Do I need a permit for a full kitchen remodel in
O'Fallon, Illinois?

O'Fallon kitchen remodels — the key details

The single most important rule for O'Fallon kitchen permits is the three-sub-permit requirement: building, plumbing, and electrical. You cannot pull one umbrella permit and have three inspectors show up; O'Fallon's system (and the Illinois Building Code it follows) requires three separate permit applications and fee payments. The building permit covers framing, wall removal/relocation, and structural changes (IRC R602). The plumbing permit covers fixture relocation, drain lines, and venting (IRC P2722 and Chapter 42 of the IBC). The electrical permit covers new circuits, outlet spacing, and GFCI protection (IRC Chapter 54, sections E3701-E3801). You submit all three simultaneously or in sequence, but each has its own plan-review cycle and inspection checklist. Expect one consolidated fee quote from the City of O'Fallon, or three separate invoices — the permit office will clarify when you call. The reason for this split is liability and trade-specific code sections: a plumbing inspector has no authority to sign off on electrical roughing, and vice versa. Many homeowners underestimate this administrative layer and assume one permit covers everything; it does not.

A second critical detail unique to O'Fallon (and Illinois broadly) is the two small-appliance branch-circuit requirement. IRC E3702 mandates two dedicated 20-amp circuits for counter receptacles above the kitchen counter. O'Fallon inspectors are strict about this: if your electrical plan shows only one 20-amp small-appliance circuit or tries to combine it with the refrigerator circuit, you will be rejected in plan review and asked to revise. The two circuits must be separate, labeled on the panel, and protected by GFCI outlets or breakers. Additionally, every receptacle above the counter within 6 feet of a sink must be GFCI-protected (IRC E3801.4). This is non-negotiable and tripped-breaker complaints are common in kitchens with old or inadequate circuits. If you're recircuiting a kitchen to add an island or peninsula, you must account for all receptacles on the plan, including the island, and show GFCI protection. Many contractors forget to note the island in the first draft, leading to rejections.

Plumbing relocation in a kitchen almost always requires a new trap arm and vent line. If you're moving a sink from one wall to another, IRC P2722 (trap and drain) and Chapter 42 (venting) come into play. The trap must be sized correctly (usually 1.5 inch for a sink), the vent must rise vertically and tie into the main stack (or a secondary vent if the stack is too far away), and the pitch must be maintained (1/4 inch per foot toward the drain, no reverse pitch). O'Fallon's plumbing inspector will ask for a plumbing isometric or plan detail showing the old line (abandoned or capped) and the new line with all elevations and pipe sizes. If you're working in a first-floor kitchen with a basement, you'll need to show how the new vent exits above the roof or ties into the existing vent stack. If the new sink is far from the main stack (over 10 feet in some cases), you may need to install a separate vent or use a mechanical vent (studor vent), which requires approval on the plan. These details are commonly missed in initial submittals, delaying review by 1-2 weeks.

Load-bearing wall removal is the most expensive and time-consuming kitchen change. If you're opening up a wall between the kitchen and dining room, and that wall is load-bearing (carries floor or roof load), you must install a beam. IRC R602 requires engineered drawings or a pre-approved beam sizing chart for spans over 6 feet. O'Fallon does not allow a contractor to 'eyeball' a beam or use a rule-of-thumb size; you must submit a letter from a licensed structural engineer or a prescriptive beam table (like those in the IRC R602.7 or Simpson Strong-Tie manuals) showing the beam size, grade, and connection details. The cost of a structural engineer's letter is $300–$600; the cost of the beam itself (steel or engineered lumber) is $500–$2,000 depending on span. O'Fallon's plan reviewer will reject any load-bearing wall removal without this documentation. If you're unsure whether the wall is load-bearing, have a structural engineer or experienced contractor inspect the home; many kitchen remodelers cause structural damage by removing walls without proper support, leading to sagging floors and cracked drywall months later.

Finally, a range hood with exterior ductwork requires a rough ductwork inspection before drywall closes up the wall. You must show on your plan where the duct exits the exterior wall, whether it goes through the roof or through the soffit, and what type of cap or termination is used (typically a wall-mounted cap with damper for O'Fallon's climate). If the duct runs more than 10-15 feet or has multiple elbows, you may trigger a mechanical/HVAC permit as well; O'Fallon sometimes bundles this with the building permit, sometimes issues it separately. Make sure the duct is insulated if it runs through an unconditioned space (attic, etc.) to prevent condensation. The rough ductwork inspection is typically done alongside the rough electrical and plumbing inspections, but coordinate with your contractor to ensure the hood and duct are in place before drywall is hung. Missing this inspection often results in having to cut open drywall after the fact, adding cost and delay.

Three O'Fallon kitchen remodel (full) scenarios

O'Fallon's three-sub-permit system and how it affects your timeline

O'Fallon uses a three-sub-permit model inherited from the Illinois Building Code, which many homeowners find confusing. Unlike some municipalities that offer a single general contractor permit bundled with sub-trade approvals, O'Fallon requires separate applications for building (structural, framing, finishes), plumbing, and electrical — each with its own fee, its own plan-review cycle, and its own inspector. This means you will likely pay three separate permit fees (typically $150–$250 each for a kitchen remodel, depending on project valuation), you will receive three separate permit cards or numbers, and you will have three separate inspection sign-offs. Some contractors file all three simultaneously; others stagger them (building first, then plumbing and electrical). O'Fallon's online permit portal (accessible through the city website) allows electronic submission for all three, which speeds up the process compared to in-person filing at City Hall.

The practical effect is that plan review takes 3-4 weeks for a straightforward kitchen (no structural changes), and 4-6 weeks if a load-bearing wall removal or structural beam is involved. Each permit office (building, plumbing, electrical) reviews independently, so a flaw in the plumbing plan does not hold up the electrical review — but the contractor must address all three reviewers' comments before work proceeds. Inspections are scheduled separately as well: rough plumbing is typically 3-5 days after framing is complete; rough electrical follows; structural inspection of the beam (if any) happens during framing. Coordinating these three inspections is the general contractor's job, and delays in scheduling one inspection can cascade. For example, if the rough plumbing inspector finds an issue (bad pitch, missing vent), the work must be corrected before the next inspection, which pushes the drywall schedule back by a week. Plan for 8-12 weeks total from permit issuance to certificate of occupancy in a full kitchen remodel with structural work; 6-8 weeks for plumbing-only or electrical-only changes.

O'Fallon does offer some streamlining through its permit portal: you can upload plan PDFs, pay fees online, and track plan-review status electronically. Some jurisdictions (e.g., the Village of Naperville, 20 miles north) still require in-person submission and paper checks, which adds delay. O'Fallon's approach is slightly more efficient, but the three-sub-permit requirement itself is non-negotiable. When you call the City of O'Fallon Building Department to start the process, ask whether you should submit all three permits together or whether plumbing and electrical have a preferred filing sequence. Some plan reviewers want to see the building framing plan approved first (to understand the wall layout and beam placement) before they review plumbing. Clarifying this upfront saves a week.

Lead-paint disclosure and why it matters for O'Fallon pre-1978 kitchens

Any home built before 1978 in O'Fallon is presumed to contain lead-based paint. This is a federal rule (42 U.S.C. 4852d) adopted into Illinois and enforced locally by O'Fallon code. When you apply for a kitchen permit on a pre-1978 home, O'Fallon requires you to either (1) have a certified lead-paint inspector test the surfaces to be disturbed, (2) certify in writing that lead-based paint is not present (rarely defensible unless the home was fully remediated and documented), or (3) hire a certified lead abatement contractor to supervise the work. Disturbing lead-paint (which includes demolition, sanding, cutting, or drilling into painted surfaces) creates lead dust that is a health hazard, especially if children or pregnant women are present. Many homeowners skip this step thinking it's just paperwork, but O'Fallon inspectors will ask for proof of lead disclosure or abatement before issuing the building permit.

The practical cost impact is $200–$600 for a certified lead inspection (the inspector will test paint chips from surfaces you plan to disturb — cabinets, walls, trim — and issue a report). If lead is found, you have two options: (1) have a certified lead abatement contractor manage the demolition and contain the dust with negative-pressure enclosures (adds $1,000–$3,000 to the project), or (2) use standard demolition practices and hire an abatement supervisor to monitor (adds $500–$1,000). Many contractors bundle this into their estimate; others charge separately. O'Fallon requires the lead disclosure form (HUD form or state equivalent) to be signed by the homeowner and attached to the permit application. Without it, the permit application will be rejected. This is a common delay point — homeowners assume the contractor will handle it, but the contractor typically requires the homeowner to initiate and sign the disclosure. If your kitchen remodel starts with cabinet demolition in August and you haven't done the lead test by July, you will miss your timeline.

If lead is detected and you choose to hire an abatement contractor, that contractor must be licensed by the Illinois Department of Public Health and trained in EPA-certified lead-safe practices. This is a separate line item from the general contractor. O'Fallon's final inspection will include a walkthrough to ensure lead containment practices were followed and dust was properly cleaned up. Some inspectors are strict about this; others do a cursory check. Budget for lead disclosure and testing regardless, and assume 1-2 weeks for the inspection and decision. If you're selling the home later, the lead disclosure will be requested by the buyer's attorney, so having a certified record of testing and remediation (if needed) is valuable.

Common questions