The Hidden Costs of Unpermitted Construction
Discover the true financial and legal dangers of unpermitted work, from retroactive fines...
Read GuideCounty Guide · Verified 2026
Check local building codes, estimate your municipal fees, and review inspection requirements for 2026.
Deck Construction · Kankakee County, Illinois
In Illinois, a Deck Construction requires a building permit.
The county's Building Division, part of the Planning Department, processes building permit applications and contractor registration renewals through its online Building Division Portal, requiring a one-time personal account for applicants to submit permits, check application status, and upload required documentation. The City of Kankakee, the county seat, separately adopted the 2018 edition of the International Residential Code by ordinance, administered through its own Building and Code Enforcement Department rather than the county's. Plans are reviewed under the Kankakee County Planning Department, Building Division (unin code (IRC Kankakee County Buil); apply through Kankakee County Planning Commn before work begins.
Source: Kankakee County Planning Department, Building Division (unin, IRC Kankakee County Buil · County-specific · 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).
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.
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 Kankakee County. We only publish fees confirmed by real homeowners — none have been reported here yet.
Confirm the current fee directly with Kankakee County Planning Commn ((815) 937-2940). If you have paid for a permit here, you can add it here to help others.
Office: Kankakee County Planning Commn
Address: 189 E Court St #1, Kankakee, IL 60901, USA
Phone: (815) 937-2940
Source: official Kankakee County government records. Hours and procedures can change — call ahead to confirm.
In Kankakee 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 Kankakee 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: a few days to several weeks, depending on current workload and the season. Contact Kankakee County Planning Commn for a current estimate.
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 Kankakee County does not publish a single fixed figure. Confirm the exact fee with the local building department before applying.
Processing time in Kankakee County varies by season and current application volume at the building department; contact Kankakee County Planning Commn for a current estimate.
You can apply through the Kankakee County Planning Commn or online via the county permit portal. For questions, call (815) 937-2940.
Did you recently pay for a permit here? Anonymously share the fee to help our database stay accurate.
Discover the true financial and legal dangers of unpermitted work, from retroactive fines...
Read GuideLearn how to accurately estimate your home remodeling budget, factoring in hidden costs...
Read GuideEverything you need to know about structural safety, legal compliance, and avoiding fines.
Read GuidePopular tools and materials homeowners use for a deck construction project:
As an Amazon Associate, we earn from qualifying purchases.
Planning another home improvement project? Check the requirements and fees for:
Building near the county line? Check requirements for neighboring areas: