Bathroom Remodel Permit in Chicago Heights, IL (2026)

Q: Do I need a permit if I'm just replacing a toilet or vanity in the same location?

No, replacing a toilet or vanity in the same location is typically exempt from permitting, as long as you're not relocating the drain or supply lines. However, if you're installing a new exhaust fan, even as part of a vanity swap, a permit is required. Also, if the old plumbing has lead solder or the home was built before 1978, lead-safe work practices apply during demolition.

Q: What's the difference between a tub-to-shower conversion and just re-tiling a shower?

Re-tiling an existing shower in place (same fixtures, same walls) is typically exempt. Converting a tub to a shower (or shower to tub) requires a permit because you're changing the waterproofing assembly per IRC R702.4.2. The new waterproofing detail must be submitted with the permit application and approved before you begin tile work.

Q: How long does plan review typically take in Chicago Heights?

Standard bathroom remodels with complete drawings take 7–14 business days for plan review. If you're relocating fixtures or submitting unclear drawings, plan on one resubmission cycle, adding another 7–10 days. Structural work (wall removal) adds 14–21 days for structural engineering review. Total timeline from submission to permit issuance is typically 3–4 weeks for routine work.

Q: What happens if the city inspector finds asbestos or lead paint during my bathroom remodel?

If asbestos is suspected (common in pre-1980 homes), you must hire a licensed Illinois asbestos inspector to sample and assess before disturbing it. If confirmed, a licensed abatement contractor must remove it; this is a separate permit process. For lead paint, if your home was built before 1978 and you're disturbing painted surfaces, you must hire an EPA-certified renovator to manage containment and cleanup per lead-safe work practices. The city's inspector may ask for proof of certification on-site.

Q: Can I do the work myself as an owner-builder, or do I need a licensed contractor?

Chicago Heights allows owner-builder work for owner-occupied residential properties; you can pull the permit yourself. However, all work must still pass rough-in and final inspections, and any licensed trades (electrician, plumber) must sign off on their work or you must perform the work within owner-builder exemptions (typically cosmetic finishes). Most homeowners hire licensed trades for plumbing and electrical rough-in and do the finishes themselves.

Q: What's included in a rough-in inspection for a bathroom remodel?

A rough-in inspection checks plumbing trap slope (minimum 1/4 inch per 12 inches), trap-arm length (maximum 6 feet for a toilet unless wet-vented), vent routing and sizing, new water supply line, and electrical circuit rough-in (wire gauge, circuit breaker assignment, GFCI/AFCI labeling). Do not cover the trap arm, vent, or electrical wiring with drywall or insulation before rough-in inspection; the inspector must see all plumbing and electrical work exposed.

Q: How much does a bathroom remodel permit cost in Chicago Heights?

Permit fees are typically 1.5–2% of the estimated project valuation. A modest vanity and fixture swap ($2,000–$4,000) costs $150–$250. A fixture relocation with shower conversion ($8,000–$15,000) costs $400–$700. Structural work (wall removal) adds $300–$500 for a structural-engineering permit. Always request a permit fee estimate from the city before submitting your application.

Q: Can I have the shower waterproofed with drywall and a shower pan liner instead of cement board and membrane?

No. Chicago Heights enforces IRC R702.4.2, which prohibits drywall as a substrate for tile in wet areas; you must use cement board. The waterproofing can be a pre-fabricated fiberglass unit (no additional membrane) or a site-built tile system with cement board, membrane (4-mil poly or proprietary brand), and sealed grout. Drywall behind tile will fail the city's pre-waterproofing inspection.

Q: What if my bathroom is in a basement or lower level?

Basement bathrooms require extra attention to drainage and moisture control. Your drain must slope away from the foundation at the required 1/4 inch per 12 inches; if the basement floor slab is below grade and you're running a drain, it must daylight or connect to a sump pump. Exhaust ventilation is mandatory and must duct outside (not to an attic or crawlspace). Chicago Heights' high water table in some areas makes basement moisture a common issue; the city's inspectors will be strict about trap slope and waterproofing compliance.

Q: Do I need separate electrical and plumbing permits, or can I do them under one bathroom permit?

Chicago Heights requires separate permits for plumbing, electrical, and building/structural work. You'll submit a single application, but the fees and inspections are tracked separately. The plumbing inspector approves trap, vent, and drain work. The electrical inspector approves GFCI/AFCI circuits, wire sizing, and circuit-breaker assignments. Make sure your contractor or you submit all three applications together to avoid delays.

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Chicago Heights requires a permit whenever you relocate any plumbing fixture, add electrical circuits, install new exhaust ventilation, or modify walls. Surface-only work—tile, vanity, or faucet replacement in place—is exempt.

Chicago Heights, like most Illinois municipalities in Will and Cook counties, applies the 2021 Illinois Building Code (which mirrors the 2021 IBC). The city's Building Department enforces this strictly for bathroom work because bathrooms involve water management (drainage slope, trap placement), electrical safety (GFCI/AFCI proximity to water), and moisture control (exhaust fan sizing and ducting). What sets Chicago Heights apart from neighboring suburbs like Homewood or Flossmoor is the city's online permit portal integration with the county assessor—submitted plans are cross-checked against property records to flag unpermitted work on resale disclosures. Additionally, Chicago Heights sits in a glacial-till soil zone with a 42-inch frost depth (shared with Chicago proper), which affects any plumbing work that runs below slab or near footings; the city's inspectors will flag drains that don't slope at the IRC minimum of 1/4 inch per foot, and they're meticulous about trap-arm length compliance (IRC P2705 limits horizontal trap arm to 6 feet for most fixtures, 10 feet for special cases). Plan-review turnaround is typically 10–14 business days for a straightforward bathroom remodel with complete drawings; submitted plans must show trap locations, vent routing, electrical GFCI/AFCI labeling, and exhaust-fan duct termination. The city does NOT currently allow over-the-counter approvals for bathroom work—all plans require plan-review staff sign-off before you pull a permit and begin work.

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

A city inspector spotting unpermitted plumbing or electrical work can issue a stop-work order and levy a $500–$1,500 fine; if caught during a property sale disclosure process, the city may demand removal or retroactive permit fees of $200–$600 plus double inspection costs.
Insurance will deny a claim for water damage or mold in an unpermitted bathroom because the work lacks code-compliant waterproofing documentation (IRC R702.4.2 waterproofing assembly).
When you refinance or sell, the title company or lender may require a permit history search; missing permits can delay closing by 4–8 weeks or force a costly post-hoc inspection and remediation.
If a fixture drain traps improperly and causes sewer gas backup or drainage failure post-closing, the previous owner can face a lien claim for repair costs, which often run $2,000–$5,000 for drain replacement.

Chicago Heights full bathroom remodels—the key details

Owner-builder work is permitted in Chicago Heights for owner-occupied residential properties; if you're the homeowner and doing the work yourself, you can pull the permit. However, plumbing and electrical work must still pass rough-in and final inspections, and the city requires that any licensed trades (electrician, plumber) sign off on their work or that you perform work within the scope of an owner-builder exemption (typically cosmetic or surface-level tasks). Many Chicago Heights homeowners hire a general contractor or licensed plumber/electrician to handle the code-critical work and do cosmetic finishes themselves; this is allowed, but all work must be permitted and inspected. If you're a non-owner (investor or landlord), you cannot use the owner-builder exemption, and a licensed contractor must pull the permit and sign all work. Lead-safe work practices apply to any pre-1978 home; if you're disturbing paint during demolition, you must hire an EPA-certified renovator, use containment and HEPA filtration, and dispose of lead waste per EPA regulations. Chicago Heights does not have a separate lead-safe work permit, but the building inspector may ask to see proof of certification on-site during rough-in. If asbestos is suspected (common in old popcorn ceilings, pipe insulation, or floor tiles), do not disturb it; instead, hire a licensed Illinois asbestos inspector to sample and assess, and if present, hire a licensed abatement contractor to remove it prior to permit work. The city's asbestos program is administered through the Illinois Department of Public Health, but Chicago Heights code enforcement will verify compliance.

Three Chicago Heights bathroom remodel (full) scenarios

Scenario A

Vanity swap and faucet upgrade in original location, new exhaust fan, existing plumbing and electrical unchanged—Cottage Grove area, 1950s ranch

You're replacing an old wall-mounted vanity with a new 36-inch cabinet vanity in the exact same wall location, upgrading the faucet, and installing a new exhaust fan because the old one is broken. The sink drain and supply lines remain in the same wall cavity; no new vent is needed. Plumbing fixture relocation does not apply here because the sink is not moving to a new location. However, you ARE installing a new exhaust fan, which triggers permitting per IRC M1505. Even though this seems like a cosmetic update, the new exhaust fan requires a permit application showing the fan CFM rating, duct size, and termination location (roof or wall). The city will require an electrical plan showing the fan circuit is on GFCI (if it includes a light) or a separate 15-amp circuit. Estimated valuation is $2,000–$4,000 (materials + labor for vanity, faucet, and fan install); permit fee will be approximately $150–$250. Plan review takes 7–10 business days; no framing or waterproofing review needed because you're not relocating fixtures or building a new shower. Rough-in inspection covers exhaust-fan duct slope (minimum 1/4 inch drop per 12 inches horizontal run), duct sealing, termination location, and electrical circuit. Final inspection checks fixture operation and any caulking around the new vanity. Timeline: 3–4 weeks from permit submission to final approval.

Scenario B

Relocating toilet to opposite wall, tub-to-shower conversion with tile and membrane waterproofing, new GFCI circuit, existing vent remains—South Chicago Heights Victorian, pre-1950

You're moving the toilet from the east wall to the west wall (approximately 8 feet away), removing a freestanding tub and installing a walk-in tile shower in its place, and adding a new 20-amp GFCI circuit for bathroom receptacles. This is a full remodel with fixture relocation and a major waterproofing assembly change. Toilet relocation is a plumbing-permit trigger: the new toilet location requires a new vent stack branch (or wet-vent off the main stack if the distance is <5 feet), a new trap with proper slope (1/4 inch per 12 inches), and a new water supply line. The city will require a plumbing isometric or riser diagram showing the vent routing, trap location, trap-arm length (must not exceed 6 feet for a water closet), and vent diameter (typically 3 inches for a single toilet). Tub-to-shower conversion requires an entirely new waterproofing specification per IRC R702.4.2: mortar bed with 4-mil polyethylene membrane, cement-board backing, and sealed tile grout. The permit application must include a waterproofing detail sheet from the membrane manufacturer, showing thickness, coverage, sealing method, and tile bond coat. This is the most common rejection point; the city will not approve vague language like 'waterproofed tile system'—you must name the exact membrane product and installation method. Electrical work includes a new 20-amp GFCI circuit for the bathroom receptacles; if you're adding a heated towel rail or exhaust fan on a separate circuit, two new circuits are needed. Lead-safe work rules apply because the home was built pre-1950; you must hire an EPA-certified renovator to manage demolition, or document that you've been certified. Estimated project valuation is $8,000–$15,000 (fixture removal, new plumbing, waterproofing, tile, electrical, labor). Permit fee will be approximately $400–$700. Plan review takes 10–14 business days because the city must validate trap-arm length, vent sizing, waterproofing detail, and electrical GFCI labeling. Rough-in inspection checks trap slope, trap-arm length, vent routing and sizing, new water supply line, and electrical rough-in; do not cover the trap arm or vent with drywall until inspected. Drywall inspection (if walls are being modified) checks stud spacing and backing for tile. Pre-waterproofing inspection is required before membrane is installed; the inspector will verify the substrate (mortar bed and cement board) is correct per the submitted detail. Final inspection covers tile sealing, fixture installation, electrical GFCI testing, and waterproofing integrity. Timeline: 6–8 weeks from permit submission to final approval; plan-review feedback on waterproofing detail often requires one resubmission cycle.

Scenario C

Removing interior wall (load-bearing) to combine two adjacent small bathrooms into one larger bathroom, all new fixtures, new vent stack, new electrical panel upgrade—Crete industrial area, 1970s commercial-converted apartment

This is a structural remodel: you're removing a load-bearing wall to combine two small bathrooms into one large open bathroom. This is not just a plumbing permit; it requires structural engineering, a building permit for the wall removal, and a separate plumbing/electrical permit. Chicago Heights enforces the 2021 IBC R602.3 requirement for structural review: any interior load-bearing wall removal must be designed by a licensed structural engineer and submitted with the permit application. The engineer will specify a beam (steel or LVL) to carry the load of any walls or roof framing above, along with bearing-point details and footing requirements. Because you're combining bathrooms, you likely have a single vent stack instead of two, and you may be relocating the main drain; new vent-sizing calculations per IRC M2103 are required. All fixture locations must be shown on a floor plan with dimensions and distances to existing vents. Electrical work includes upgrading the panel (if existing circuits are overloaded) and running new GFCI circuits for the larger bathroom. Lead-paint (or asbestos) is a high risk in a 1970s commercial-converted building; hazmat surveys are mandatory before demolition. Estimated project valuation is $15,000–$30,000+ (engineering, structural work, plumbing, electrical, finishes). Permit fees will include a structural-engineering permit ($300–$500) plus plumbing ($300–$400) plus electrical ($200–$300) = $800–$1,200 total. Plan review is extensive: 14–21 business days for structural review alone, plus plumbing and electrical review. Inspections include framing (to verify beam installation and support), rough plumbing, rough electrical, drywall, waterproofing (if shower), final. The structural inspector will verify beam installation, bearing points, and footing compliance before you proceed with closing walls. Because this is a major renovation with structural changes, the city may also require a Certificate of Occupancy update or property re-assessment by the assessor after completion. Timeline: 8–12 weeks from engineer design through final inspection; the structural review phase alone often takes 3–4 weeks.

Load-bearing wall removal requires structural engineer and building permit | Plumbing and electrical permits separate | Total permit fees $800–$1,200 | Project cost $15,000–$30,000+ | Structural, framing, rough-in, waterproofing, and final inspections required | Plan review 14–21 business days for structural component | Likely property re-assessment after completion | Timeline 8–12 weeks

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Chicago Heights waterproofing and drainage: Why shower Pan details matter so much

Chicago Heights sits on glacial-till soil with high water tables in some neighborhoods (particularly south of Interstate 80); bathrooms in basements or lower levels are especially prone to moisture and mold if the shower waterproofing assembly is inadequate. The city's building inspectors are strict about waterproofing compliance because of past mold complaints and insurance claims. IRC R702.4.2 specifies two approved methods: (1) a pre-fabricated fiberglass or acrylic shower unit (requires no additional waterproofing), or (2) a site-built tile system with a waterproof membrane. For site-built tile, the code requires a mortar bed (typically 1.25 inches of Portland cement mortar over the shower pan slope), a waterproof membrane (minimum 4-mil polyethylene sheeting, or proprietary membrane like Schluter, Red Guard, or Wedi), cement-board substrate (not drywall), and sealed grout. The city's permit application asks you to specify the exact membrane product and provide the manufacturer's installation instructions; vague approvals for 'waterproofed tile' will be rejected.

The sloped shower pan itself is critical: IRC P2711 requires a minimum slope of 1/4 inch per 12 inches of run toward a central drain or perimeter drain channel. Many Chicago Heights bathrooms are in basements or on concrete slabs; if your shower is built on a concrete slab, the slab must be sloped during the mortar-bed installation, or the mortar bed itself must be pitched. If you install a flat mortar bed on a flat slab, water will pond and seep through the membrane—a common failure. The city's pre-waterproofing inspection (done after the mortar bed and membrane are installed but before tile) checks the slope with a level and measures the membrane sealing at the drain and walls. Any visible pooling or gaps will trigger a rejection; you'll have to remove tile, regrade the bed, and reinstall.

For tub-to-shower conversions, the existing bathtub surround often has no membrane; if you're tiling over old drywall, you must remove the drywall, install cement board, apply membrane, and then tile. Many homeowners try to save money by tiling directly over existing drywall; the city will fail the pre-waterproofing inspection and require removal. The cost difference is usually $500–$1,500, but the alternative is a failed inspection and potential mold damage down the line. Chicago Heights' glacial soil and cold winters (frost depth 42 inches) also mean that water vapor condenses in the bathroom; proper exhaust ventilation (rated for the bathroom floor area) is not optional. If you skip the exhaust fan or undersized it, moisture will accumulate behind the waterproofing membrane and cause mold—a defect that will be discovered during a property sale inspection.

Electrical GFCI/AFCI compliance and common permit rejections in Chicago Heights

Chicago Heights enforces the 2020 NEC (adopted by Illinois), which requires GFCI protection on all bathroom receptacles within 6 feet of a sink, and AFCI (arc-fault) protection on all bathroom circuits, including lighting and exhaust fans. This is a point of significant confusion for both homeowners and contractors; many older homes have only GFCI protection on outlets, but not AFCI on the lighting circuit. The city's electrical inspectors will flag any bathroom electrical plan lacking AFCI notation on the lighting and exhaust-fan circuits. AFCI protection is provided by an AFCI circuit breaker in the main panel (covers the entire circuit) or by an AFCI outlet upstream of other outlets (covers only downstream outlets and lights). For a bathroom remodel, the most practical approach is to upgrade the relevant circuit breaker to AFCI in the panel; this costs $20–$50 per breaker and ensures the entire circuit is protected.

A second common rejection is undersized or missing GFCI circuits. If you're adding a vanity with two outlets, a toilet area outlet, and a heated towel rail, that's 4 receptacles on one circuit; if the circuit is not 20 amps, it will overload. The city requires a single 20-amp GFCI circuit for bathroom receptacles, or separate circuits if the load is high. Some older Chicago Heights homes have only 15-amp circuits; the inspector will catch this and require an upgrade to 20 amps. A third issue is GFCI location: the GFCI protection can be provided by a GFCI circuit breaker in the panel (simplest, protects all downstream outlets and fixtures) or a GFCI outlet installed first in the circuit (covers outlets downstream, but not upstream outlets or lights). Many homeowners install a GFCI outlet next to the sink but forget that the bathroom light circuit also needs AFCI; the city will require both.

If you're converting a 1950s or 1960s bathroom with knob-and-tube or aluminum wiring, the permit will require an electrician to replace those lines with modern copper or copper-clad cable. This is often a surprise cost ($1,000–$3,000) because the old wiring may run through walls and crawlspaces. The city's electrical inspector will not approve any work that leaves old knob-and-tube or aluminum wiring in place, even if it's not directly connected to the new bathroom circuits. Chicago Heights has a large inventory of mid-century homes with substandard wiring; when these homes come up for remodel or refinance, the electrical upgrade is often a deal-breaker or major expense.

City of Chicago Heights Building Department
Chicago Heights City Hall, Chicago Heights, IL (confirm exact address and suite via city website)
Phone: Contact Chicago Heights municipal office for Building Department direct line | https://www.chicagoheights.org (check for 'Permits' or 'Building' section; online portal link varies)
Monday–Friday, 8:00 AM–5:00 PM (typical municipal hours; confirm locally)

Common questions

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

No, replacing a toilet or vanity in the same location is typically exempt from permitting, as long as you're not relocating the drain or supply lines. However, if you're installing a new exhaust fan, even as part of a vanity swap, a permit is required. Also, if the old plumbing has lead solder or the home was built before 1978, lead-safe work practices apply during demolition.

What's the difference between a tub-to-shower conversion and just re-tiling a shower?

Re-tiling an existing shower in place (same fixtures, same walls) is typically exempt. Converting a tub to a shower (or shower to tub) requires a permit because you're changing the waterproofing assembly per IRC R702.4.2. The new waterproofing detail must be submitted with the permit application and approved before you begin tile work.

How long does plan review typically take in Chicago Heights?

Standard bathroom remodels with complete drawings take 7–14 business days for plan review. If you're relocating fixtures or submitting unclear drawings, plan on one resubmission cycle, adding another 7–10 days. Structural work (wall removal) adds 14–21 days for structural engineering review. Total timeline from submission to permit issuance is typically 3–4 weeks for routine work.

What happens if the city inspector finds asbestos or lead paint during my bathroom remodel?

If asbestos is suspected (common in pre-1980 homes), you must hire a licensed Illinois asbestos inspector to sample and assess before disturbing it. If confirmed, a licensed abatement contractor must remove it; this is a separate permit process. For lead paint, if your home was built before 1978 and you're disturbing painted surfaces, you must hire an EPA-certified renovator to manage containment and cleanup per lead-safe work practices. The city's inspector may ask for proof of certification on-site.

Can I do the work myself as an owner-builder, or do I need a licensed contractor?

Chicago Heights allows owner-builder work for owner-occupied residential properties; you can pull the permit yourself. However, all work must still pass rough-in and final inspections, and any licensed trades (electrician, plumber) must sign off on their work or you must perform the work within owner-builder exemptions (typically cosmetic finishes). Most homeowners hire licensed trades for plumbing and electrical rough-in and do the finishes themselves.

What's included in a rough-in inspection for a bathroom remodel?

A rough-in inspection checks plumbing trap slope (minimum 1/4 inch per 12 inches), trap-arm length (maximum 6 feet for a toilet unless wet-vented), vent routing and sizing, new water supply line, and electrical circuit rough-in (wire gauge, circuit breaker assignment, GFCI/AFCI labeling). Do not cover the trap arm, vent, or electrical wiring with drywall or insulation before rough-in inspection; the inspector must see all plumbing and electrical work exposed.

How much does a bathroom remodel permit cost in Chicago Heights?

Permit fees are typically 1.5–2% of the estimated project valuation. A modest vanity and fixture swap ($2,000–$4,000) costs $150–$250. A fixture relocation with shower conversion ($8,000–$15,000) costs $400–$700. Structural work (wall removal) adds $300–$500 for a structural-engineering permit. Always request a permit fee estimate from the city before submitting your application.

Can I have the shower waterproofed with drywall and a shower pan liner instead of cement board and membrane?

No. Chicago Heights enforces IRC R702.4.2, which prohibits drywall as a substrate for tile in wet areas; you must use cement board. The waterproofing can be a pre-fabricated fiberglass unit (no additional membrane) or a site-built tile system with cement board, membrane (4-mil poly or proprietary brand), and sealed grout. Drywall behind tile will fail the city's pre-waterproofing inspection.

What if my bathroom is in a basement or lower level?

Basement bathrooms require extra attention to drainage and moisture control. Your drain must slope away from the foundation at the required 1/4 inch per 12 inches; if the basement floor slab is below grade and you're running a drain, it must daylight or connect to a sump pump. Exhaust ventilation is mandatory and must duct outside (not to an attic or crawlspace). Chicago Heights' high water table in some areas makes basement moisture a common issue; the city's inspectors will be strict about trap slope and waterproofing compliance.

Do I need separate electrical and plumbing permits, or can I do them under one bathroom permit?

Chicago Heights requires separate permits for plumbing, electrical, and building/structural work. You'll submit a single application, but the fees and inspections are tracked separately. The plumbing inspector approves trap, vent, and drain work. The electrical inspector approves GFCI/AFCI circuits, wire sizing, and circuit-breaker assignments. Make sure your contractor or you submit all three applications together to avoid delays.

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 Chicago Heights Building Department before starting your project.

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