Do I need a permit for a full bathroom remodel in
Cedar City, Utah?

Cedar City full bathroom remodel permits — the key details

Cedar City Building Department requires a permit for any bathroom remodel that involves fixture relocation, new electrical circuits, exhaust fan installation, tub-to-shower conversion, or wall movement. The threshold is straightforward: if you're touching plumbing drainage (moving a toilet, bathtub, or sink to a new location), adding circuits for lighting or ventilation fans, or installing a new exhaust duct, you need a permit. Per IRC M1505 (exhaust fan ventilation), Cedar City requires all bathrooms to have mechanical ventilation (or a window operable to at least 5% of room area), and any new exhaust installation must terminate outside the building envelope with a damper — the city's inspectors are strict about duct runs that terminate into attics or crawlspaces, which have been rejected in past submissions. Surface-only work — replacing a faucet in the same location, re-tiling a shower wall without moving the drain, swapping out a vanity cabinet without relocating plumbing — is exempt and requires no permit. The distinction hinges on whether the rough-in (plumbing and electrical behind the walls and under the floor) changes. If your remodel keeps every fixture in its current location and you're only changing finishes, handles, and cabinet style, you can skip the permit; if you're moving anything or adding new circuits, you're in permit territory.

Cedar City Building Department application process is a hybrid intake: you can submit online through the city's permit portal with PDF floor plans, a scope statement, and contractor name (or owner-builder declaration) during business hours (Mon-Fri 8 AM-5 PM, verify current hours at 435-586-6656). The city charges a permit fee calculated as 1.5-2% of the estimated project cost, plus a $50–$100 base fee; a typical full bathroom remodel ($15,000–$25,000) generates a permit fee of $275–$550. Plan review takes 5-7 business days on average. Cedar City's staff are responsive to code questions and will flag issues (such as trap-arm length exceeding 6 feet on a relocated toilet drain, or GFCI outlet placement conflicts) in the review comments before you buy materials — this is a best-practice that saves money versus discovering rejections during inspection. Once you've paid and the permit is stamped, you're authorized to begin work. You'll schedule three to four inspections: rough plumbing (after all drain/supply lines are run but before walls are closed), rough electrical (after wiring is in place), framing (if walls were moved), and final (after all finishes). Each inspection must be approved before moving to the next stage; the city allows online request for inspections through the portal, and inspectors typically respond within 1-2 business days.

Waterproofing and shower/tub assembly requirements are a frequent source of rejections in Cedar City remodels. IRC R702.4.2 requires a continuous moisture barrier (cement board with waterproofing membrane, or pre-fabricated shower pan, or equivalent) on all surfaces in the shower or tub enclosure that are subject to spray or splash. Cedar City inspectors require you to specify the waterproofing system on your permit drawings: are you using cement board + liquid membrane, a Schluter or Kerdi system, or a traditional mud pan? If the remodel includes a tub-to-shower conversion (or vice versa), the waterproofing assembly changes, and the city requires a detailed section drawing showing the base, membrane, and wall treatment. Bathtubs converted to showers are especially common in Cedar City (older homes with aging tubs), and inspectors will reject any application that doesn't detail the shower pan installation (sloped floor, proper drain placement, dam/curb height). Pressure-balanced mixing valves are required on all tubs and showers (per IRC P2708) to prevent scalding; Cedar City inspectors will call this out if your fixture schedule doesn't specify it. This is not negotiable and costs $50–$200 depending on the valve model, so budget for it upfront.

Electrical code for bathrooms in Cedar City is strict. All outlets in a bathroom must be on a 20-amp circuit (IRC E3901), and all outlets within 6 feet of a sink, tub, or shower require GFCI protection (IRC E3902). If your remodel adds a second vanity, relocates a toilet, or installs a heated floor mat, you're likely adding new circuits. Cedar City Building Department requires a one-line electrical diagram showing the panel, new circuit breakers, wire gauge, and outlet locations with GFCI notation. If you're using a licensed electrician (recommended for most homeowners), the electrician will typically submit the electrical plan and pull a companion electrical permit; if you're owner-building, you'll need to coordinate with an electrician or designer to produce the required drawings. Bathroom exhaust fans are mandatory (per IRC M1505) and must duct outside, not into the attic; Cedar City inspectors verify duct termination during the rough-in inspection. If you're installing a new exhaust fan, the permit application should include duct size (typically 4 inches for standard fans, 6 inches for high-CFM units) and termination location (roof, gable wall, or soffit). Cedar City's moderate altitude (elevation ~5,600 feet) and elevation variations require ductwork to be properly sized — undersized ducts are a common issue and will be flagged.

Timeline and inspection logistics in Cedar City are faster than many Utah counties but require coordination. From permit submission to first inspection is typically 10-15 business days (5-7 for plan review, 3-5 to schedule and conduct rough plumbing). If the city has comments, resubmission and second review add 5-7 more days. Total duration from permit issuance to final sign-off is usually 4-6 weeks if work is sequenced correctly and inspections pass on the first attempt. Cedar City Building Department allows owner-builders to pull permits for owner-occupied single-family homes, which can save contractor fees; however, owner-builders must still pass all inspections and comply with code in every detail. If you're unpermitted, the cost to obtain a retroactive permit (required for sale or refinance) is roughly 1.5-2x the original permit fee plus any rework costs if code violations are found. Cedar City inspectors are professional and knowledgeable; calling ahead with specific questions about your remodel plan (trap-arm length, exhaust termination, waterproofing detail) often prevents rejections.

Three Cedar City bathroom remodel (full) scenarios

Cedar City's strict exhaust fan and duct requirements

Cedar City Building Department enforces IRC M1505 (exhaust fan ventilation) with particular rigor because older homes in the city often lack proper bathroom ventilation, leading to moisture and mold issues in the dry, sunny climate. Every bathroom must have either a mechanical exhaust fan vented outside or an operable window (5% of room floor area minimum). New exhaust installations are common in full remodels, and Cedar City's inspectors will reject any duct that terminates into the attic, crawlspace, or garage; the fan must exhaust to the outside air, typically via a roof, gable wall, or soffit vent. Duct sizing is critical: a standard bathroom (80-100 CFM) uses 4-inch ductwork, but if you're combining a toilet and shower area (high humidity), or if the duct run exceeds 25 feet, you may need 6-inch ductwork or a higher-CFM fan. Cedar City's elevation (5,600+ feet) doesn't change the code requirement, but undersized ducts are flagged during inspection.

The duct termination itself must include a damper (automatic or manual) to prevent cold air backflow during winter — Cedar City gets snow and freezing temperatures in winter months, and homes without dampers develop condensation and ice buildup in ducts, which the city has documented as a problem in post-inspection follow-ups. During the rough-in inspection, the city's inspector visually verifies the duct routing and termination location; if the duct is not yet installed, the inspector will note this as a deficiency and schedule a second rough-in check after ductwork is complete. Many homeowners underestimate this step and schedule final inspection before the exhaust duct is installed, causing delays. Budget for the ductwork, damper, and roof/wall termination kit ($200–$400) in your remodel estimate.

If your home is on a hillside or canyon lot near Kolob Canyons (east side of Cedar City), wind exposure may affect duct termination placement — Cedar City's zoning code encourages terminations on the leeward side of the roof to reduce wind-driven moisture intrusion. This is not a hard-code requirement but is noted in inspector guidance. If your lot is especially exposed, ask the building department before finalizing the duct location.

Waterproofing and shower assembly detail in Cedar City remodels

Cedar City Building Department requires detailed shower waterproofing specifications because the dry climate and seasonal freeze-thaw cycle create unique moisture risks. IRC R702.4.2 mandates a continuous moisture barrier (membrane) on all surfaces subject to spray in a shower or tub enclosure. The most common systems accepted by Cedar City inspectors are: (1) cement board substrate with liquid-applied waterproofing membrane (Redgard, Hydroban, or equivalent), (2) pre-formed waterproof panels (Schluter, Kerdi, Wedi), or (3) traditional mud pan with liner. Cement board + membrane is the most cost-effective ($25–$50 per square foot of tile) and most predictable for inspection approval. If you're using a pre-formed panel system, provide the manufacturer's documentation and installation instructions to the city during permit review — Cedar City has rejected some newer systems in the past because inspectors wanted verification of code compliance, so having documentation upfront prevents delays.

The shower base and pan installation is a second critical detail. Cedar City requires a sloped floor (minimum 1/4 inch per foot toward the drain) and a waterproof pan liner or mortar base underneath the tile. If you're converting a bathtub to a shower, the new drain location must be centered in the shower footprint (minimum 12 inches from any wall) to ensure water doesn't puddle against the perimeter — Cedar City's inspector will measure this during rough-in inspection and reject off-center drains. If the shower has a curb or threshold, the curb height must be between 2-4 inches (per Cedar City accessibility guidance, though this is not strictly required in a private residence, many newer homes prefer consistency). The membrane must extend 12 inches above the highest water exposure on each wall — some older Cedar City homes have experienced mold from insufficiently extended membranes, and inspectors now photograph the membrane installation during rough-in before drywall closure.

One additional consideration: if your shower includes a recessed niche (shelf) for soap/shampoo bottles, the niche cavity itself must be lined with waterproofing membrane — this is a detail that many contractors miss and Cedar City inspectors catch during drywall inspection. Budget an extra $50–$100 for a waterproofed niche if you're planning one, and ensure the membrane overlaps the niche opening by at least 3 inches to prevent water infiltration behind the tile.

Common questions