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

Morton Grove full bathroom remodel permits — the key details

The Illinois Building Code (2021 edition, adopted by Morton Grove in 2022) governs your bathroom remodel, and the threshold is simple: if you touch the plumbing, electrical, or structure, you need a permit. Per Illinois Building Code Section 3401.2 (based on IBC 2021), any alteration that affects the function or safety of a system — including moving a toilet drain, adding a new vent stack for a relocated shower, or installing a new circuit for exhaust or lighting — is classified as an alteration and requires a permit and plan review. Morton Grove does NOT allow unpermitted work to proceed, even for owner-occupied homes, though owner-builders can pull the permit themselves and perform the work (licensed contractors must sign off on some portions). The city's specific rule: you must submit a complete permit application, site plan showing the bathroom location and dimensions, and a mechanical/plumbing/electrical plan detail sheet showing fixture locations, trap-arm slopes, vent routing, drain sizes, and electrical layout before review begins. Unlike some Chicago suburbs that allow hand-drawn sketches, Morton Grove's Building Department requests scaled drawings or a detailed narrative with measurements and product specs (especially for shower waterproofing, GFCI placement, and exhaust termination). A typical full remodel — gut-and-rebuild with relocated plumbing and new electrical — costs $200–$600 in permit fees, calculated as a percentage of the declared valuation (usually 1.5–2% of the total project cost). Plan review takes 2–3 weeks on average; expedited review is not typically offered, but resubmission with corrections is usually faster (5–7 business days).

Plumbing code specifics matter heavily in a full remodel. The Illinois Building Code Section P2706 (trap requirements) mandates that every fixture drain must have a P-trap within a specific distance — no more than 24 inches for a toilet, 36 inches for sinks and tubs, and 60 inches for floor drains. If you're relocating a toilet from one wall to an island or opposite corner, the drain run and slope (minimum 1/4 inch per foot, maximum 3 inches per foot) must be shown on your plumbing plan, and the city's inspector will verify on rough plumbing inspection before walls close. Morton Grove sits at the northern edge of Cook County, where frost depth is 42 inches below grade — this matters if your home has a basement or sump system; any new drain below this line must slope toward an appropriate drain or sump. Many homeowners underestimate trap-arm length and attempt to use a long horizontal run without a vent — this fails inspection and requires rework, delaying the project 1–2 weeks. If you're moving a vent stack (the vertical pipe that allows the toilet and other fixtures to drain properly), the code requires the stack to terminate at least 4 feet above the roof surface and 10 feet away from any operable window or door per IRC M1601. A second unique Morton Grove requirement: the city's inspectors have documented preference for cast-iron or Schedule 40 PVC drain lines in existing homes (not ABS), citing durability and legacy compatibility — contractors using ABS sometimes receive requests to upgrade, so verify this with the city before design finalization.

Electrical code requirements in bathrooms are non-negotiable, and Morton Grove strictly enforces the National Electrical Code (NEC 2023, adopted via the Illinois Building Code). Per NEC 210.11(C)(1), bathroom branch circuits must be protected by a Ground Fault Circuit Interrupter (GFCI) — but Morton Grove's interpretation is stricter than some suburbs: EVERY outlet in the bathroom (including behind-vanity outlets and recessed light fixtures over the tub/shower) must be either GFCI-protected or on a GFCI-protected branch circuit. Your electrical plan must show GFCI breaker locations and wiring runs; many plan rejections stem from incomplete electrical layouts that don't label GFCI protection. Additionally, per NEC 210.8(A)(1), any outlet within 6 feet of a sink (including a half-bath) requires GFCI protection. If you're adding a new exhaust fan on a dedicated 15 or 20 amp circuit (common in full remodels), that circuit is separate from the lighting circuit and should not carry other loads. The city's inspectors perform a rough electrical inspection before drywall and a final inspection after trim and outlet cover plates. Permit applications that fail to specify exhaust fan amperage, duct termination location, or GFCI scheme are routinely rejected and sent back for revision — a single resubmission cycle can cost you 1–2 weeks.

Shower and tub waterproofing is a critical code point that Morton Grove's inspectors emphasize because water intrusion into bathroom framing is a major cause of structural and mold damage. The Illinois Building Code Section R702.4.2 requires that all shower and tub enclosures be waterproofed with a water-resistive membrane under tile, drywall, or other finish. The standard assembly in northern Illinois (Morton Grove's climate zone 5A) is cement board plus a liquid or sheet membrane, or schluter-type edge trim systems; some high-end approaches use Kerdi or similar synthetic membranes instead of cement board. Your permit application must specify which waterproofing method you'll use — if you write 'tile and grout' without naming the substrate or membrane, the city will reject the plan and ask for clarification. Once work starts, the rough framing and membrane inspection (before tile or final finish) is mandatory; inspectors will verify membrane coverage, sealing at penetrations, and proper sloping of pan drains. This inspection often reveals amateur work and forces rework, so hiring an experienced bathroom contractor (or a very thorough DIYer) is critical. The city does NOT permit tile-only waterproofing (grout is not waterproof) and will stop work if this is attempted.

Timeline and inspection sequence in Morton Grove: after permit approval, you can schedule a rough-framing inspection if walls are being moved, followed by rough-plumbing (when drains and vent stacks are in place but not yet covered), rough-electrical (wiring, boxes, GFCI breaker, exhaust fan rough-in), and rough-mechanical (if HVAC ducts are relocated). Many full remodels skip some of these if framing is existing and unchanged. Once all roughs are approved, drywall and waterproofing can proceed. A final inspection occurs after all fixtures are installed, tile is set, and outlets/switches are in place. Morton Grove's Building Department averages 3–5 business days between inspection request and inspection date; delays can stretch to 2 weeks if inspectors are backlogged. The entire permit-to-final cycle typically takes 6–10 weeks from permit pull to final sign-off, not counting any rework delays. Some contractors bundle multiple permit pulls (e.g., plumbing + electrical + building) to streamline the process, but Morton Grove requires a single unified permit application, not separate discipline permits. Owner-builders can pull this permit themselves but should expect the same review timeline as a licensed contractor.

Three Morton Grove bathroom remodel (full) scenarios

Why Morton Grove's online permit portal matters for your bathroom remodel timeline

Morton Grove has implemented an electronic permit portal (accessible via the city's website or through the Building Department's direct link) that prioritizes digital submissions over walk-in counter service. This is not standard across all Cook County suburbs — Niles and Skokie still process many applications in-person or via PDF email, which delays intake by 3–5 business days. Morton Grove's portal accepts PDF plan sets, application forms, and supporting documents (product spec sheets, manufacturer certifications for GFCI breakers or waterproofing materials) in a single upload, and the system automatically routes your application to the appropriate plan reviewer. Filing online typically results in initial intake within 24 hours and plan review assignment within 48 hours; in-person submissions are processed on a first-come, first-served basis and may sit in a queue for a day or two.

The portal also provides real-time status updates: you can log in and see your application status (under review, awaiting response, approved, approved with conditions, rejected). This transparency helps contractors and homeowners manage timelines. When the city requests revisions (common for incomplete electrical diagrams or missing waterproofing details), they upload a marked-up version of your plan with comments, and you can resubmit the revision directly through the portal within 5–7 business days; resubmission typically receives plan review within 5–7 business days. Compare this to in-person suburbs where revision cycles can stretch 2–3 weeks because you have to schedule an appointment to drop off corrected plans and wait for the next review slot.

Practical tip: have your contractor or designer prepare a complete, clearly labeled plan set (even if hand-drawn at to-scale with detailed callouts) before uploading. Incomplete submissions — missing GFCI breaker locations, unmarked vent routing, or undescribed waterproofing — trigger automatic rejection comments and restart the review clock. Morton Grove's reviewers provide detailed feedback, so pay close attention to their comments and address every point; partial revisions (e.g., correcting electrical but not touching plumbing) often result in a second rejection.

Frost depth, drain lines, and why northern Cook County bathroom remodels differ from downstate Illinois

Morton Grove sits in Cook County's northern zone (Chicago metro), where frost depth is 42 inches below grade — this is a critical detail if your home has a basement or sump system and you're relocating any drain lines. The Illinois Building Code references frost depth to determine the minimum depth at which drain lines must be buried; any drain line installed above the frost line is at risk of freezing in winter and breaking. If you're rerouting a toilet drain from a first-floor bathroom to a basement line, that basement line must slope toward a sump pit or main stack that exits below the frost line. Many homeowners and even some plumbers underestimate this requirement, install a short basement run at shallow depth, and discover frozen or burst pipes in January — a costly repair that could have been prevented by spec'ing proper depth at the permit stage. Your plumbing plan should note foundation/basement depth and confirm all drain lines below the frost line are sloped and protected from freezing (either by burial depth, insulation, or heat-tracing). Morton Grove's inspectors will verify this at rough plumbing inspection.

Contrast this with southern Illinois (e.g., Springfield, Carbondale), where frost depth is only 24–30 inches; remodelers downstate have less headroom and often use above-grade or insulated runs. Morton Grove's glacial-till soil (dense, low-permeability clay left by Ice Age glaciation) also affects drainage: it does not percolate quickly, so any sump pit or external drain line must be sized to handle water volume without overflow. Pre-remodel soil conditions and subsurface water are sometimes overlooked, leading to sump pit inadequacy after a major bathroom remodel that increases water load. A brief conversation with the city's Building Department about your home's basement drainage and frost considerations can prevent a design mistake that fails inspection.

If your home was built before 1995, ask the Building Department whether any historical freezing or drainage issues were documented. Older Morton Grove homes (1950s–1970s) sometimes have undersized or poorly sloped existing drains that cannot be relocated without substantial rework. Knowing this upfront allows your contractor to budget appropriately and design a compliant solution rather than discovering problems mid-project.

Common questions