Bathroom Remodel Permit in Lee S Summit, MO (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Lee's Summit requires a permit if you're relocating fixtures, adding electrical circuits, installing a new exhaust fan, converting tub to shower, or moving walls. Surface-only work (tile, vanity replacement in place, faucet swap) is exempt.

Lee's Summit, unlike many smaller Missouri municipalities, maintains its own building department with a formal plan-review process and online permit portal — you cannot simply call in a verbal approval or walk in with a sketch. The city enforces the 2021 IRC with local amendments around moisture barriers and GFCI protection that are stricter than the state minimum. If your remodel involves any fixture relocation, new circuits, or tub-to-shower conversion, you'll file through the Lee's Summit portal, expect 2-3 weeks for plan review (longer if the electrical or plumbing layout is complex), and pay permit fees of $300–$600 depending on the valuation of materials and labor. The city's building official can issue corrections via email, which speeds turnaround — but missing exhaust-fan duct routing or shower waterproofing details on your first submission is common and adds a week. Owner-builders can pull permits for owner-occupied single-family homes, which saves contractor markup but requires you to attend all required inspections.

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

Stop-work order issued by Lee's Summit Building Department carries a $250–$500 fine, plus you'll owe double permit fees when you finally pull the permit to get it legal.
Insurance claim denied: if a water leak or electrical fire occurs post-remodel and the insurer discovers unpermitted work, you'll be liable for repair costs — often $10,000–$50,000 on bathroom damage.
Resale disclosure obligation: Missouri law requires disclosure of unpermitted alterations; buyers can void contracts or demand $5,000–$15,000 escrow holdback.
Lender or refinance block: if you refinance or take out a construction loan later, unpermitted structural or electrical work can kill the deal entirely.

Lee's Summit full bathroom remodel permits — the key details

Lee's Summit enforces the 2021 International Residential Code (IRC) with local amendments adopted in the city's Building Code (Title 6, Chapter 604). The baseline rule is simple: any work that changes drainage, electrical load, ventilation, or structural walls requires a permit. This means relocating a toilet, moving the shower, adding a ceiling exhaust fan, installing new circuits for a heated mirror or GFCI outlet, or removing/moving walls all trigger a permit requirement. The city's online permit portal (accessible through the Lee's Summit municipal website) allows you to upload plans, pay fees, and track review status. Plan review typically takes 2-3 weeks if your submission is complete; if waterproofing assembly details, exhaust-fan termination routing, or electrical GFCI/AFCI labeling is missing, expect a correction notice and another 5-7 business days.

Waterproofing is the single most-cited correction in Lee's Summit bathroom remodels, especially tub-to-shower conversions. IRC R702.4.2 requires a moisture barrier and drainage system behind all tile walls in a shower; the code does not specify cement board plus polyethylene, but Lee's Summit's building official will ask you to specify your system on the permit application (e.g., 'cement board per ANSI A118.9 plus 4-mil polyethylene membrane with drains at pan' or 'KERDI-BOARD assembly per Schluter-SYSTEMS'). Rough plumbing inspection happens before drywall; do not drywall over drains or trap arms without city sign-off. Trap arm length from fixture to vent is governed by IRC P3103: a toilet trap arm cannot exceed 6 feet horizontal, and the arm slope must be 1/4 inch per foot. Lee's Summit inspectors measure this on-site and will flag violations. If you are relocating the toilet and the waste line runs more than 6 feet horizontally before entering a vent, you'll need either a island vent or a wet vent — plan for that in your plumbing design.

Electrical work in a bathroom triggers both GFCI and AFCI requirements per NEC 210.12(B) and IRC E3902. Every outlet within 6 feet of a sink or tub must be GFCI-protected; Lee's Summit requires this protection shown explicitly on your electrical plan submission. If you're adding new circuits (e.g., for a heated floor, towel warmer, or exhaust fan with humidity sensor), those circuits must be on a dedicated breaker and GFCI-protected at the outlet or breaker. Exhaust fans must be ducted to the exterior per IRC M1505.2; the duct cannot terminate into the attic or soffit. Lee's Summit inspectors will request a photo or site plan showing the duct route and exterior termination point — 'vented to attic' will fail and require correction. Ductless or recirculating fans do not meet code and will not pass inspection.

Lee's Summit's permit valuation for a full bathroom remodel is typically based on material + labor estimate. A remodel with fixture relocation, new tile, lighting, and vanity generally values at $8,000–$25,000, resulting in permit fees of $250–$600 (roughly 2-3% of valuation). The city accepts payment online via the portal. Inspections are required at framing/rough-in (plumbing and electrical together), final drywall if walls are moved, and final (all fixtures, trim, surfaces complete). If you are an owner-builder, you must be present at all inspections; if you hire a licensed contractor, the contractor can schedule and attend on your behalf, but the building department prefers the owner present at final. Typical timeline from permit issuance to final inspection is 3-6 weeks for a straightforward remodel; complex layouts or multiple corrections can extend this to 8-10 weeks.

Lead-paint disclosure: if your home was built before 1978, federal law (42 U.S.C. Section 4852d) requires you to provide a lead-paint disclosure before the contractor begins work. Lee's Summit does not enforce this directly, but lenders and title companies will; failure to disclose can result in civil penalties up to $16,000 per violation. When you apply for your permit, mention the build date to the building official so they can flag lead-safe work practices in the approval letter. Contractor insurance and licensing: Lee's Summit requires plumbers and electricians to be licensed in Missouri; verify your contractor's license number with the Department of Commerce and Insurance before signing a contract. Unlicensed work will not pass inspection and you'll be liable for cost of correction.

Three Lee's Summit bathroom remodel (full) scenarios

Scenario A

Vanity and toilet swap in place, new tile floor, existing shower untouched — Lee's Summit ranch home

You're keeping the toilet and sink drains in their current locations, just swapping the vanity cabinet and replacing the floor tile with new substrate. No new electrical circuits, no fixture relocation, no wall moves, no vent changes. This is surface work only and is exempt from permitting under Lee's Summit code. You can hire a handyman, tile contractor, or do it yourself without pulling a permit. However, the moment you remove the old vanity, verify that the existing drain/supply lines are not damaged; if they crack or develop a slow leak post-remodel, you may be liable for water damage regardless of permit status. Timeline is 3-5 days. Costs are material only: vanity ($200–$800), tile ($1,000–$2,500), labor if hired ($1,000–$2,000). No permit fees. Note: if you are replacing the toilet flange or re-setting the toilet on a new wax ring, that's still in-place fixture work and does not require a permit.

No permit required (surface work only) | Pre-work photo of drain and supply recommended | Tile floor substrate per IRC R702 | Total $2,200–$5,300 | No permit fees

Scenario B

Relocate toilet to opposite wall, new soaking tub to shower conversion, full tile, new exhaust duct — older Lee's Summit bathroom

You're gutting the bathroom: moving the toilet 8 feet to the opposite wall, converting the tub to a walk-in shower with a new waterproofing assembly, installing a new exhaust fan duct to the exterior, and re-tiling walls and floor. This triggers permits on all fronts: plumbing (fixture relocation, drain trap arm check), electrical (GFCI outlets, exhaust fan circuit), and potentially framing if you're removing/moving walls. File through Lee's Summit's online portal with plans showing: (1) plumbing layout with trap arm length and vent routing, (2) electrical plan with GFCI protection marked for all outlets, (3) waterproofing assembly detail (e.g., KERDI-BOARD or cement board + membrane with routing/drainage), (4) exhaust duct routing and exterior termination. Expect plan review to take 3 weeks. Rough plumbing inspection occurs once the toilet and shower drains are roughed in; rough electrical inspection follows. Framing inspection if walls are moved. Final drywall if applicable. Total inspections: 4-5. Lee's Summit's building official will likely issue one correction notice (commonly: missing exhaust-duct termination detail or shower waterproofing specification not detailed enough). Resubmit, and allow another 5-7 days for approval. Total timeline: 4-6 weeks from permit to final inspection. Costs: materials ($8,000–$18,000), labor ($3,000–$8,000), permits ($350–$550), inspections included. Valuation for permit purposes is typically $11,000–$26,000, driving fees to mid-range.

Scenario C

Small half-bath addition off kitchen, new toilet and sink, new GFCI circuit — owner-builder

You're adding a new 4x5 half-bath to your home; this is technically a new bathroom (not a remodel of existing) and follows a different permit path, but the electrical and plumbing requirements overlap with a full remodel. This requires a permit for both plumbing (new waste line, vent, supply) and electrical (dedicated GFCI circuit, lighting). As an owner-builder in Lee's Summit, you can pull the permit for your owner-occupied home, but you must handle all framing, rough plumbing, and rough electrical — or hire licensed contractors for those. Lee's Summit will require a site plan showing the addition location, flood zone check (if applicable), and proof that the addition does not exceed 10% of the home's existing footprint or does not change the setback/lot coverage. File through the online portal with plumbing and electrical schematics. Plan review takes 2-3 weeks. Rough framing inspection, rough plumbing inspection, rough electrical inspection, final. You (the owner) must attend all inspections. If you hire licensed plumber and electrician, they attend the rough inspections and you attend final. Timeline: 5-8 weeks. Costs: framing/materials ($4,000–$8,000), plumbing ($1,500–$3,000), electrical ($800–$1,500), permits ($250–$400). Owner-builder permit fee is the same as hiring a contractor, so no cost savings on the permit itself — but you save contractor markup on labor.

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Lee's Summit's moisture and exhaust-fan rules: why they matter in bathroom remodels

Lee's Summit sits in IECC Climate Zone 4A, with average winter lows near 15°F and significant humidity during spring/summer. The city's building official has observed moisture damage in older bathrooms where exhaust fans were either absent, undersized, or improperly ducted; as a result, the city strictly enforces IRC M1505 (exhaust ventilation). Exhaust fans must be sized for at least 1 CFM per square foot of bathroom floor area, minimum 50 CFM. A typical 40-square-foot bathroom requires a 50 CFM fan; a 100-square-foot master bath requires 100 CFM. Undersizing is a common mistake and will fail inspection.

The duct must be rigid or semi-rigid (not flex duct, which traps moisture), run to the exterior per IRC M1505.2, and terminate with a backdraft damper. Ducting into the attic, soffit, or crawlspace violates code and Lee's Summit will require correction at no permit cost but with a work-stop until fixed. If you're installing a humidity-sensing exhaust fan (which turns on automatically when humidity exceeds a threshold), that's a good idea in Lee's Summit's climate, but the fan must still be hard-ducted to exterior — recirculating filters do not meet code.

For shower waterproofing, IRC R702.4.2 specifies that all shower surfaces must have a moisture barrier and drainage. Lee's Summit requires this detail explicitly on your permit plan. Acceptable assemblies include: (1) cement board per ANSI A118.9 plus 4-6 mil polyethylene membrane, with weep holes or drainage board behind the tile; (2) KERDI-BOARD or Schluter-SYSTEMS KERDI assembly with pre-integrated waterproofing; (3) sheet-membrane systems like Redguard or Noble Seal. Do not propose drywall + paint or drywall + waterproof primer — these fail Lee's Summit inspection because they do not provide a true drainage plane. Submit a photo or technical spec of the waterproofing product on your permit application.

Lee's Summit permit portal and inspection scheduling: how to avoid delays

Lee's Summit's online permit portal (accessible through the city website) is a hybrid system: you upload plans and pay fees online, but you must call the building department to schedule rough and final inspections. The portal displays your permit number, review status, and any correction notices. Once approved, the city issues a digital permit; print it and post it at the job site as required by IRC R106.4. Many applicants submit incomplete plans expecting the building official to chase down missing details — this causes delays. Before uploading, verify that your electrical plan clearly labels every outlet and circuit as GFCI-protected if within 6 feet of water. Verify that plumbing plans show trap-arm lengths (measured horizontally from fixture drain to vent) and confirm they do not exceed code maximums (toilet 6 feet, sink/shower 5 feet per IRC P3103). Verify that tub-to-shower conversions include a waterproofing assembly detail with product name and installation specification.

Inspection scheduling: Lee's Summit's building department operates Monday-Friday, 8 AM-5 PM. Call the main number (confirm via the city website; phone numbers change) to schedule rough plumbing, rough electrical, and final inspections. Inspections typically occur within 24-48 hours of scheduling. Rough inspections are brief (15-30 minutes): the inspector verifies that plumbing drains are routed correctly, electrical circuits are roughed per plan, exhaust duct is in place, and framing is sound. Do not cover drains or seal walls before rough inspection. Final inspection is more thorough (30-60 minutes): inspector checks fixture installation, GFCI outlet operation (using a test button), exhaust fan duct termination, tile and waterproofing detail (may open a small section if not confident), and surface finishes. Bring your permit and be present.

Common rejection points: missing exhaust-duct detail (25% of remodels), inadequate shower waterproofing specification (20%), trap-arm length exceeding code (15%), GFCI protection not shown on electrical plan (15%), unlicensed plumber or electrician (10%). If you correct and resubmit, plan review takes another 5-7 days. Schedule rough inspections only after you've received final approval and are ready to rough in.

City of Lee's Summit Building Department
City Hall, Lee's Summit, Missouri (check city website for exact street address and suite number)
Phone: See Lee's Summit municipal website for current phone number | Lee's Summit permit portal accessible via City of Lee's Summit municipal website
Monday-Friday, 8 AM-5 PM (verify current hours on city website)

Common questions

Do I need a permit if I'm just replacing my vanity and faucet in the same location?

No. Replacing a vanity, faucet, or toilet in the same location without moving drains or supply lines is surface work and exempt from permitting. If the existing plumbing is damaged during removal, repair it in place and you still do not need a permit. However, if your existing vanity does not have GFCI-protected outlets and the new vanity will have outlets, those outlets must be GFCI-protected; you can install a GFCI outlet or GFCI circuit breaker without a permit as long as you do not relocate the outlet location.

What exactly counts as a 'fixture relocation' in Lee's Summit?

Any change to where a plumbing fixture's drain or supply line connects to the home's main system requires a permit. Moving a toilet, sink, or shower to a different wall or location is a relocation. Moving a toilet 3 feet forward or backward on the same wall is also a relocation. Even if the new drain uses the existing vent pipe, the reconfiguration of the trap arm (the horizontal run from the fixture to the vent) must be inspected. The exception: if you disconnect a fixture, cap the drain/supply, and reconnect an identical fixture in the exact same spot, that's a swap and exempt.

Can I install a new exhaust fan without a permit?

Only if the fan duct is entirely within the attic and terminates into the soffit or through the roof without a proper exterior vent. That configuration violates code and will fail future inspections. If you are properly ducting the fan to the exterior with a backdraft damper, you need a permit to show the duct routing and fan CFM rating on a plan. Most contractors bundle the exhaust fan permit into the overall bathroom remodel permit, so the incremental cost is minimal.

Lee's Summit requires GFCI outlets in bathrooms — do I need a GFCI outlet or a GFCI breaker?

Either. You can install individual GFCI outlets at each outlet location within 6 feet of a sink or tub, or you can install a GFCI circuit breaker on the entire bathroom circuit. A GFCI breaker protects the whole circuit; individual GFCI outlets protect specific outlets and allow you to use standard outlets downstream. For a remodel, GFCI outlets are more flexible if you're upgrading one area. The permit plan must show which strategy you're using so the inspector knows what to test.

How long do I have to wait for a permit after I submit?

Lee's Summit's building department aims for 2-3 weeks plan review if your submission is complete. If you submit incomplete plans (e.g., missing waterproofing detail or exhaust-duct routing), expect a correction notice and another 5-7 days after resubmission. Rough inspections are scheduled within 24-48 hours of your call to the building department. Final inspection is typically within 1 week of substantial completion. Total project timeline from permit to final is usually 4-8 weeks, depending on scope and whether corrections are needed.

Can I pull my own permit as an owner-builder in Lee's Summit?

Yes, for a full bathroom remodel on an owner-occupied single-family home, you can pull your own permit. You must attend all inspections. If you hire licensed trades (plumber, electrician), they will attend rough inspections but you must be present at final. Unpermitted work or work by unlicensed trades on a permitted project will fail inspection. Owner-builder permits are not cheaper than contractor permits — you pay the same fee — but you save the contractor markup on labor.

What happens if Lee's Summit finds unpermitted bathroom work during an inspection for something else (e.g., kitchen remodel)?

The building inspector will issue a correction notice requiring you to either demolish the unpermitted work or pull a retroactive permit and pay double fees. If the work violates code (e.g., improper exhaust ducting, no GFCI protection), you'll be required to bring it up to code at your expense. If the work is safe and compliant, you may be able to pull a late permit and pay a penalty fee. Either way, expect the process to delay your other project.

Does a tub-to-shower conversion always require a permit in Lee's Summit?

Yes. Converting a tub to a shower changes the waterproofing assembly, the drainage system, and the valve configuration. IRC R702.4.2 requires the waterproofing detail to be specified and inspected. Even if you keep the drain in the same location, the new shower pan and tile assembly require a moisture barrier, which must be shown on the permit plan. You cannot convert a tub to a shower without a permit.

What is Lee's Summit's frost depth and does it affect a bathroom remodel?

Lee's Summit's frost depth is 30 inches. This affects foundation drains and exterior plumbing, not interior bathroom remodels. However, if your remodel includes adding an exterior shower or relocating an exterior hose bib, the supply line must be buried below 30 inches or insulated to prevent freezing. For a standard interior bathroom, frost depth does not apply.

Do I need to disclose unpermitted bathroom work when I sell my home in Missouri?

Yes. Missouri property disclosure law (Mo. Rev. Stat. Section 424.2-105) requires sellers to disclose all known defects and unpermitted alterations. Unpermitted bathroom work is a defect that must be disclosed. Failure to disclose can result in buyer rescission, damages, or civil suit. Even if the work is quality, buyers expect to see permits, and inspectors will flag unpermitted work. It's cheaper and faster to permit the work during the remodel than to deal with disclosure issues at sale.

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 Lee's Summit Building Department before starting your project.

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