Bathroom Remodel Permit in Glen Ellyn, IL (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Glen Ellyn requires a permit if you relocate any plumbing fixture, add electrical circuits, install a new exhaust fan, change tub to shower (or vice versa), or move walls. Surface-only work — tile, vanity swap in place, fixture replacement without relocation — does not need a permit.

Glen Ellyn Building Department enforces the 2021 Illinois Energy Conservation Code (which incorporates the 2021 IRC by reference) and requires permits for any work that alters the plumbing or electrical systems, changes the waterproofing envelope (tub-to-shower conversions), or modifies the structure. What makes Glen Ellyn distinct: the city uses an online permit portal for submission and tracks plan-review timelines aggressively — most bathroom remodels are routed to over-the-counter review (3–5 business days) rather than full committee review, which keeps costs lower than in some Chicago suburbs. Glen Ellyn also sits in IECC Climate Zone 5A (north of 41st Street) and enforces strict blower-door testing requirements if your remodel involves removing and replacing exterior walls, which is unusual for bathrooms but affects larger gut jobs. The city's inspector corps routinely flags exhaust-fan duct termination details and shower waterproofing membrane selection — bring those details ready or expect a revision request. Owner-builders are allowed for owner-occupied homes, which is a significant cost-saver here.

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

Stop-work orders cost $250–$500 in fines; Glen Ellyn code enforcement monitors contractor activity and neighbors will call, making discovery likely.
Insurance denial on unpermitted plumbing or electrical work — water damage from an unlicensed fixture relocation can void your homeowner's policy, leaving you unprotected for repairs that cost $5,000–$50,000.
Title transfer and refinance blocking: Glen Ellyn tracks unpermitted work through title searches and permit history; selling or refinancing becomes difficult or impossible until the work is brought into compliance retroactively.
Double permit fees if caught — you'll owe the original permit fee plus a compliance fee (typically equal to the original fee), effectively adding $200–$800 to your final cost.

Glen Ellyn full bathroom remodels — the key details

Glen Ellyn's jurisdiction over bathroom remodels is straightforward but requires attention to local interpretation. The city adopts the 2021 Illinois Energy Conservation Code, which incorporates the 2021 IRC sections R3200 (Plastic, Cast Iron, Copper, and Stainless-Steel Drainage Systems), M1505 (Exhaust Fan Ventilation), E3902 (Ground-Fault Circuit Interrupter Protection), and R702.4.2 (Waterproofing Requirements for Showers and Bathtubs). A permit is required if you move plumbing fixtures (toilet, sink, tub/shower valve), add a new vent duct for exhaust, install new electrical circuits (such as a dedicated circuit for a heated floor or new lighting), change the tub/shower type (which triggers waterproofing assembly review), or alter any framing. The key trigger: if water, waste, or electricity change their route through the wall or floor, you need a permit. If you're swapping a vanity with a new one in the exact same location — drain hole, supply lines in the same spot — that is exempt. If you're replacing a toilet with an identical model in the same location and riser, that is exempt. If you're re-tiling an existing shower without touching the valve, drain, or exterior wall, that is exempt. The city does not require a separate plumbing license for owner-occupied work, but all rough plumbing must pass inspection before the wall is closed.

Exhaust ventilation is one of the most-flagged items in Glen Ellyn bathroom remodels. IRC M1505.2 requires a minimum 50 CFM intermittent fan or 20 CFM continuous fan, with ductwork terminating to the exterior (not into the attic or soffit). Glen Ellyn inspectors specifically require that you show the duct termination detail in your plan — a roof cap or wall exhaust hood with proper slope and insulation in Climate Zone 5A to prevent condensation and frost blockage. Many homeowners and contractors submit plans with just 'exhaust fan installed' and receive a revision request asking for duct routing and cap location. Moisture problems are endemic to the Midwest, and Glen Ellyn's building inspector pays close attention. If your new fan duct exceeds 25 feet in length, you must increase fan CFM by 10% for every 25 feet of duct (and every 90-degree bend), per M1505.4.2. A common miss: running flex ductwork over 50 feet with a standard 80 CFM fan will fail inspection.

Waterproofing for tub-to-shower conversions is the second major review point. IRC R702.4.2 and P2706 specify that all shower receptor surfaces must have a waterproof barrier — either a pre-formed shower pan liner (PVC, EPDM, or similar) or a site-built assembly (cement board plus liquid membrane plus tile). Glen Ellyn's building department requires you to specify which system you're using in the permit application. If you propose 'standard tile and mortar' without a secondary membrane, expect a denial or revision request. Most suburban inspectors are trained on the Wisconsin and Illinois plumbing board guidelines, which require either a pan liner (under tile) or a minimum 6-mil polyethylene sheet plus a liquid-applied membrane on all surfaces within 24 inches of the tub rim or shower enclosure. Cement board alone (Durock, HardieBacker) is not sufficient as a waterproofing layer in Glen Ellyn's interpretation — it must be paired with a membrane. If you're converting a tub to a walk-in shower, you'll also need a sloped floor or a pre-sloped pan, which triggers a plumbing inspection for trap location and drain pitch (minimum 1/4 inch per foot per P2706.1). Trap arm length cannot exceed the diameter of the pipe times 3 for most fixtures — for a 2-inch drain, the arm cannot exceed 6 feet before a vent tee.

Electrical changes in bathrooms trigger GFCI and AFCI rules that Glen Ellyn enforces strictly. Every outlet within 6 feet of a sink, tub, or shower must be GFCI-protected per NEC 210.52(C), and any outlet within 6 feet of a tub or shower opening must also have AFCI protection as of the 2021 code. If you're adding a heated floor, that requires a dedicated 20-amp circuit and GFCI protection. If you're installing a new lighting circuit, it must be on a separate circuit from the outlets (code allows mixed, but Glen Ellyn inspectors prefer separation). Exhaust fan motors in wet areas require GFCI protection per NEC 210.8. Your electrical plan must show all GFCI and AFCI breaker locations and outlet ratings; missing this detail is the #1 reason for electrical revision requests in Glen Ellyn. If you're hiring a licensed electrician (required in Illinois for most new circuits), they'll handle this, but if you're doing owner-builder work, you must submit a detailed electrical single-line diagram.

Glen Ellyn's permit process and timeline are relatively efficient compared to larger Chicago suburbs. Once you submit your permit application (online or in person at City Hall), plan review typically takes 3–5 business days for a bathroom remodel, as these are routed to over-the-counter review unless they involve structural changes or are flagged for complexity. Inspection sequence is: rough plumbing (before walls close), rough electrical (before walls close), framing (if applicable), drywall, final plumbing, final electrical, and final walk-through. If you're only doing a cosmetic remodel with no fixture relocation or electrical work, you may not need any rough inspections — just final. The city's online portal allows you to track inspection requests and upload revised plans if needed. Permit fees typically run $300–$600 depending on the scope (plumbing vs. electrical vs. both) and estimated project valuation. The city does not require an architect or engineer for most residential bathroom remodels, though they do require that if you're moving a load-bearing wall (which would be unusual in a bathroom). If your home was built before 1978, you'll also need to address lead-paint disclosure and containment rules — Glen Ellyn does not exempt pre-1978 bathroom work from Illinois' renovation, repair, and painting (RRP) rule, so expect the contractor to use containment or pay a compliance fine.

Three Glen Ellyn bathroom remodel (full) scenarios

Scenario A

Vanity and tile swap, sink in same location, no fixture relocation — Westview neighborhood

You're removing the existing vanity and replacing it with a new one of the same width, re-using the existing faucet or installing an identical one in the same hole, and re-tiling the shower surround without moving the tub or shower valve. The drain and supply lines stay in place. This is a surface-only cosmetic job and does not trigger a permit in Glen Ellyn. You do not need to file anything with the Building Department; you can purchase materials and start work immediately. Tile removal and reinstallation, grout repair, and vanity cabinet replacement all fall under the 'repair and replacement in kind' exemption in the 2021 Illinois Energy Conservation Code (Section 1.402.2). However, if you discover asbestos-containing materials during demolition (common in pre-1980 homes), you must stop work and contact a licensed asbestos abatement contractor — that will add $1,000–$3,000 to your budget. If the existing plumbing is corroded and you need to replace a supply line or P-trap while you have the vanity out, you can do that as part of the repair exemption, but if you're adding a new vent line or re-routing the drain to a different location, you've crossed into permit territory. Total cost for this scenario: $2,000–$5,000 for materials and labor, $0 in permit fees.

Scenario B

Relocating toilet and sink, moving walls, new exhaust duct — Elm Street historic district

You're reconfiguring your bathroom by moving the toilet 4 feet to the opposite wall, relocating the sink 2 feet, and removing a non-load-bearing wall to expand the shower. You're also adding a new exhaust fan duct that will terminate through the roof. This is a full gut remodel and requires a full permit application. Glen Ellyn's Building Department will require: (1) a plumbing plan showing the new toilet riser location, sink supply and drain routing, vent stack location and termination, and trap arm lengths (must be reviewed to ensure they don't exceed 6 feet without a vent); (2) an electrical plan showing the new GFCI outlets (within 6 feet of the sink and tub), the exhaust fan motor circuit and GFCI protection, and any new lighting circuits; (3) a framing plan if removing the wall (showing that it is non-load-bearing, or that it will be braced if load-bearing); (4) a waterproofing detail for the shower (cement board + liquid membrane, or pan liner system specification). Because this is in the Elm Street historic district, you may also need a Certificate of Appropriateness (COA) from the Glen Ellyn Historic Preservation Commission if the exterior changes (roof penetration for the exhaust duct). The COA process adds 1–2 weeks and may require specific materials or colors. Permit review will take 5–10 business days due to the complexity. You'll have rough plumbing, rough electrical, and framing inspections before closing walls, then drywall, final plumbing, and final electrical. Total timeline: 3–5 weeks from permit issue to final sign-off. The exhaust duct must terminate with a roof cap or wall hood at least 10 feet from any window or door (per M1505.4.1) and must slope downward to the exterior to prevent water intrusion (common leak source in Midwest climates). If the duct runs over 30 feet, you'll need a larger fan (100+ CFM) to overcome friction loss. Total project cost: $8,000–$20,000 depending on whether you're reconfiguring the plumbing run significantly. Permit fees: $400–$700 based on the estimated project valuation (typically 1.5–2% of construction cost).

Scenario C

Tub-to-shower conversion with new vent fan and heated floor — North Avenue, owner-builder

You're converting an existing bathtub to a walk-in shower, installing a new exhaust fan with ductwork, and adding a heated floor (electric mat system). You're keeping the shower in the same corner of the room (same exterior wall), but you need to install a sloped shower pan and a new drain line to support the pan slope. You also want to add a dedicated 20-amp circuit for the heated floor and GFCI outlets for safety. This requires a permit because: (1) the plumbing drain changes location and slope (from a tub drain to a floor drain with 1/4-inch-per-foot pitch); (2) the waterproofing assembly is new (you're going from a tub (which has its own rim protection) to a shower floor (which requires a pan liner or site-built membrane); (3) you're adding a new vent fan duct; (4) you're adding a new electrical circuit. Glen Ellyn Building Department will require detailed submittals showing: the shower pan system (pre-formed PVC pan with sloped floor, or site-built cement board + liquid membrane); the drain arm length and vent routing; the exhaust duct termination (roof cap or wall hood with slope); and the heated floor circuit diagram (20-amp dedicated circuit, GFCI protection, thermostat location). The waterproofing detail is critical here — if you specify only 'tile and thinset,' you will receive a revision request. The industry standard in Glen Ellyn is a Schluter pre-formed curbed shower pan system (PVC or EPDM) or a Kerdi membrane system — both are explicitly allowed. Concrete pan with a liquid membrane is acceptable if detailed. Plan review will take 5–7 business days due to the waterproofing and electrical components. Rough plumbing inspection is required before the shower pan is tiled (inspector verifies drain pitch, trap arm length, vent routing, and pan liner integrity). Rough electrical inspection is required before the heated floor mat is covered (inspector verifies circuit protection and GFCI outlet placement). Final inspection includes water test of the shower pan (plumbing) and energized circuit check (electrical). Total timeline: 4–6 weeks from permit to final approval. As an owner-builder, you can pull the permit yourself (save $500–$800 in contractor markup), but you must be present at rough inspections and be prepared to answer questions about your waterproofing system choice. Total project cost: $6,000–$15,000. Permit fees: $350–$600.

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Waterproofing and the tub-to-shower trap: why Glen Ellyn inspectors flag it

The most common issue with tub-to-shower conversions in Glen Ellyn is incomplete waterproofing detail. When homeowners (or contractors) submit a plan that says 'tile shower' without specifying the moisture barrier system, Glen Ellyn's inspector has to assume the builder plans to use mortar-bed tile only, which has failed in hundreds of Midwest bathrooms over the past 30 years. IRC R702.4.2 requires a waterproof surface behind all tile in wet areas, but the code does not mandate a specific system — it allows pre-formed pan liners, liquid membranes, or sheet membranes, provided they're properly installed. Glen Ellyn, influenced by Wisconsin and Illinois plumbing-board guidance (which sees persistent mold and water damage claims), interprets this to mean: specify the system in writing, or expect a rejection.

The practical difference: a pre-formed PVC or EPDM shower pan (Schluter, Wedi, JacuzziShop, or equivalent) costs $400–$800 and is installed before tiling. It has sloped floor and curb built in, reducing the risk of water pooling. A site-built system (cement board on studs, then a liquid membrane like Redgard or Hydro Ban) costs $150–$400 in materials but requires precise execution and curing time. If you choose site-built, your plan must show the membrane product name, the application method (spray, roller, or liquid), and the coverage area (all floor surfaces and 24 inches up the wall from the floor). Missing this detail costs you a revision request, adding 1–2 weeks to your timeline. Glen Ellyn does not require an engineer's sign-off for waterproofing, but your plan must be clear enough that the inspector can verify compliance on site.

The cost impact: a revision request due to waterproofing ambiguity adds $0–$300 in permit re-submission fees but costs you real time (2-week delay) and contractor scheduling headaches. The water-damage risk if you get it wrong after final approval is $5,000–$50,000 (rot, mold, structural damage). Specify your waterproofing system up front, include a product datasheet in your permit packet, and you'll pass inspection on the first try.

Exhaust ventilation in Glen Ellyn: Climate Zone 5A and attic moisture

Glen Ellyn sits in IECC Climate Zone 5A, which means cold, dry winters with occasional moisture intrusion through uninsulated ductwork. If your bathroom exhaust duct terminates into the attic or a soffit without a cap, you're violating both the IRC and Glen Ellyn code — and you're creating a condensation and frost problem that will clog your duct by February. Many contractors and DIYers make this mistake because they think 'vented to attic' counts as 'vented to outside.' It doesn't. Glen Ellyn inspectors specifically ask: 'Where does the duct terminate?' If you can't point to a cap or hood on the exterior of the home, the inspection fails.

The duct itself must also meet IRC M1505.4.1: minimum 4-inch diameter rigid or approved flexible duct, with no more than 25 feet of length in a straight run (or 1 foot of equivalent per 90-degree bend). If your duct run is 30 feet from the bathroom to a roof penetration, you must either: (a) increase the fan CFM to 100+ (oversize the fan); (b) reduce duct length by re-routing; or (c) install a booster fan inline. Glen Ellyn does not require a booster fan in your plan, but if your duct exceeds 50 feet, the inspector will ask about it at rough inspection. Sealing the duct with duct mastic or foil-backed tape is required (not duct tape, which fails in Midwest humidity and temperature cycling). Your plan should note the duct material (aluminum or stainless-steel flex, preferred; not vinyl) and the termination detail (roof cap with damper, or wall hood with slope — no soffit vents allowed).

Cost and timeline: a standard roof-cap or wall-hood exhaust termination costs $40–$150 in materials and 1–2 hours of labor. If you need to reroute ductwork or upsize the fan, add $200–$500. Plan review delay due to missing duct termination detail: 1–2 weeks. Water intrusion damage if the duct is improperly terminated: $1,000–$10,000 (roof leak, attic mold, insulation saturation). Get the duct detail right in your permit submission, and you'll avoid this trap.

City of Glen Ellyn Building Department
Glen Ellyn City Hall, 535 Duane Street, Glen Ellyn, IL 60137
Phone: (630) 469-5000 (main number; ask for Building Department or Building Permits) | https://www.glenellyn.org (search for 'Building Permits' or 'Permit Portal'; Glen Ellyn uses an online portal system)
Monday–Friday, 8:00 AM–5:00 PM (phone and in-person; confirm hours before visiting)

Common questions

Do I need a permit to replace a faucet or toilet in my bathroom?

No, if the faucet and toilet are installed in the exact same location (same holes, same supply and drain lines). This is repair and replacement in kind, exempt under the 2021 Illinois Energy Conservation Code Section 1.402.2. If you're relocating either fixture — moving the toilet to a different wall, or installing the sink in a new location — you need a permit because the plumbing drain and vent routing changes. If you discover corrosion or damage while replacing the fixture, you can address it as part of the repair exemption without triggering a permit.

What's the most common reason Glen Ellyn rejects bathroom remodel permits on first submission?

Incomplete waterproofing detail and missing exhaust duct termination location. Most rejections cite either 'Shower waterproofing system not specified per IRC R702.4.2' or 'Exhaust duct termination to exterior not shown on plan.' Submitting a plan with 'waterproof tile' or 'exhaust fan installed' without product names or termination details will trigger a revision request. Include the specific waterproofing product (e.g., Schluter Kerdi system, Redgard liquid membrane, or pre-formed PVC pan) and a detail drawing showing the exhaust hood or roof cap location, and you'll pass review on the first try.

Can I do a bathroom remodel as an owner-builder in Glen Ellyn, or do I need a licensed contractor?

Owner-builders are allowed for owner-occupied homes in Glen Ellyn. You can pull the permit yourself and perform the work, but if you hire a plumber or electrician, they must be licensed (Illinois requires licensed plumbers for new water supply or drain lines, and licensed electricians for new circuits). Rough plumbing and electrical inspections are mandatory before you close walls, and you must be present at those inspections to explain your work and pass code questions. Owner-builder permits cost the same as contractor permits, but you save the contractor markup (typically 15–25% of labor).

How long does plan review take for a bathroom remodel in Glen Ellyn?

Typical plan review is 3–5 business days for surface-only cosmetic work (which doesn't need a permit) or over-the-counter structural/mechanical changes (plumbing fixture relocation, new exhaust duct). If the project involves a wall removal or is flagged as complex, review may take 7–10 business days. If your project is in the Elm Street historic district and requires a Certificate of Appropriateness, add 1–2 weeks. Submit a complete plan with all required details (waterproofing, duct termination, electrical circuit diagram) and you'll avoid revision requests that add 2–3 weeks.

What if my home was built before 1978 — does that affect my bathroom remodel permit?

Yes. Illinois' Renovation, Repair, and Painting (RRP) rule applies to all pre-1978 homes, including bathrooms. The contractor (or you, if owner-builder) must comply with EPA lead-safe work practices: containment of work area, HEPA vacuuming, cleaning, and disposal of lead-contaminated waste. This adds $500–$2,000 to your project cost depending on scope. Glen Ellyn does not exempt any bathroom work from RRP, and inspectors verify compliance. If you plan to hire a contractor, confirm they are EPA-certified for lead-safe work practices; if not, you'll face fines and may lose your permit.

Do I need GFCI outlets in my bathroom remodel?

Yes. Per NEC 210.52(C), every outlet within 6 feet of a sink, tub, or shower must be GFCI-protected. This includes any outlets you add for heated-floor thermostats, ventilation fans, or lighting. If you're adding a new exhaust fan motor in a wet area, it must also have GFCI protection per NEC 210.8. Your electrical plan must show GFCI breaker locations; missing this detail is the #1 electrical revision request in Glen Ellyn. GFCI outlets and breakers are inexpensive ($15–$40 each) and widely available, so including them in your initial plan submission avoids a revision.

What's the permit fee for a bathroom remodel in Glen Ellyn?

Permit fees typically range from $200–$800 depending on the scope and estimated project valuation. Glen Ellyn calculates fees at 1.5–2% of the construction cost. A simple cosmetic vanity swap might be $200 if permitted; a full fixture relocation with new electrical and plumbing could be $600–$800. Fees are due at permit issuance and are non-refundable. If you receive a revision request and resubmit, there is no additional fee. If you fail final inspection and must resubmit for re-inspection, you may owe a re-inspection fee ($100–$200).

Can I use my attic as the termination point for my exhaust fan duct?

No. IRC M1505 and Glen Ellyn code require the exhaust duct to terminate to the exterior of the home, not into the attic or soffit. Venting to the attic violates code and creates a condensation and mold problem in Glen Ellyn's cold, dry winters. The duct must terminate with a dampered cap (roof cap if on the roof, wall hood if on a gable wall) with a minimum 10-foot clearance from windows and doors per M1505.4.1. If your duct currently vents to the attic, you must install a cap and seal the attic penetration, or you'll fail final inspection.

What's the maximum trap arm length for a bathroom sink or toilet in Glen Ellyn?

Per IRC P2706, trap arm length is limited to 3 times the trap diameter. For a standard 1.5-inch sink trap, the maximum arm length is 4.5 feet; for a 2-inch toilet riser, it's 6 feet. If you're relocating a fixture, Glen Ellyn's plumbing inspector will measure the trap arm during rough inspection and verify it does not exceed the code limit. If it does, you must add a vent tee closer to the trap or re-route the drain, which requires wall demolition and rework. Specify trap arm length in your plumbing plan to avoid this surprise at inspection.

What happens during the final bathroom inspection in Glen Ellyn?

Final inspection includes: visual verification of all finishes (tile, grout, paint, trim) matching the approved plan; water testing of the shower pan or tub (plumbing verifies no leaks); a test of GFCI outlets and circuits (electrical verifies protection); operation of the exhaust fan and duct flow (plumbing verifies duct is not blocked and air moves to exterior); and verification of any structural or cosmetic conditions noted in the approved plan. If all systems pass, the permit is signed off and you can use the bathroom. If any item fails, the inspector issues a 'request for correction' and schedules a follow-up inspection (typically 5–10 days). Most bathrooms pass final on the first try if the rough inspections were completed and approved.

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 Glen Ellyn Building Department before starting your project.

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