Bathroom Remodel Permit in Granite City, IL (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

If you're relocating plumbing, adding electrical circuits, installing a new exhaust fan, or converting a tub to shower, Granite City requires a permit. Surface-only cosmetic work (new tile, vanity swap in place) does not.

Granite City Building Department applies the 2015 Illinois Building Code, which does NOT allow over-the-counter bathroom permits — all bathroom work that involves plumbing or electrical changes must be submitted for full plan review. This is different from some neighboring municipalities (like Edwardsville or Collinsville) where minor fixture replacements can be done under a blanket exemption. Granite City's proximity to the Mississippi River and its glacial-till soil base means drainage and frost depth are scrutinized closely on submitted plans: any relocated drain line must show trap-arm length compliance (IRC P2706 limits 40 inches horizontal run before vent), and rough plumbing inspection happens before drywall closes. Permit cost typically runs $300–$700 depending on stated project valuation, and plan review takes 3–4 weeks because the city's building department is moderately staffed. If you skip the permit for fixture relocation, the city's code-compliance officer (often notified by neighbors or discovered at a later sale inspection) can issue stop-work orders with fines and demand a retroactive permit at double the original fee plus all inspection costs.

What happens if you skip the permit (and you needed one)

Stop-work orders on relocated plumbing can trigger fines of $500–$1,500 in Granite City, plus mandatory re-permitting at double the standard fee ($600–$1,400 extra).
Insurance denial: most homeowners policies will not pay out for damage (mold, structural failure) if unpermitted plumbing work is discovered in claim investigation.
Home sale Title Defect Statement (TDS) requirement: Illinois law mandates disclosure of unpermitted work, and many buyers will walk or demand a $5,000–$15,000 price reduction.
Lender refinance block: banks will not refinance a property with undisclosed plumbing or electrical changes; discovery during appraisal can kill a loan.

Granite City full bathroom remodel permits — the key details

Granite City applies the 2015 Illinois Building Code (adopted statewide in 2017 but Granite City uses the 2015 edition locally). The core rule is straightforward: any work that involves plumbing, electrical, or structural changes requires a permit submitted to the City of Granite City Building Department. The threshold that triggers a permit is movement of ANY fixture (toilet, sink, tub, shower), addition of a new electrical circuit or outlet, installation of a new exhaust fan (even replacement with a different model), conversion of a tub to a shower or vice versa, or removal/relocation of any wall. Surface-only cosmetic work — tile installation on existing substrate, faucet or trim ring replacement in the same location, vanity swap without plumbing relocation, paint — does NOT require a permit. The distinction hinges on whether the work affects the drainage system, electrical load, ventilation ductwork, or structural framing. If you are uncertain, call the Building Department and describe the scope in writing; they will confirm via email whether a permit is needed.

Plumbing changes in Granite City bathrooms must comply with IRC P2706 (drainage fitting standards) and IRC P2701 through P2706 (water supply and drainage). The most common rejection point on submitted plans is the drain-line layout: when a toilet, tub, or sink is relocated, the horizontal run from the fixture trap to the vent stack cannot exceed 40 inches without adding an individual vent line (per IRC P2704). Granite City's 36–42 inch frost depth (depending on location within the city; 42 inches if near the northern boundary toward Illinois Route 3, 36 inches closer to the Mississippi River floodplain) does not directly affect interior bathroom drainage, but it does affect any exterior ductwork or vents that penetrate the roof or wall. Rough plumbing inspection must occur before drywall is hung, and the inspector will verify trap arms, vent locations, and pressure-balance (or thermostatic) valve installation if a tub-shower valve is present. IRC P2705.1 requires a vent within 6 feet of a fixture trap; if a relocated drain cannot meet this, you must install an individual vent, which adds cost and complexity.

Electrical work in Granite City bathrooms is governed by the 2020 National Electrical Code (NEC) as adopted into the 2015 Illinois Building Code. The core bathroom electrical rule is NEC 210.8(A): all outlets within 6 feet of a sink, tub, or shower must be GFCI-protected (ground-fault circuit interrupter). If you add new outlets, new circuits, or relocate outlets, the plan must show GFCI protection and specify whether it will be a GFCI outlet or a GFCI breaker protecting the entire circuit. Additionally, NEC 210.8(C) requires AFCI (arc-fault circuit interrupter) protection on all bedroom branch circuits; if your bathroom is adjacent to a bedroom or the circuit originates from a bedroom, this may apply. Any new exhaust fan installation must be specified with correct CFM (cubic feet per minute) rating — IRC M1505 requires a minimum of 50 CFM, or 20 CFM per linear foot of tub/shower if larger. The exhaust duct must terminate to the outdoors (not the attic), and the ductwork run must be shown on the electrical/HVAC plan with insulation and slope specifications. Rough electrical inspection happens before drywall; the inspector will verify GFCI device placement, circuit breaker labeling, wire gauges, and duct termination.

Shower and tub enclosure waterproofing is a critical code point in Granite City. IRC R702.4.2 (Bathroom and Other Wet Areas) requires a water-resistive or moisture-resistant backing material behind tile or other finish in wet areas. The most common specification is cement board (minimum 1/2-inch) plus a full-coverage waterproof membrane (liquid applied or sheet membrane). Some contractors use cement board alone or drywall with a paint-on sealant; these do not meet code and will be rejected during rough inspection. If you are converting a tub to a shower, the entire wall behind the new shower enclosure must be rebuilt to code, and the plan must specify the backing material and waterproofing system. The inspection will require rough framing and drywall verification before any tile is set. If you are replacing a tub with a shower in an existing location, the backing must still be code-compliant; if the existing wall cannot accommodate the required assembly thickness, you may need to frame out the wall or reduce the shower footprint.

Lead paint is a compliance issue for pre-1978 homes. If your Granite City home was built before 1978, any work that disturbs paint — including drywall removal, fixture removal, or tile demolition — triggers federal lead-safe work practice requirements (EPA RRP Rule). The contractor must be RRP-certified, use containment, and follow lead-safe cleanup procedures. This is not a local Granite City rule but a federal requirement that the Building Department will enforce if discovered. Failure to follow lead-safe practices can result in EPA fines of $16,000+ and local enforcement action. Disclose lead-era status to your contractor upfront; it adds $500–$1,500 to the project cost but is non-negotiable. Once a permit is issued, the timeline for plan review is typically 3–4 weeks; after approval, you may schedule the rough plumbing and electrical inspections. A typical full bathroom remodel has 4–5 inspection points: rough plumbing, rough electrical, drywall/framing (if walls are moved), final plumbing, and final electrical. The final inspection cannot be scheduled until all rough work is complete and approved.

Three Granite City bathroom remodel (full) scenarios

Scenario A

Relocating toilet and pedestal sink across the room, adding GFCI outlets, same exhaust fan — Granite City rambler

You're moving the toilet from the east wall to the north wall and the sink from an angle corner to a new location on the west wall. The existing exhaust fan will remain in place (no new ductwork). You're adding a 20-amp GFCI circuit for hair dryer and razor outlets. Plan submission must show: (1) trap-arm layout from the relocated toilet drain to the vent stack, confirming the horizontal run is under 40 inches (if longer, you need an individual vent line, adding cost); (2) new drain line for the relocated sink with trap and vent verification; (3) updated electrical plan showing the new GFCI circuit, 20-amp breaker, and outlet locations within 6 feet of the sink — all must be on the GFCI circuit; (4) framing plan if the wall cavity needs to be opened for drain routing. Rough plumbing inspection will verify trap arms, vent connections, and P-traps are installed. Rough electrical will verify wire gauge (12-gauge for 20 amp), GFCI device or breaker protection, and circuit breaker labeling. Drywall inspection occurs if framing is opened. Final plumbing and electrical inspections follow fixture installation. Timeline: 3–4 weeks for plan review, 2–3 weeks for construction and inspections. Permit cost: $400–$600 (based on $8,000–$12,000 stated project valuation). The main risk in Granite City is the trap-arm length; if your existing drain stack is far from the relocated toilet, you'll need to run a new vent line, which costs $1,500–$3,000 in additional rough-in work.

Scenario B

Converting existing tub to shower, adding new exhaust fan with exterior duct termination, new wall framing — North Granite City (near Route 3)

You're removing a 5-foot tub and installing a 3-foot × 3-foot walk-in shower in the same space. The existing exhaust fan is inadequate (30 CFM), so you're adding a new 80-CFM ductless or ducted fan with exterior termination on the roof. The shower enclosure requires full waterproofing: cement board backing plus a liquid-applied waterproof membrane covering all three walls and the floor pan. You're also framing out a small portion of the north wall to accommodate new valve rough-in. Plan submission must show: (1) the waterproofing assembly specification (cement board + membrane type, e.g., RedGard, Schluter, or equivalent); (2) tub-shower valve specification, including pressure-balance or thermostatic valve (required by code if new); (3) new exhaust duct layout with CFM rating (minimum 80 CFM for shower stall), ductwork diameter (typically 4 or 5 inches), insulation, and termination point (roof or wall with damper); (4) framing plan for the valve wall and any load-bearing verification if header is needed. Rough inspection will verify framing (if load-bearing wall is involved), water-resistive backing material, and duct termination before drywall. Drywall inspection occurs before tile. Final inspection after tile and fixtures are installed. Permit cost: $550–$750. Timeline: 4–5 weeks plan review (complex assembly drawings required); 3–4 weeks construction and inspections. The 42-inch frost depth near Route 3 means roof penetration must account for snow load and freeze-thaw cycling; the duct must be insulated and sloped to prevent condensation backup. This is a moderately complex project; the Building Department often requires a second round of plan comments if the waterproofing assembly or duct details are incomplete on first submission.

Scenario C

Vanity and faucet swap in place, tile over existing backsplash, no plumbing relocation, surface-only work — Mid-city bungalow

You're removing the existing vanity and faucet and installing a new 30-inch vanity in the exact same location, with new faucet lines connected to the existing supply stubs. You're not moving the drain; you're reusing the existing P-trap and drain line. You're also removing the existing tile backsplash and installing new tile over the existing wall (which has drywall). No new electrical circuits, no new exhaust fan, no wall moves. This is pure cosmetic replacement work. Granite City does NOT require a permit for this scope because: (1) the plumbing fixture is not being relocated (IRC P2701 does not apply); (2) no new electrical work is being done (the existing outlet serving the vanity area remains in place); (3) no new exhaust fan or ductwork is added; (4) tile installation on existing substrate is non-structural. You can proceed without a permit and without inspection. No permit fee. However, if you discover during demolition that the wall behind the tile is water-damaged or the drywall is compromised, you will need to address those issues with drywall repair — and if that repair is extensive enough (more than 25% of the wall), some jurisdictions may require a permit for the drywall replacement. To be safe, if you uncover structural damage, call the Building Department and ask if a permit is needed for the scope change. In this scenario, timeline is entirely yours; no city approval required. Total cost $2,000–$5,000 (vanity $400–$1,000, faucet $200–$600, tile labor/material $1,500–$3,500, permit $0).

Every project is different.

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Granite City's 42-inch frost depth and bathroom ventilation ductwork

Granite City straddles the boundary between IECC Climate Zone 5A (northern third, near Illinois Route 3) and 4A (southern third, near the Mississippi River floodplain). The frost-line depth is 42 inches in the north part of the city and 36 inches in the south. This matters for any bathroom exhaust ductwork that penetrates the roof or exterior wall. If you are adding a new exhaust fan and running ductwork to the outdoors, the IRC requires insulation on the duct (minimum 1-inch fiberglass or equivalent) and a slope of at least 1/4 inch per 12 inches to prevent condensation from pooling inside the duct and freezing in winter. A freeze-thaw cycle in the duct can cause blockage and water backup into the bathroom. Additionally, the duct termination on the roof must be flashed to prevent snow and ice from backing up into the duct. If your home is in the northern part of Granite City (Route 3 corridor), the Building Department's rough inspection will specifically check duct insulation and slope because of the colder winters and longer freeze season. Some contractors skip insulation on interior ductwork runs (before the roof), but the code requires it throughout. If the ductwork is not insulated during the rough inspection, the inspector will red-tag the work and you will need to remediate before proceeding. Plan ahead: insulated ducting costs about $1.50 per linear foot more than bare duct, but it is not optional.

Plumbing trap-arm length in Granite City bathrooms — the most common rejection

The single most common reason a Granite City bathroom remodel permit gets rejected or commented is incorrect trap-arm length. IRC P2704 limits the horizontal distance from a fixture trap to the vent stack to 40 inches; beyond that, you must install an individual vent. Many contractors and homeowners do not realize this rule exists. If you are relocating a toilet, sink, or tub, the drain line from the fixture trap to the vent stack cannot exceed 40 inches without adding complexity and cost. In an older Granite City home, the vent stack may be in the center of the house, meaning a relocated toilet or sink on an exterior wall might exceed the 40-inch limit. When this happens, you have two options: (1) install an individual vent line for the fixture (a separate 2-inch or 1.5-inch vent that runs up to the roof), which costs $800–$2,000 in additional rough-in labor and materials; or (2) relocate the fixture closer to the existing vent stack. Most homeowners choose option 1, but it requires additional framing, drywall work, and roof penetration. Plan your fixture relocation carefully and measure the distance from the new trap location to the existing vent stack. If the distance is close to or exceeds 40 inches, budget for an individual vent line. The Building Department's plan reviewer will calculate this distance based on your submitted floor plan, and if it is not compliant, the plan will be marked as incomplete until you add the vent line or relocate the fixture.

A second common rejection point is trap-arm slope. IRC P2705 requires a minimum slope of 1/4 inch per 12 inches (or 2% slope) on the drain line. If the trap arm is too flat or sloped in the wrong direction, water and debris will pool and cause backups. When you submit the plan, include a simple section or slope notation showing the elevation of the trap outlet compared to the vent connection point. The rough plumbing inspector will verify slope with a level during the on-site inspection. If the trap arm is not sloped correctly, the inspector will require the contractor to rework it — adding time and cost to the project.

City of Granite City Building Department
Granite City City Hall, Granite City, IL (exact street address varies; contact 618-452-3601 or visit city website)
Phone: 618-452-3601 (main city number; ask for Building Department) | Granite City may have an online permit portal; check https://www.granitecityillinois.com/ or contact the Building Department directly for permit application instructions and any digital submittal options
Monday–Friday, 8:00 AM–5:00 PM (verify hours; some IL cities close 12–1 PM for lunch)

Common questions

Do I need a permit if I'm just replacing my bathroom faucet or toilet in the same location?

No. Replacing a faucet, toilet, vanity, or light fixture in the same location without moving supply or drain lines is surface-only cosmetic work and does not require a permit in Granite City. You can purchase the fixture and install it yourself or hire a plumber; no permit or inspection is needed. However, if you discover water damage or structural issues during removal, and the repairs exceed minor caulking, call the Building Department to confirm whether a permit is needed for the remediation.

How long does it take to get a bathroom remodel permit approved in Granite City?

Plan review typically takes 3–4 weeks from the date you submit a complete application. Complex projects (involving waterproofing system specifications, ductwork details, or load-bearing walls) may take 4–5 weeks. Once approved, you can begin work and schedule inspections. If the city marks the plan incomplete or requires revisions, the review clock resets after you resubmit. Expedited review is not available for residential bathroom permits in Granite City.

What if I move forward with bathroom work without a permit and the city finds out?

The city code-compliance officer can issue a stop-work order, halt the project immediately, and require you to obtain a retroactive permit at double the standard fee plus all inspection costs. Additionally, unpermitted work must be disclosed when you sell the home (Illinois Title Defect Statement), and buyers will typically demand a price reduction of $5,000–$15,000 or walk away. If insurance is involved in any damage claim (mold, water damage), undisclosed unpermitted work may result in denial of coverage. It is always cheaper and faster to get the permit upfront.

I'm relocating the toilet to a different wall. What does the plumber need to show on the plan?

The plan must show the new trap location, the horizontal run length to the vent stack (must be under 40 inches per IRC P2704), the slope of the trap arm (minimum 1/4 inch drop per 12 inches), and whether an individual vent is needed. The plumber (or you, if submitting) should include a floor plan with dimensions from the new trap to the existing vent stack, and a simple cross-section showing the slope. If unsure, request a pre-submission consultation with the Building Department; they will review your sketches and tell you what is missing before formal application.

Is a pressure-balance tub-shower valve required in Granite City?

Yes, if you are installing a new tub-shower valve. IRC P2704 and the Illinois Building Code require a pressure-balanced or thermostatic valve to prevent sudden temperature changes (scalding). When you move forward with a new valve, specify the model number and manufacturer on the plumbing plan. The rough plumbing inspector will verify the valve is installed before drywall is closed. This is standard code and applies to all new or replacement valves in Illinois bathrooms.

I'm adding a new exhaust fan to my bathroom. What does the ductwork plan need to show?

The plan must include the fan CFM rating (minimum 50 CFM, or 20 CFM per linear foot of tub/shower if larger), duct diameter, insulation specification (minimum 1-inch), slope (1/4 inch per 12 inches minimum), and termination point (must exit to outdoors, not attic). If the duct runs through a conditioned space before exiting, it must be insulated throughout. The rough HVAC or general inspection will verify the duct is installed per plan, insulation is in place, and the termination is correct. Do not terminate exhaust ductwork into the attic; this violates code and can cause mold and moisture problems.

What if my home was built before 1978 and I'm doing bathroom work? Do I need to follow special rules?

Yes. Pre-1978 homes may contain lead paint. Any work that disturbs paint (demolition, fixture removal, sanding) triggers federal EPA lead-safe work practice requirements (RRP Rule). Your contractor must be EPA-certified, use containment and HEPA filtration, and follow lead-safe cleanup procedures. Failure to comply can result in EPA fines of $16,000+ per day. Lead-safe work adds $500–$1,500 to the project but is non-negotiable. Disclose the home's age to your contractor at the start, and verify they are RRP-certified. The Building Department will not require a separate lead permit, but they may verify compliance if the work is inspected.

Can I do the bathroom remodel work myself, or do I need a licensed contractor?

In Illinois, owner-builders can perform work on their own owner-occupied residential property without a contractor license, but all work must still comply with code and pass inspection. If you are doing the work yourself, you are responsible for obtaining the permit and scheduling inspections. Plumbing and electrical work have additional restrictions: Illinois does not allow homeowners to do their own electrical work (unless under the supervision of a licensed electrician), and plumbing work by a non-licensed person may not be permitted in some jurisdictions. Contact the Granite City Building Department to confirm owner-builder eligibility for plumbing and electrical in your specific project. If you hire a plumber or electrician, they must be licensed.

How much does a bathroom remodel permit cost in Granite City?

Permit fees are typically based on the stated project valuation. For a full bathroom remodel (fixture relocation, electrical, plumbing, waterproofing), expect a permit cost of $300–$700. A simple fixture replacement with no plumbing or electrical changes has no permit fee (because no permit is required). Contact the Building Department for the exact fee schedule or submit your project scope for a pre-application fee estimate. The fee is due when you submit the application; plan approval does not occur until the fee is received.

What inspections do I need to schedule for a bathroom remodel?

For a full bathroom remodel involving fixture relocation and plumbing/electrical changes, expect 4–5 inspections: rough plumbing (before drywall), rough electrical (before drywall), framing/drywall (if walls are moved), final plumbing (after fixtures are installed), and final electrical (after fixtures are installed). Each inspection must pass before the next phase begins. If drywall is not removed (vanity and faucet swap only), drywall inspection is skipped. Schedule inspections through the Building Department after roughing is complete. Typical inspection wait time is 2–3 business days in Granite City.

Disclaimer: This guide is based on research conducted in May 2026 using publicly available sources. Always verify current bathroom remodel (full) permit requirements with the City of Granite City Building Department before starting your project.

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