Do I need a permit for a full bathroom remodel in
Bixby, Oklahoma?

Bixby full bathroom remodel permits — the key details

Bixby requires a permit for any bathroom remodel that involves moving fixtures, adding circuits, installing exhaust ventilation, or altering framing. The threshold is straightforward: if water, waste, vent, or electrical lines are relocated or extended, you need a permit. If you are simply replacing a vanity in its existing location, retiling existing walls, or swapping out a faucet without touching supply or drain lines, no permit is required — this surfaces-only exemption covers about 20% of 'full bathroom' jobs that homeowners think need permits but don't. The City of Bixby Building Department has one combined application (unlike some larger metro areas that split plumbing, electrical, and HVAC). Your permit fee is typically $250–$600, based on project valuation; the city charges a base fee plus 1.5% of estimated construction cost. Valuation is self-reported on the application, but inspectors will push back if you under-report — a typical $15,000 full gut will trigger a $225–$300 fee.

The code requirements that trip up most homeowners are waterproofing, GFCI outlets, exhaust fans, and trap-arm length. Under IRC R702.4.2 (adopted by Oklahoma code), any new shower or tub enclosure must have a waterproofing assembly — typically cement board plus polyethylene membrane or liquid-applied barrier. Bixby inspectors require this to be specified on submitted plans; a photo or product data sheet alone is not sufficient. GFCI protection is mandatory on all bathroom outlet circuits per IRC E3902; if you are adding a new circuit or circuit breaker, the electrical plan must show GFCI breaker or GFCI outlet placement — failure to show this is a common plan-rejection reason. For exhaust ventilation, IRC M1505 requires 50–100 CFM continuous or 20 minutes per use; if you are installing a new fan, ductwork must terminate outdoors (not into attic or soffit), and Bixby inspectors will request duct sizing and termination point on plans. If you are relocating the drain line from the toilet or shower, the trap arm (horizontal pipe between trap and vent stack) cannot exceed 6 feet or 1.5 times the pipe diameter — Oklahoma code enforces this strictly because expansive clay soils in the Bixby area (Permian Red Bed formation) shift seasonally, and improper slope or excessive arm length causes siphoning and gurgling. Request your plumber to call out all trap-arm lengths on the plan.

Exemptions exist for cosmetic work and in-place fixture swaps. A full list from the Bixby code office includes: retiling existing shower or tub walls (no waterproofing upgrade); replacing a toilet, sink, or faucet without relocating supply or drain; vanity replacement in the same footprint; painting, caulking, or minor drywall patch (not structural framing); and light fixture swap. However, if you touch the water supply line (moving the shower valve, for instance), that is considered a plumbing alteration and requires a permit. The gray area is converting an existing tub to a shower: if the existing shower pan drain is being reused and only the surround is being re-tiled, some inspectors call this cosmetic; but if a new precast or custom shower base is being installed (changing the drain assembly), a permit is required because waterproofing assembly changes. Bixby Building Department's FAQ explicitly states that 'tub-to-shower conversion with any change to the drainage assembly requires plumbing permit; tub-to-shower surround only does not.' Get this in writing from the permit office before you start if the conversion is your main concern.

Lead-paint rules apply to all pre-1978 Bixby homes. If your house was built before 1978 and you are disturbing painted surfaces (sanding trim, removing medicine cabinets, pulling fixtures), Oklahoma law (and federal EPA rule) require a lead-hazard notice to the homeowner and, if a contractor is hired, EPA-RRP certification. Many Bixby contractors are RRP-certified, but some smaller outfits are not. Verify certification before hiring; if a non-certified contractor disturbs paint in a pre-1978 home, you (the owner) are liable for the violation, not the contractor. The fine is up to $16,000 per violation. Lead testing or clearance is not required by Bixby code itself, but the disclosure and contractor certification are mandatory — this is a federal rule that overrides local code.

Plan submission typically includes a one-page bathroom layout (floor plan with fixture locations, supply and drain lines, vent routing), an electrical plan (if adding circuits, showing panel location, new breaker, GFCI placement, outlet locations), and a product spec sheet or photo for the waterproofing system (if new shower/tub). Bixby's online portal accepts PDF uploads; most homeowners and contractors upload a simple hand-drawn floor plan plus electrician's one-liner and plumber's riser diagram. Plan review takes 2–4 weeks. Once approved, inspections are typically rough plumbing (after drain and vent lines are in, before drywall), rough electrical (wiring and boxes, before drywall), and final (after all finishes, before occupancy). If you are not moving walls or changing framing, the framing inspection is often waived. Many contractors do not pull a formal permit for purely cosmetic work, but this is a gray area — Bixby Code Enforcement does spot-check neighborhoods and has issued citations for unpermitted plumbing or electrical in bathroom remodels.

Three Bixby bathroom remodel (full) scenarios

Waterproofing and drainage in Bixby bathrooms — why the code is strict

Bixby sits on Permian Red Bed clay, an expansive soil that swells when wet and shrinks when dry. This seasonal movement causes foundation settling and can crack drain lines if they are not properly sloped and supported. Oklahoma's adoption of the IRC includes strict enforcement of IRC P2706 (drainage fittings) and P2704 (trap slope). Any relocated drain line in a Bixby bathroom must have a minimum 1/4-inch-per-foot slope toward the main stack, and the trap arm (from trap to vent connection) cannot exceed 6 feet or 1.5 times the pipe diameter. Your plumber may push back on a tight layout — if the new toilet is far from the existing vent stack, a new vent line may be required, adding $800–$1,500 and extra wall framing. Get a site visit and slope calculation before finalizing the design.

Shower waterproofing is equally critical. Bixby's inspectors enforce IRC R702.4.2, which requires a continuous barrier (membrane or liquid-applied sealant) under the tile assembly in shower enclosures. The code does not specify the exact method — cement board plus polyethylene membrane is traditional; liquid-applied membranes and pre-fabricated waterproofing mats are also compliant. However, Bixby's plan-review checklist explicitly asks for the waterproofing system to be named (not just 'standard waterproofing'). Specify on your permit application: 'cement board + 4-mil polyethylene membrane per ASTM D4601' or 'Schluter Kerdi membrane system' or equivalent. If your plans do not name the system, expect a plan-rejection email asking for clarification. This delays approval by 1–2 weeks.

The expansive-clay issue also affects how inspectors evaluate bathtub or shower bases. If the existing shower pan is more than 15 years old, it has likely shifted slightly due to soil settlement. Installing a new shower base on an uneven floor can cause water to pool — inspectors will require the subfloor to be shimmed and leveled before the new base is set. Budget $500–$1,000 for subfloor prep if the floor is uneven. Bixby's inspector will check this at rough-in inspection by looking for proper shimming and a level reading across the pan.

GFCI, AFCI, and electrical circuit requirements in Bixby bathrooms

Every outlet in a Bixby bathroom must be GFCI-protected per IRC E3902. This is true whether the outlet is for a hair dryer, exhaust fan, heated floor, or mirror lighting. Older homes often have bathroom outlets that are not GFCI-protected; when you are pulling a permit for any bathroom work that touches the electrical circuit (adding a new exhaust fan, for example), you must upgrade existing unprotected outlets to GFCI or install a GFCI breaker in the panel. The cheapest way is a GFCI breaker ($60–$100) protecting the entire bathroom circuit; installing individual GFCI outlets costs $150–$250 per outlet but is more flexible if different circuits serve different areas. Bixby's inspection checklist requires the electrical plan to call out GFCI protection — a simple note 'all bathroom outlets protected by 20A GFCI breaker' is sufficient. Many contractors miss this and fail plan review.

If you are adding new circuits (as in Scenario C), you must also verify that your electrical panel has capacity. A typical 200-amp residential panel in a 2005 home has 20–40 amp-hours of available breaker space. If the panel is full, a sub-panel may be required ($1,500–$2,500). Bixby inspectors will ask for a photo of the panel label showing available breaker slots. This is not always caught at permit submission, but electricians should check before starting rough-in to avoid rework.

AFCI (arc-fault circuit interrupter) protection is required by the 2015 IBC for all branch circuits in bedrooms and living areas, but bathrooms are typically exempt — GFCI is the standard. However, if your bathroom is part of a combined bath-bedroom space or if new wiring is being run through a bedroom to reach the bathroom, AFCI breakers may be required for those runs. This is rarely an issue in Bixby homes but worth confirming with your electrician on older homes with attic wiring.

Common questions