7 Critical Mistakes Homeowners Make During the Permitting Process
Starting work before the permit is issued can lead to double fees and stop-work orders.
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Deck Construction · Madison County, Illinois
In Illinois, there is no single statewide rule for a Deck Construction; whether you need a permit is decided locally in Madison County.
There is no single statewide building code, so the rule is set by your local jurisdiction; most still require a permit for any deck attached to the house or more than 30 inches above grade. Because Illinois leaves this to local jurisdictions, the reliable answer comes from Building Zoning & Environmntl. Zoning setbacks apply either way.
Source: Local · Verified 2026 by StateDataIndex
Building a deck typically requires a permit if it is attached to the house, over 30 inches off the ground, or exceeds a certain square footage (often 200 sq ft).
With a population of around 264,238 residents, Madison County generally runs a more streamlined permitting process than major urban hubs.
Because of severe winter weather in Illinois, any exterior structures or footings must be set below the local frost line to prevent shifting, as mandated by the Illinois Building Code.
For Madison County residents, we highly recommend reviewing your neighborhood HOA covenants before paying any municipal fees. Often, homeowners associations maintain stricter rules regarding materials and dimensions for your Deck Construction than the county itself.
Illinois zoning is highly localized. The Chicago metropolitan area has exceptionally complex and strict local ordinances compared to downstate rural counties. Fortunately, Illinois maintains relatively builder-friendly regulations, keeping base permit fees competitive.
Permit fees vary by jurisdiction and by your project's valuation, so there is no single fixed figure for Madison County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Building Zoning & Environmntl ((618) 692-6200). If you have paid for a permit here, you can add it here to help others.
Office: Building Zoning & Environmntl
Address: 157 N Main St #154, Edwardsville, IL 62025, USA
Phone: (618) 692-6200
Source: official Madison County government records. Hours and procedures can change — call ahead to confirm.
In Madison County, you or your contractor typically submit blueprints and a property survey to the local building department. Call ahead to confirm hours and accepted payment methods.
When applying for a Deck Construction permit, you or your contractor will generally need to submit the following documentation for the city's review:
Key code points for a Deck Construction in Madison County: Decks higher than 30 inches above grade legally require guardrails (typically 36 inches high), and stairs with 4 or more risers require a handrail.
Typical processing time for a jurisdiction of this size: 2 to 4 weeks.
Building without authorization is considered a code violation. The local government can issue a Stop Work Order, forcing you to halt construction immediately. You may be subject to retroactive permit fees (often double the original cost), daily fines, or even a mandate to tear down the unpermitted work at your own expense.
Yes. Illinois generally allows property owners to act as their own general contractor under an Owner-Builder exemption. If you take this route, you assume full legal and financial liability and must ensure all work complies with the Illinois Building Code.
Permit fees vary by jurisdiction and by your project's valuation, so Madison County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Based on the size of Madison County, the typical processing time is 2 to 4 weeks. Times vary with the season and the building department application volume.
You can apply through the Building Zoning & Environmntl. For questions, call (618) 692-6200.
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Starting work before the permit is issued can lead to double fees and stop-work orders.
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