures (sheds) under 200 square feet; Minor cosmetic repairs. Note: Contact Community Development Department to confirm exempt work classification before proceeding.
How do I schedule a building inspection in Mascoutah, IL?
Inspections can be scheduled via: (618) 566-2964.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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