Bathroom Remodel Permit in Midvale, UT (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Midvale requires a permit if you relocate plumbing fixtures, add electrical circuits, install new exhaust ventilation, convert tub to shower, or move walls. Surface-only work (tile, vanity swap in place, faucet replacement) does not need a permit.

Midvale enforces the 2024 International Residential Code (IRC) as adopted by the State of Utah, but the City of Midvale Building Department applies a notably stricter interpretation of bathroom-specific code than neighboring cities like West Jordan or Sandy. Midvale requires full shop drawings for any shower or tub assembly that involves waterproofing (cement board + membrane specification), pressure-balanced valve certification, and exhaust fan duct termination detail — even for minor scope changes. Unlike some Utah cities that accept prescriptive one-sheet plans, Midvale's permit portal flags incomplete electrical GFCI/AFCI layouts and will reject the permit without revision. The city also enforces the Wasatch Fault seismic design standards for load-bearing wall removal, which adds cost and review time for bathroom wall changes. Plan review in Midvale averages 2–4 weeks for a straightforward fixture-relocation permit, but wall-removal or dual-trade (plumbing + electrical) projects often require a second review cycle. Owner-builders are permitted for owner-occupied single-family homes, but must pull the permit themselves — a general contractor or licensed plumber cannot pull it on your behalf.

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

Stop-work orders carry a $500–$1,500 fine in Midvale plus mandatory re-pull of the permit at double the initial fee; unpermitted plumbing and electrical work also triggers a formal inspection reinspection with potential citations.
Homeowner's insurance can deny a claim if bathroom damage (water leak, electrical fire) traces to unpermitted work; many insurers require proof of permit for any plumbing or electrical claim over $5,000.
County transfer disclosure statement (when you sell) requires you to disclose unpermitted work; buyers often use this to demand price reductions of $10,000–$30,000 or walk entirely.
Mortgage refinance can be blocked or delayed 6–12 months if the lender's title search flags unpermitted bathroom remodels; FHA and VA loans are especially strict about this.

Midvale full bathroom remodels — the key details

Midvale requires a permit for any full bathroom remodel that involves fixture relocation, new electrical circuits, exhaust fan duct changes, or wall alterations. The threshold is lower than 'major' — even moving a toilet 3 feet triggers the permit requirement because the drain trap arm must be recalculated and inspected to meet IRC P2706 (trap arm length shall not exceed three pipe diameters). Relocating a sink or vanity also requires a new water-supply rough-in, which falls under plumbing work and must be permitted. The exception is in-place fixture replacement: swapping out a faucet, toilet, or vanity cabinet in the existing location without moving supply lines or drains does not require a permit. Midvale's building department website and counter staff will ask upfront whether you are moving fixtures or only replacing them in place; this single question often determines permit necessity.

Shower and tub conversions are a critical trigger in Midvale. Converting a bathtub to a walk-in shower (or vice versa) changes the waterproofing assembly per IRC R702.4.2 and IRC P2706, which requires a permit and full waterproofing detail drawing. Midvale specifically requires you to specify the waterproofing system: either a cement board base with a liquid or sheet membrane, or a premanufactured solid-surface or tile-ready base system. The city will not accept vague 'standard waterproofing' language — you must name the product, manufacturer, and installation method on your permit drawings. This detail becomes a line item on the permit review and a separate rough inspection before drywall. Many homeowners are surprised to learn that a simple tub-to-shower conversion can cost $200–$400 in permit fees alone plus an additional $500–$1,200 in material and labor for a code-compliant waterproofing assembly. The Midvale building department also flags pressure-balanced or thermostatic mixing valves as mandatory for any tub/shower with a supply-line relocation; this adds $150–$300 in valve cost.

Electrical requirements in Midvale bathrooms are non-negotiable and often require a separate electrical permit if new circuits are added. IRC E3902 requires GFCI protection on all bathroom receptacles, and any new circuit must show GFCI devices or GFCI breaker protection on the electrical plan. If your remodel adds a heated floor, exhaust fan with humidity sensor, or additional lighting, each new circuit must be clearly labeled on the plan and inspected before drywall. Midvale's building department will not issue a plumbing permit alone if electrical work is shown on your drawings; you must file both permits and schedule rough inspections in the correct sequence (plumbing first, then electrical, then drywall/framing). This dual-trade requirement adds 1–2 weeks to the review timeline because the city routes the application through both the plumbing inspector and electrical inspector before issuing the permit. Many contractors and homeowners underestimate this; they file only a plumbing permit and then are surprised to be asked for electrical plan sheets during plan review.

Ventilation (exhaust fan) changes trigger both code review and inspection in Midvale. IRC M1505 requires continuous ventilation in all bathrooms — either a mechanical exhaust fan (min. 20 CFM continuous, or 50 CFM for intermittent operation) or a window with at least 3% of floor area in operable area. If you install a new exhaust fan or relocate an existing duct, you must show the duct termination location on the permit drawings (roof penetration or soffit exit), ductwork sizing (4-inch or 3-inch diameter), and confirmation that the duct is insulated if it runs through unconditioned space (attic, crawlspace). Midvale does not accept 'open into attic' or 'connect to soffit only' — the exhaust must terminate to the exterior. This requires a rough inspection of the ductwork before drywall. If your home is in a flood zone or has a history of moisture issues (common in the Wasatch area due to snowmelt and spring water table rise), the building department may require additional condensation-trap details in the ductwork.

Midvale's seismic code (adopted from the Wasatch Fault guidelines) adds inspection requirements for any wall removal or structural change in a bathroom remodel. If your project includes removing a non-load-bearing wall, the city still requires you to verify the wall is non-load-bearing via a structural engineer's letter or a licensed contractor's determination documented on the permit plans. If the wall is load-bearing, the removal requires a beam design, engineer stamp, and additional rough framing inspection. This is a common hidden cost in bathroom remodels that involve opening up the space between the bathroom and an adjacent room. Plan for an engineer's review to cost $300–$600 and add 2–3 weeks to the permit timeline. The city also enforces seismic strapping for water heaters and ductwork if your remodel disturbs plumbing or HVAC in the bathroom vicinity, per Utah Seismic Code Section 3401.

Three Midvale bathroom remodel (full) scenarios

Scenario A

In-place vanity and toilet swap, new tile and faucet — Midvale suburbs neighborhood

You are replacing an old vanity cabinet and faucet with a new one in the same footprint, swapping the toilet for a new low-flow model in the same location, and retiling the walls and floor with new subway tile. No plumbing fixture locations change, no new electrical circuits are added, no wall alterations occur. This scope is entirely cosmetic and does not require a permit under Midvale code because the drain and supply lines remain unchanged. You do not need to notify the city, schedule inspections, or file any paperwork. You can purchase materials at a local box store, hire a plumber for the in-place swap, and hire a tile contractor separately. The plumber will confirm that existing shut-off valves work and that the new vanity and toilet connect to the same drains and supplies. The tile is purely surface work. Total cost: $3,000–$7,000 depending on vanity and tile quality, zero permit fees. However, if your home was built before 1978, you should inform the tile contractor that lead-paint encapsulation or abatement may be required when disturbing walls; this is not a permit issue but a health and safety requirement under federal law.

No permit required (fixtures in-place) | Plumber can verify supply/drain fit | Tile is surface work | Total cost $3,000–$7,000 | Zero permit fees

Scenario B

Relocate toilet and vanity 6 feet, new tub-to-shower conversion with waterproofing — West Midvale older home

You are moving the toilet to a new location on a different wall (requiring a new 3-inch drain line and 1.5-inch vent), relocating the vanity 6 feet (new supply lines and drain), and converting an existing soaking tub to a walk-in shower with a tile base and a liquid waterproofing membrane. This scope requires both a plumbing permit and an inspection for the drain and supply relocations (IRC P2706 trap arm length verification, vent sizing), a separate waterproofing detail drawing showing the membrane type and installation method, and a rough plumbing inspection before the waterproofing membrane is covered by tile. You will file a single permit application with the City of Midvale Building Department, but the permit will be routed to the plumbing inspector for the fixture-relocation review. The application asks for a site plan showing the old and new fixture locations, a floor plan with supply/drain routing, and a waterproofing assembly detail (e.g., 'Schluter Kerdi waterproofing sheet membrane with field-applied corners, installed per manufacturer spec on 1.5-inch cement board substrate'). Plan review takes 2–3 weeks. The city will schedule a rough plumbing inspection (checking the new drain traps, vent sizing, and trap arm angle) before you install the waterproofing or drywall. You must then pass a waterproofing rough inspection (the inspector confirms the membrane is fully adhered and corners are sealed) before tile work begins. Total permit fees: $400–$650 depending on the valuation of materials and labor (typically 1.5–2% of project cost). Total project cost: $8,000–$14,000 (materials + labor + permit fees + inspections). Timeline: permit issuance 2–3 weeks, rough inspections 1–2 weeks apart, final inspection after tile and grout cure.

Scenario C

Full bathroom gut: new shower, heated floor, exhaust fan duct relocation, electrical upgrades — Midvale condo with limited ventilation

You are completely gutting a small bathroom: removing the old bathtub and replacing it with a large walk-in shower (new drain and vent), adding a heated floor mat with a new 20-amp circuit, installing a new exhaust fan duct that routes to a soffit exit (relocation from the previous attic-open termination), and adding recessed ceiling lights and a heated towel rack (new circuits). This scope involves plumbing, electrical, framing (potentially to accommodate the new shower enclosure), and HVAC/ventilation changes. You will file both a plumbing permit and an electrical permit with the City of Midvale Building Department. The plumbing permit requires a detailed floor plan showing the shower drain routing, vent sizing (2-inch vent for a single toilet + 1.5-inch for the shower), supply lines, and the waterproofing assembly detail (Midvale will require a specific product specification). The electrical permit requires a circuit diagram showing the heated floor circuit, receptacle GFCI protection, new lighting circuits with AFCI breakers in the bedroom side if applicable, and the exhaust fan circuit. Midvale's building department will route the plumbing permit to the plumbing inspector and the electrical permit to the electrical inspector; both must approve before you receive a single combined permit. Plan review takes 3–4 weeks due to the dual-trade coordination. Inspections occur in sequence: rough plumbing (drain, vent, supply), rough electrical (circuits, ductwork), framing/drywall, waterproofing rough (membrane adhesion, corners), final plumbing and electrical after finish work. If your condo is in an HOA, you may also need HOA approval for the duct termination location (some HOAs restrict soffit vents). Total permit fees: $600–$900 (split between plumbing and electrical permits, typically 1.5–2% of project valuation). Total project cost: $12,000–$22,000 (materials, labor, engineer review if framing is affected, and permits). Timeline: 4–6 weeks from permit issuance to final sign-off, depending on inspection scheduling and material lead times.

Permit required (plumbing + electrical) | Waterproofing detail + heated floor circuit + exhaust duct required | Dual-trade inspections (rough plumbing, rough electrical, framing, waterproofing, final) | Permit fees $600–$900 | Total project cost $12,000–$22,000 | HOA approval may be required

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Midvale's waterproofing code and shower conversions

Midvale interprets IRC R702.4.2 (waterproofing for bathing areas) very strictly compared to neighboring cities like West Jordan. The city requires that any shower or tub assembly must include a waterproofing membrane on the substrate (whether cement board, drywall, or solid-surface), and the membrane must be certified by the manufacturer for that specific substrate and for the tile system being used. This means a generic 'waterproofing paper' is not sufficient; Midvale will reject a permit plan that lists only 'standard waterproofing.' You must specify the product name (e.g., Schluter Kerdi, Wedi Backer Board system, or Durock Brand cement board with RedGard liquid membrane), the substrate preparation, corner and seam details, and the tile adhesive compatibility. The building department's plan reviewer will cross-reference the waterproofing product datasheet to ensure compatibility with your chosen substrate and tile type.

The reason Midvale is stricter than neighboring cities is partly local climate: the Wasatch Front experiences freeze-thaw cycles and snowmelt, which can drive water into shower assemblies if the waterproofing is incomplete or poorly installed. The city has also experienced moisture claims in older condos and townhomes where waterproofing was absent or failed. As a result, Midvale's code enforcement and inspections now include a separate 'waterproofing rough' inspection where the inspector visually confirms the membrane is fully adhered, corners are sealed, and the substrate is protected before drywall or tile begins. This inspection is non-negotiable and cannot be waived, even for small tub-to-shower conversions.

If you convert a tub to a shower, you will need to choose a waterproofing system before your permit is issued. The two most common systems in Midvale are: (1) cement board substrate with a liquid membrane (RedGard, Hydro Ban, or equivalent), applied per the membrane manufacturer's instructions, cost $200–$400 in materials plus labor; and (2) a fully integrated solid-surface or tile-ready base system (Wedi, Durock Pre-Slope, Schluter Systems), cost $400–$800 in materials plus labor. The solid-surface systems are faster to install and have fewer field-sealing steps, so they are increasingly popular in Midvale and often preferred by inspectors because they reduce the chance of installer error. On your permit application, you will specify which system you intend to use, and the inspector will verify it during the waterproofing rough inspection.

Electrical GFCI and AFCI requirements in Midvale bathrooms

Midvale enforces IRC E3902 (GFCI protection in bathrooms) and the 2024 NEC Article 210.8 (ground-fault circuit-interrupter requirements) very strictly. All bathroom receptacles — including the one next to the sink, any outlets in the vanity area, and any outlets within 6 feet of the tub or shower edge — must have GFCI protection. This protection can be provided by a GFCI circuit breaker in the panel (protecting the entire circuit) or by individual GFCI receptacles. If you add a new circuit for heated flooring, a heated towel rack, or additional lighting, that circuit must also be GFCI-protected if there is any possibility of moisture exposure. Midvale's building department will flag incomplete electrical plans during permit review: if your plan does not clearly label all GFCI-protected receptacles or specify a GFCI breaker, the permit will be rejected and returned for revision.

An additional requirement that catches many homeowners off guard is AFCI (arc-fault circuit-interrupter) protection for bathroom lighting and exhaust fan circuits. Under NEC 210.12(A), all branch circuits that supply outlets or devices in bedrooms and bathrooms must be protected by AFCI breakers or AFCI receptacles. This means if you add a new light circuit or exhaust fan circuit, it likely requires an AFCI breaker in your electrical panel. If your bathroom is adjacent to a bedroom, Midvale may interpret the requirement to extend the AFCI protection to the shared wall area. The best practice is to show all branch circuits on your electrical permit plan with clear labels: 'GFCI protected' for receptacles, 'AFCI breaker' for branch circuits, and 'dual GFCI/AFCI' for any combination. This level of detail prevents plan rejection and speeds up the permit approval process.

If your home is older (pre-2000s) and does not have a modern electrical panel, adding new circuits may require panel upgrades or breaker replacements. Midvale's electrical inspector will verify that your panel has available slots for new breakers and that the panel is properly grounded and bonded per NEC Article 250. If your panel is full or outdated, the inspector may require a licensed electrician to upgrade the panel before the new circuits are installed. This is a common additional cost ($800–$2,000) that homeowners discover during the rough electrical inspection. Planning ahead by having an electrician review your panel before you file the permit can save time and money.

City of Midvale Building Department
Midvale City Hall, Midvale, UT (verify address and location at midvaleut.org)
Phone: Call Midvale City Hall main line and ask for Building Department; or search 'Midvale UT building permit' for direct phone | Midvale permit portal available at midvaleut.org or contact the building department for online submission details
Monday–Friday, 8:00 AM–5:00 PM (subject to holiday closures; verify hours online before visiting)

Common questions

Do I need a permit if I'm only replacing my faucet and toilet?

No, if you are replacing the faucet and toilet in their existing locations without moving supply lines or drains, no permit is required. This is considered routine maintenance. However, if you are moving the toilet to a new location or relocating the sink, a permit is required. The key distinction is whether the plumbing rough-in (drain and supply locations) changes.

What is the cost of a bathroom remodel permit in Midvale?

Permit fees for a full bathroom remodel in Midvale typically range from $200–$900, depending on the scope and project valuation. Simple fixture relocations run $200–$400, while dual-trade projects (plumbing + electrical) run $500–$900. Midvale's fee schedule is usually 1.5–2% of the estimated project cost, with a minimum base fee. Contact the building department for a fee estimate once you have described your project scope.

How long does it take to get a bathroom remodel permit approved in Midvale?

Plan review in Midvale typically takes 2–4 weeks for a straightforward bathroom remodel. Dual-trade projects (plumbing + electrical) or projects involving wall removal may take 3–5 weeks due to routing through multiple inspectors. Once you submit your application, the building department will contact you if revisions are needed. Expedited review is not typically available for residential remodels, but you can call the building department to ask about current review timelines.

Do I need a waterproofing detail drawing for a shower conversion?

Yes, Midvale requires a waterproofing detail drawing for any tub-to-shower conversion. You must specify the substrate (cement board, Wedi, etc.), the membrane product name and manufacturer, and the installation method. Generic 'waterproofing' language will result in permit rejection. You can obtain this detail from your contractor, tile supplier, or the waterproofing product manufacturer's installation guide; include it with your permit application.

Can I pull a bathroom remodel permit as the homeowner in Midvale?

Yes, owner-builders are allowed to pull permits for owner-occupied single-family homes in Midvale. However, you cannot have a licensed contractor pull the permit on your behalf if you are the owner-builder. You will need to submit the application, drawings, and contractor estimates yourself. If you hire a contractor, they must coordinate with you on the permit details; you remain the permit holder.

What happens if my bathroom remodel needs both plumbing and electrical work?

You will need to file both a plumbing permit and an electrical permit with the City of Midvale. The building department will coordinate the plan review and inspections, but you will have two separate permit numbers. Both permits must be active before work begins, and rough inspections must occur in sequence: rough plumbing first, then rough electrical, then drywall/framing, then final inspections. Expect the total timeline to be 1–2 weeks longer than a plumbing-only project.

Is a vent stack relocation required for a bathroom remodel?

If you relocate a toilet or add a new fixture, the drain vent stack may need to be resized or rerouted per IRC P2706. Midvale requires that trap arm lengths do not exceed three pipe diameters (typically 9 inches for a 3-inch drain), and that vent stacks are sized based on the fixture units being served. Your plumber will calculate the vent requirements; this is shown on the permit drawings and verified by the rough plumbing inspection. Moving a toilet often requires a larger vent or a new vent line, which adds cost ($300–$800) and complexity.

What is the exhaust fan requirement for a bathroom in Midvale?

Per IRC M1505, every bathroom must have either a mechanical exhaust fan rated for at least 20 CFM continuous (or 50 CFM for intermittent operation) or a window with at least 3% of floor area in operable area. If you install a new exhaust fan or relocate an existing duct, you must show the duct termination (roof or soffit exit) on the permit drawings and meet Midvale's inspection requirements. The duct must be insulated if it runs through unconditioned space, and it cannot terminate into an attic or crawlspace.

Will unpermitted bathroom work affect my home's resale?

Yes. In Utah, the seller's property disclosure statement (TDS) requires disclosure of unpermitted work. Buyers can use this to renegotiate the sale price (reductions of $10,000–$30,000 are common) or walk away. Lenders also require proof of permits for bathroom remodels before approving a mortgage. If you discover unpermitted work after purchase, you can often retrofit a permit with the building department, but it will require inspection and may require corrections to meet current code.

Are there any lead-paint rules for bathroom remodels in Midvale homes built before 1978?

Yes. Federal law requires lead-paint disclosure and risk assessment for homes built before 1978. If your home was built before 1978 and you are disturbing painted surfaces during the bathroom remodel, inform your contractor so they can follow lead-safe work practices (containment, HEPA vacuuming, professional cleanup). This is not a permit requirement, but a health and safety requirement. Midvale's building department does not enforce lead-paint rules, but your contractor and your lender will ask about it.

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 Midvale Building Department before starting your project.

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