Do I need a permit for a full bathroom remodel in
Leawood, Kansas?

Leawood bathroom remodel permits — the key details

Leawood Building Department requires a permit for any bathroom remodel that involves plumbing relocation, new electrical circuits, exhaust fan installation or duct rerouting, or wall removal/structural changes. The threshold is clearer than in some Kansas cities: if you are touching the drain line, the vent stack, the water supply line, or any wall stud, you need a permit. If you are only swapping out a vanity cabinet, replacing a faucet in-place, or re-tiling existing walls without moving the drain pan, no permit is required. However, converting a bathtub to a shower (or vice versa) always requires a permit because it changes the waterproofing assembly under IRC R702.4.2 — the drain location, trap configuration, and membrane system must be reviewed and inspected. Most "full" bathroom remodels include at least one of these trigger items, so most full remodels do need permits in Leawood.

The Leawood Building Department's electrical requirements for bathrooms are strict and worth reviewing before design. All bathroom outlets within 6 feet of a sink or tub must be on a 20-amp GFCI-protected circuit per NEC 210.8(A)(1); if you are adding new circuits or relocating the outlet bank, you must show this on an electrical plan (or Leawood's inspectors will red-tag the rough electrical inspection). Many remodelers miss the requirement that exhaust fans must be wired to a separate circuit or at minimum not daisy-chained to a lighting circuit — Leawood's checklist specifically calls this out. The exhaust fan duct must terminate outside the building envelope, not in an attic or unconditioned space, per IRC M1505.2; plan must show duct routing and termination (soffit vent, wall cap, or roof penetration with flashing). Leawood's online permit checklist, available on their portal, lists these items explicitly, so print it before you design.

Plumbing relocation in a bathroom remodel must follow several code rules that Leawood inspectors enforce carefully. First, the trap arm (the section of drain line from the fixture trap to the vent stack) cannot exceed 3 feet in length per IRC P3105.1, and the slope must be 1/4 inch per foot downward toward the stack. If you are moving a toilet or sink, the new drain line must be sized appropriately (typically 3-inch for toilet, 1.5-inch for sink) and the vent stack must be within code distance from the trap. Pressure-balanced or thermostatic mixing valves are not strictly required by code in Kansas, but Leawood inspectors often flag single-control faucets that do not have anti-scald protection in plans — showing a specified mixing valve in your fixture schedule avoids a red-tag. Water supply lines must be protected from freezing; in Kansas zone 5A (northern Leawood), all supply lines in exterior walls or unheated spaces must be insulated or routed inside conditioned space. Leawood's frost depth is 36 inches, so any water meter or main shut-off shown on a site plan must be below grade (not relevant to interior bathroom, but relevant if your permit package includes site utilities).

Waterproofing for tub-shower conversions or new shower installations is where Leawood's permit office diverges noticeably from neighboring cities. Instead of waiting until the inspection to see how you waterproofed, Leawood requires the waterproofing method to be stated in writing on your permit application or on a specification sheet submitted with plans. Options include: cement board (1/2-inch minimum) plus liquid membrane (two coats, 40 mils wet), or a pre-fabricated shower pan system, or tile backer board approved by the manufacturer. Fiberglass shower surrounds (one-piece units) are acceptable if they are factory-sealed and installed per manufacturer. Many DIYers and some contractors assume they can choose the method during construction — Leawood will not approve a permit without this detail locked in, so coordinate with your tile contractor or shower-pan installer before you submit. Tub-to-shower conversions also require a drain pan and slope verification (1/4 inch per foot toward drain); if the existing drain is not in the ideal location for the new shower, you may need to relocate it (which adds cost and complexity).

The permit and inspection timeline in Leawood is reasonable if you have your paperwork in order. Online submission (via the Leawood permit portal) typically results in 2–3 business days to a first review; if the application is complete and plans are clear, you may get approval in one round. If there are deficiencies (missing checklist items, unclear waterproofing spec, no electrical plan), you will receive an email with a list of corrections and a 10-day window to resubmit. Inspections are scheduled as you proceed: rough plumbing (after drain and vent lines are installed but before walls close), rough electrical (after circuits and GFCI outlets are in, before drywall), and final (after all finishes are in place). If you are not moving walls or structural members, the framing inspection is often waived. Most bathroom remodels take 2–4 weeks from permit approval to final inspection, depending on contractor schedule and any rework needed. Permit fees are based on project valuation: a $15,000 remodel is typically $250–$350; a $25,000 remodel is $400–$600; a $40,000+ remodel is $600–$800. Fees are non-refundable if you decide not to proceed.

Three Leawood bathroom remodel (full) scenarios

Leawood's waterproofing checklist and tub-to-shower conversions

Tub-to-shower conversions are the most commonly red-flagged bathroom remodel in Leawood because the waterproofing system change requires upfront specification. When you convert a bathtub (which comes with an integral pan and surround) to a shower, you are responsible for creating a waterproof assembly that meets IRC R702.4.2. Leawood's Building Department requires this assembly to be described in writing before plan approval — not after framing is up. The three main options are: (1) cement board (1/2-inch minimum, ASTM C1288) plus a liquid-applied membrane (40 mils wet, two coats, covering all substrate seams and penetrations); (2) a prefabricated shower pan system (such as acrylic or fiberglass with pre-formed curb and drain); or (3) a tile backer board (such as DensShield, which has an integral moisture barrier). Leawood will not issue a final inspection if the waterproofing product is not identified in the permit paperwork.

The membrane application is the typical weak point. Many DIYers apply paint-on waterproofing without sealing seams or running it up the wall sufficiently; Leawood inspectors require documentation of membrane coverage (photos, product receipt, application notes). If you are hiring a tile contractor, ask them to provide a waterproofing specification sheet signed off on; include it with your permit application. Liquid membrane products (such as Hydro Ban, Redgard, or Kerdi) must be applied over a stable substrate (cement board) and extended 6 inches above the shower rim or 6 inches above the highest splash zone per manufacturer instructions. Leawood's inspectors also check that the drain pan itself is sloped properly (1/4 inch per foot toward the drain) and that the tile is set over the membrane with thin-set mortar (not dry-pack or silicone, which is not waterproofing). This is a detail that shows up in final inspection, but documenting the system upfront avoids delays.

If you are using a one-piece fiberglass or acrylic surround with a factory-integrated pan, the waterproofing is already built in; you do not need additional membrane. These surrounds are acceptable to Leawood inspectors, but you must install them per the manufacturer's installation manual (not jury-rigged with sealant). Prefab shower pans (such as Schluter-Curbed or Schluter-Ramp systems) are also pre-waterproofed and often easier to inspect because the system is tested and documented. Cost difference: cement board + membrane is typically $300–$600 in materials and labor; a prefab pan system is $600–$1,500; a fiberglass surround is $400–$1,000. The permit office does not care which system you choose, only that it is specified in advance and installed correctly.

Electrical GFCI and AFCI requirements in Leawood bathroom remodels

Leawood's electrical inspection for bathroom remodels focuses on two critical requirements: GFCI (ground-fault circuit interrupter) protection and adequate circuit capacity. All bathroom receptacles within 6 feet of a sink or bathtub must be on a 20-amp GFCI-protected circuit per NEC 210.8(A)(1), which applies whether you are adding new outlets or remodeling existing ones. The GFCI can be a breaker in the panel (protecting the entire circuit) or an outlet (protecting downstream outlets on the circuit). Leawood's electrical inspectors red-tag bathrooms where GFCI protection is missing or where an undersized 15-amp circuit is protecting a bathroom outlet. If you are adding new circuits (common in full remodels), you must run a 20-amp circuit; do not reuse a 15-amp circuit from an old kitchen or dining room circuit for a bathroom outlet.

A second requirement, less obvious but enforceable, is that bathroom exhaust fans must be on a dedicated circuit or at minimum not daisy-chained with lighting. Some older homes have one 15-amp circuit powering a light, receptacle, and exhaust fan; Leawood's current code (based on 2015 NEC) does not explicitly forbid this, but the Building Department's checklist recommends a separate circuit for the exhaust fan to avoid nuisance GFCI trips (which occur when multiple loads operate together). If you are installing a new exhaust fan as part of a remodel, wire it to its own 15-amp circuit; this avoids inspection red-tags and reduces the risk of nuisance tripping during high-humidity conditions (showers). The circuit must be wired with 12 AWG copper wire (not 14 AWG), and the switch must be within the bathroom or at a location convenient to the bathroom per NEC 404.4.

A third detail: AFCI (arc-fault circuit interrupter) protection is required for all branch circuits in bedrooms per NEC 210.12, but bathrooms are explicitly exempted from bedroom AFCI rules. However, if your bathroom is an add-on and you are extending a bedroom circuit to feed a bathroom receptacle, that circuit must be AFCI-protected. This is a subtle rule that trips up some contractors; the safe approach is to use a 20-amp GFCI breaker in the panel (which protects against both ground faults and arcing) and avoid mixing AFCI and GFCI on the same branch if possible. Leawood's electrical inspectors are experienced with this rule; submit a clear electrical plan showing all circuits, wire sizes, and GFCI/AFCI details before the rough electrical inspection to avoid delays.

Common questions