Do I need a permit for a full bathroom remodel in
Edwardsville, Illinois?

Edwardsville full bathroom remodel permits — the key details

Edwardsville Building Department requires a building permit for any full bathroom remodel that involves fixture relocation, new electrical circuits, ventilation changes, or wall modifications. The threshold is stricter than some downstate Illinois towns: even moving a toilet from one wall to an adjacent wall (same room) requires a plumbing permit and rough-in inspection. The code citation is Illinois Building Code Chapter 42 (Plumbing), which adopts IRC P2706 (drainage fittings and trap arms). If your toilet drain arm must run more than 6 feet from the trap to the stack, you need a vent loop, and the Building Department's plan reviewers will flag this if your drawings don't show it. A full gut renovation that removes and replaces all fixtures (toilet, sink, shower/tub) in their existing locations still requires a permit because the plumbing connections are being disturbed. Conversely, if you're replacing a toilet bowl with an identical model in the same flange, a new faucet on the same supply lines, or re-tiling around an in-place tub with no drain modification, no permit is needed — these are cosmetic only.

Electrical requirements in Edwardsville are enforced per Illinois Electrical Code (which adopts NEC with amendments). Every bathroom must have GFCI protection on all receptacles within 6 feet of the sink (NEC 210.52(D)), and Edwardsville's plan review requires you to label every outlet on the electrical schematic with 'GFCI' so inspectors know you understand the rule. If your remodel adds a new circuit (e.g., a dedicated 20-amp circuit for heated floor mats or a new vanity light on its own breaker), you must submit an electrical one-line diagram showing the new breaker in the main panel, wire gauge, and breaker amperage. AFCI protection is required on bathroom lighting circuits in Edwardsville (per 2021 IBC M3601.4 adopted locally), though some reviewers conflate this with GFCI — clarify on your plan by noting 'AFCI-protected lighting circuit' if applicable. If you're adding a heated towel rack, it counts as a new load; if you're relocating an existing outlet, you still need to show the new location on the plan. Many homeowners skip the electrical permit thinking plumbing is the only concern; this is a common rejection reason in Edwardsville. A permit application that shows 'new bathroom wiring' without specific breaker and GFCI labeling will be returned for revision.

Ventilation (exhaust fans) are a major trigger for permits in Edwardsville because the code has specific local enforcement on duct termination. IRC M1505.1 requires a minimum 50 CFM exhaust fan (80 CFM if the bathroom is larger than 100 sq ft), and the duct must be rigid or semi-rigid, not flexible (which traps moisture and fails inspection). Edwardsville Building Department requires the duct termination point to be shown on the plan — whether it vents through the roof, soffit, or gable wall — and the actual vent hood must be labeled on the schematic with CFM rating. Many homeowners install a new fan but don't submit a plan showing where the ductwork ends; this causes delays when the inspector visits and finds a flex duct venting into an attic or soffit without a damper. If your bathroom currently has no exhaust fan and your remodel adds one, that's a permit trigger even if you're not moving fixtures. If the existing fan is being replaced with an identical model in the same location, some reviewers grant an exemption, but you must request it in writing with the old fan's CFM spec — don't assume.

Waterproofing for showers and tubs is a frequent rejection point in Edwardsville. If your remodel includes a tub-to-shower conversion or a new shower enclosure, you must specify the waterproofing system on the plan: either cement board + liquid membrane, or a prefabricated waterproofing surround panel (Kerdi, Durock Wonderboard, etc.). The code (IRC R702.4.2) requires a pan beneath the shower and a water-resistant backing on walls. Edwardsville reviewers want to see this documented so they know you're not using drywall behind tile (which fails within 2-3 years). If you're moving a shower from one corner to another, the plan should show the new waterproofing area. Tub surrounds must have a minimum 1/4-inch slope on the pan floor; if you're using a fiberglass pan, note that on the plan. Tile-only updates (no pan change) don't always require a permit, but any structural change to the tub or shower base does.

The permit application process in Edwardsville begins online via the city's permit portal (found on the City of Edwardsville website under 'Permits' or 'Building Services'). You'll upload a site plan, floor plan showing fixture locations, electrical schematic (if adding circuits), and plumbing schematic (if moving drains/vents). The Building Department typically returns comments within 2-5 weeks; revisions are common, so budget time and multiple resubmissions. Once approved, you'll receive a permit number and a final copy to post on-site during work. Inspections are scheduled as you progress: rough plumbing (before drywall), rough electrical (before drywall), and final (after all finishes). A drywall inspection is sometimes required if walls are being moved, but skipped if you're only replacing fixtures. Plan to have your contractor (or you, if owner-builder) call the Building Department to schedule inspections at each stage — they don't happen automatically. The entire process from application to final approval typically takes 4-8 weeks, depending on review complexity and revision cycles.

Three Edwardsville bathroom remodel (full) scenarios

Edwardsville frost depth and drainage: why it matters for bathroom remodels

Edwardsville is in southern Illinois, where frost depth is 36 inches (compared to 42 inches in Chicago). This affects bathroom remodels if your home has a crawlspace or basement and the project involves new drain routing below grade. The frost depth rule (IRC R403.1) governs how deep foundation footings and below-grade pipes must sit to avoid frost heave in winter. For a typical full bathroom remodel with relocated drains, if the new drain line is being run to an exterior wall and out to the main sewer, the pipe must sit below 36 inches in Edwardsville. This is rarely a problem for interior-only reconfigurations, but if your bathroom is on a corner and new drainage slopes toward the exterior, the Building Department's plan reviewer may request a soil excavation note or certification that the new drain will be below frost depth. In practice, most new interior drains are routed inside the home toward a central stack, so frost depth doesn't come into play. However, if your home is built on a slab-on-grade (less common in Edwardsville but present in some 1990s-2000s subdivisions), frost depth is moot because there's no crawlspace. Conversely, if you have an older basement and the drain must exit through the foundation wall, you'll need to verify the penetration is properly sealed and the pipe slope meets code (1/4 inch per foot minimum). Edwardsville Building Department doesn't require a frost-depth note on every permit, but savvy contractors include it to avoid reviewer delays.

Soil conditions in Edwardsville are primarily glacial till and loess (wind-blown silt), which have good drainage properties but can retain moisture in tight clay layers. This doesn't directly affect your bathroom permit, but it matters for grading and sump-pump discharge if your remodel involves any exterior work (e.g., new downspout routing). For interior remodels, the building department's concern is water infiltration into the bathroom itself, not site drainage. That said, if your bathroom sits below-grade (basement bathroom remodel) in Edwardsville's loess-heavy western portion, you may encounter moisture issues during demolition; the Building Department will expect you to address any existing water intrusion before closing walls back up. This sometimes requires a sump pump retrofit, which needs its own permit and inspection. Plan ahead if you're doing a basement bathroom remodel — budget an extra 1-2 weeks for any moisture remediation.

The Illinois Building Code that Edwardsville enforces (2024 cycle based on 2021 IBC) includes specific amendments for radon risk. Parts of Edwardsville, particularly west and north of downtown, are in EPA radon Zone 1 (highest potential). If your bathroom remodel disturbs the foundation or adds new penetrations, the Building Department may request radon-resistant construction features (sealing cracks, installing sub-slab depressurization). This is rare for cosmetic remodels, but if your scope includes foundation work, ask the Building Department during pre-permit discussion whether radon mitigation is required. It's not typically a permit-blocker, but it can add $1,000–$2,000 to your budget if needed.

Edwardsville's electrical and plumbing inspection sequence: timing and what inspectors check

Once you've received your permit from Edwardsville Building Department, you must schedule inspections at three key stages. The first is rough plumbing (after all drain lines, vents, and supply lines are installed but before drywall is hung). The inspector checks trap arm lengths, vent locations, drain pitch, and GFCI-protected outlet circuits. If you've relocated a toilet, the inspector verifies the new drain connection to the stack and measures the trap arm — if it's over 6 feet to the vent, the inspector will flag it as a violation. The roughing inspection typically takes 30-45 minutes and must pass before you can proceed to drywall. The second inspection is rough electrical (also before drywall closure, or simultaneously with rough plumbing). The electrical inspector verifies GFCI outlets are correctly wired (test button and line terminals identified), AFCI breakers are installed for lighting circuits, and all new circuits are properly connected in the main panel. If you've added a new circuit, the inspector will confirm the breaker is the correct amperage for the wire gauge. This inspection often takes 20-30 minutes. The third inspection is final (after all finishes are complete: flooring, tile, fixtures installed, outlets covered). The final inspector walks through, tests all GFCI outlets (by pressing the test button), confirms the exhaust fan is vented to the exterior (not to the attic), and verifies the waterproofing on the shower is complete. Final inspections take 30-60 minutes. You must call Edwardsville Building Department to schedule each inspection; the city typically allows 24-48 hours notice and schedules within 5-7 business days.

Edwardsville Building Department's inspectors are experienced with bathroom code but often find common mistakes on first inspections. The most frequent issues are: (1) flex ductwork on the exhaust fan instead of rigid/semi-rigid, (2) GFCI outlets wired backwards (hot and neutral swapped), (3) the new toilet drain trap arm measuring over 6 feet without a vent, and (4) shower waterproofing not extended high enough on the walls (code requires at least 6 feet above the floor or 6 inches above the showerhead, whichever is higher). If an inspection fails, the inspector will issue a correction notice and schedule a re-inspection, typically within 7-10 days. Re-inspection fees vary but are usually $50–$100 per inspection. To avoid delays, have your contractor (or you, if owner-builder) walk through the rough plumbing stage with a code checklist: measure trap arm length, confirm the vent stack is accessible, check drain slopes with a level, and verify GFCI outlet wiring before the inspector arrives.

Edwardsville's permit office is accessible by phone during business hours (Mon-Fri 8 AM-5 PM, est. — confirm locally) and via email for permit questions. The online portal allows you to upload revisions and receive comments asynchronously, which is useful if you're not available for real-time phone calls. Building Department staff are typically responsive to pre-permit questions; if you call before submitting and ask 'Does my relocated shower require a waterproofing detail on the plan?', they'll clarify expectations, saving you a revision cycle. This proactive approach is worth the 15-minute phone call. The permit office doesn't allow in-person plan review appointments (as of 2024), so email and the portal are your channels for back-and-forth.

Common questions