Bathroom Remodel Permit in Pullman, WA (2026)

Research by DoINeedAPermit Research Team · Updated May 2026

The Short Answer

A full bathroom remodel in Pullman requires a permit if you relocate any plumbing fixture, add new electrical circuits, install a new exhaust fan, convert a tub to shower, or move walls. Surface-only work — replacing a toilet, vanity, or faucet in place — is exempt.

Pullman's adoption of the 2021 International Building Code (IBC) means bathroom remodels triggering any of these changes demand a permit filed with the City of Pullman Building Department: fixture relocation (including trap-arm distance compliance to 42 inches under IRC P2706), new electrical circuits (GFCI/AFCI requirements under IRC E3902), exhaust ventilation ducting, or structural changes. What sets Pullman apart from nearby cities like Moscow, Idaho is its strict enforcement of waterproofing documentation — Pullman plan reviewers specifically flag missing shower pan membrane specs and improper cement-board installation per IRC R702.4.2, delaying approvals by 1-2 weeks if the detail sheet isn't explicit. The city's online permit portal (available through the Pullman municipal website) accepts digital submissions, but plan reviewers often request a phone call to confirm duct termination routing before approval — a quirk that saves rejection cycles if you call ahead. Frost depth in Pullman ranges 12-30 inches depending on location; this doesn't trigger remodel-specific rules but does matter if you're replacing radiant floor systems or underslab drains. Owner-builders are allowed for owner-occupied homes, but mechanical (HVAC), electrical, and plumbing work still require licensed contractors or owner-builder exemption cards for those trades in Washington state — a difference from some neighboring jurisdictions.

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

Stop-work orders can halt your project mid-frame, costing $500–$1,500 in fines plus mandatory permit re-pulls at double the standard fee rate ($400–$1,600 total catch-up cost).
Pullman's city lien attachment authority lets contractors and inspectors file against your property if unpermitted work creates code violations, blocking refinances and title transfers until resolved ($2,000–$8,000 legal cleanup).
Home insurance may deny water-damage claims if the unpermitted bathroom remodel is found to be the origin point, leaving you with $10,000–$50,000+ in repair costs on your own dime.
Selling your home triggers mandatory disclosure of any unpermitted work; buyers often demand the work be permitted retroactively or deduct 15-25% from the offer price ($20,000–$75,000 loss on a $300,000 home).

Pullman bathroom remodels — the key details

Pullman requires a permit for any bathroom remodel that involves moving a toilet, sink, shower, or tub to a new location, or that adds new plumbing lines. The IRC P2706 standard governs drainage-fitting slopes (1/4 inch per foot minimum) and trap-arm length (42 inches maximum from trap to stack), and Pullman's plan reviewers enforce this strictly — if your relocated toilet's drain line runs 50 inches from the P-trap to the main stack, you'll get a correction request. Similarly, any work that adds an electrical circuit, installs a new exhaust fan, or relocates existing outlets requires a permit. The IRC E3902 rule mandates GFCI protection on all branch circuits serving bathroom receptacles, and Pullman reviewers cross-check the electrical plan against the floor layout to ensure compliance. Exhaust fans must be ducted to the exterior per IRC M1505 (6-inch ductwork minimum, insulated in Pullman's climate zone 4C/5B, termination not into an attic or crawl space). If you're converting a bathtub to a shower or vice versa, the permit is required because the waterproofing assembly changes — Pullman specifically requires that shower pan waterproofing be documented with a product-data sheet and installation sequence photo, a detail that delays many approvals by one review cycle if omitted. Structural changes — moving load-bearing walls, removing a wall to enlarge the bathroom, or adding a soffit for plumbing routing — all require framing plan review and may require a structural engineer's stamp if the wall is bearing.

Pullman's Building Department uses a hybrid review process: permits filed online via the city's portal go to a plan reviewer for a standard 2-5 week review window, but the reviewer may request a phone conversation to clarify duct routing, waterproofing details, or electrical layout before issuing approval. This is different from some neighboring cities that issue conditional approvals; Pullman tends to require clarity upfront. The application fee is typically $150–$400 depending on the project valuation (estimated cost of work). Pullman calculates valuation as the total cost of materials and labor; a gut bathroom remodel in a typical Pullman home (1,500-2,000 sq ft, modest finishes) runs $15,000–$40,000, placing most projects in the $250–$350 permit fee range. You'll need a floor plan showing the new layout, a plumbing riser diagram if fixtures are moving, an electrical plan with GFCI locations marked, and a detail sheet for the shower waterproofing system (cement board + membrane type, or an alternative assembly). Licensed contractors in Washington state must pull the permit; owner-builders may obtain an exemption card from Washington's Department of Labor & Industries, but the bathroom permit still goes through Pullman's Building Department, not through L&I directly.

Inspections for a full bathroom remodel in Pullman typically occur at three stages: rough plumbing (before walls close, checking trap sizing, vent routing, and P-trap location), rough electrical (verifying GFCI circuit installation and outlet boxes), and final (after tile, fixtures, and trim are installed). If you're moving walls, you may also have a framing inspection. The rough inspections are the gatekeeper steps — if your plumber's trap-arm length is wrong or the ductwork isn't insulated, the inspector will red-tag the work, and you'll have 10-15 days to correct it before the next inspection. Pullman's inspection turnaround is typically 2-3 business days; you call to request an inspection after your contractor notifies you that the stage is ready. Final inspection is often a walk-through to confirm fixtures are code-compliant (pressure-balanced tub/shower valves per IRC P2903, for instance) and the exhaust fan is properly ducted. If your home was built before 1978, Pullman will flag the project as Lead-Based Paint Disclosure-required; you'll need to provide tenants or buyers with an EPA brochure and 10-day inspection window, adding time but not cost to the permit process.

Bathroom waterproofing is the most common re-review issue in Pullman. The IRC R702.4.2 standard requires continuous waterproofing behind shower and tub enclosures; Pullman's plan reviewers expect to see either a cement-board + liquid-applied membrane system or a pre-formed waterproof panel assembly (like Kerdi or Schluter) with a detailed installation sequence. If your plans just say 'waterproof the shower,' the reviewer will request a product data sheet and installation photo showing the membrane extending at least 6 inches above the tub rim and 6 inches beyond the tub surround. Cementitious backer board (Durock, HardieBacker) alone is not a waterproofing assembly — it still requires a membrane. This detail is often overlooked by contractors unfamiliar with Pullman's review standards, so calling the Building Department early to confirm your shower detail saves a rejection cycle.

Owner-builders in Pullman can pull bathroom permits for owner-occupied homes, but Washington state law requires licensed contractors for plumbing and electrical work unless the owner holds L&I exemption cards for those trades. Many Pullman homeowners hire a licensed plumber and electrician for those rough-in stages, then do finish work (tile, paint, trim) as the owner-builder. This approach keeps the permit valid and lets you control costs on lower-risk finishes. If you're planning to do all the work yourself, contact L&I's L&I Contractor Registration office (360-902-5800) to confirm exemption card eligibility before you pull the permit — Pullman's reviewers will ask to see evidence of exemption during plan review, and having it in hand speeds approval by a week or more.

Three Pullman bathroom remodel (full) scenarios

Scenario A

Relocating toilet and sink to opposite wall, new exhaust fan, Sunnyside neighborhood ranch (all plumbing/electrical moves)

You're gutting a 1950s bathroom in a Sunnyside ranch and moving the toilet from the east wall to the north wall, and the sink from the south wall to the east wall. This triggers mandatory permit review because the plumbing trap-arms will be entirely new, and Pullman's code requires verification that the trap from the relocated toilet is no more than 42 inches from the main stack per IRC P2706. Your contractor will need to show a plumbing riser diagram on the permit application with exact trap-arm lengths; if either is over 42 inches, he'll have to re-route the line or add a secondary vent (wet vent), delaying the start of rough-in work. You're also adding a new exhaust fan duct from the bathroom interior to the roof exterior (Pullman requires 6-inch insulated ductwork in zone 5B). The electrical plan must show a new 20-amp GFCI circuit for the bathroom receptacles. Estimated project cost is $18,000–$25,000 (framing, plumbing, electrical, finishes). Permit fee will be approximately $250–$300. The review cycle is 3-4 weeks; the plan reviewer will specifically request a detail sheet for the shower waterproofing (cement board + membrane type and brand) and a note confirming duct termination is at the roof eave with a cap, not into the attic. Rough plumbing inspection comes first (traps, vent lines, P-trap distance), rough electrical second (GFCI circuit, outlet boxes), then framing (if you're moving a wall), drywall, and final. Total time from permit issuance to final inspection is typically 6-8 weeks if there are no re-reviews.

Scenario B

Tub-to-shower conversion with new waterproofing assembly, no fixture relocation, historic-adjacent Morrison neighborhood

You're converting an existing bathtub to a walk-in shower in your Morrison neighborhood home (1970s, near the historic district overlay but not in it). The toilet and sink stay in place, so no plumbing relocation is required. However, because you're changing the tub enclosure to a shower, the waterproofing assembly changes, and Pullman requires a permit. The reason: IRC R702.4.2 requires continuous waterproofing behind the new shower, and the old tub-surround finish (tile over drywall, or tile over plaster) does not meet the code requirement for a shower enclosure. You'll remove the old tub and surround down to the studs, install a waterproof shower pan (pre-formed or site-built with membrane), cement board on the walls, and a liquid-applied membrane or a pre-made panel system (Schluter, Kerdi) as the waterproofing layer. Your plan must include a detail sheet showing the waterproofing assembly: brand and type of membrane, installation sequence, and confirmation that the membrane extends at least 6 inches above the finished shower floor and 6 inches beyond the shower threshold. Pullman's plan reviewers will request photos of the installed membrane before they approve the drywall stage. Plumbing is minimal (new shower valve with pressure-balance cartridge per IRC P2903, new drain line tied into the existing stack). Electrical is unchanged if you're not adding a fan or outlet. Estimated project cost is $8,000–$12,000 (tub removal, pan installation, waterproofing, tile). Permit fee is approximately $150–$200. Review timeline is 2-3 weeks. Inspections are: rough plumbing (shower pan and drain), moisture barrier inspection (waterproofing membrane before drywall), and final. The main delay point is the waterproofing detail sheet — have your contractor or supplier provide it before submitting the permit application to avoid one review cycle.

Scenario C

Vanity and faucet replacement in-place, no electrical or fixture moves, College Hill bungalow

You're replacing the old pedestal sink with a new vanity cabinet and faucet, keeping the sink in the same location and using the existing drain line and supply lines. You're not moving the toilet, not adding an exhaust fan, not relocating any plumbing or electrical outlets. This is surface-only work — swapping fixtures without changing the plumbing or electrical infrastructure — and Pullman exempts it from permit requirements. You can purchase and install the new vanity without contacting the Building Department. The existing P-trap and supply connections are undisturbed, so no trap-arm length verification is needed. If the new vanity is wider or taller than the old pedestal sink, you may need to adjust water supply lines or the drain slightly, but as long as you're not lengthening the trap-arm beyond 42 inches or moving the drain location, you remain exempt. No inspection is required. Cost is $1,500–$3,000 for vanity, faucet, and installation labor. This scenario showcases Pullman's exemption threshold: the city distinguishes between fixture replacement (exempt) and fixture relocation (permitted). If you decide mid-project to move the sink to the opposite wall to make room for a larger vanity, that crosses the line — at that point, you'd need to pull a permit for the plumbing relocation, even though the electrical and walls remain unchanged. Pullman's Building Department FAQ explicitly states: 'Replacing a toilet, faucet, or vanity in the same location without changing plumbing or electrical does not require a permit.' Verify with a quick call to the Building Department if you're uncertain whether your vanity adjustment constitutes a location change.

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Pullman's waterproofing documentation requirement — why plan reviewers ask for product details

Pullman sits in a region with moderate to high precipitation (Sunnyside/Pullman average 15-18 inches annually, but winter moisture and spring snowmelt create extended damp conditions). The city's adoption of IRC R702.4.2 and stricter enforcement of waterproofing documentation reflects this climate reality: bathrooms that fail waterproofing become expensive water-damage claims within 5-10 years. Pullman's plan reviewers specifically request product data sheets, installation instructions, and often before-and-after photos of the waterproofing layer because they've seen too many jobs where a contractor interpreted 'waterproof the shower' as 'use cement board and call it done.' Cement board alone is not waterproof; it's water-resistant. IRC R702.4.2 requires continuous waterproofing — a sealed membrane layer — behind the finished surface.

When you submit a bathroom permit, Pullman expects to see one of two assemblies documented: (1) Cement board + liquid-applied membrane (Redgard, Aqua Defense, equivalent) with product label and installation sequence showing the membrane extending 6 inches above the tub rim and lapping onto the shower floor pan; or (2) Pre-formed waterproof panel system (Schluter Kerdi, Wedi, equivalent) with installation detail showing proper joint sealing and panel-to-pan connection. If your plans say 'cement board and tile,' the reviewer will issue a correction request: 'Specify membrane product and installation method.' This single detail causes 15-20% of bathroom permit rejections in Pullman. To avoid it, include a one-page detail sheet showing the assembly cross-section, the membrane product name and brand, and a photo of the installed membrane (or a specification calling for contractor photo at rough stage). Many Pullman contractors now include this proactively; those unfamiliar with the city's standards often miss it and face a 1-2 week review delay.

Pullman also scrutinizes duct termination in the context of moisture: the exhaust fan must terminate to the exterior (roof or wall), not into the attic or crawl space, because the moist air displaced by the bath fan would migrate into unconditioned spaces and cause mold and rot. Frost depth in some Pullman neighborhoods (30+ inches in the eastern part of town) means roof penetrations must have proper flashing and slope; the Building Department's plan review includes a note confirming this detail. If your plans don't show duct termination location, the reviewer will ask for clarification. Providing a roof or wall elevation showing the fan cap location saves this back-and-forth.

Owner-builder permits and licensing requirements in Pullman — when you can DIY and when you can't

Washington state allows owner-builders to perform work on owner-occupied homes, but plumbing and electrical work are regulated trades requiring either a licensed contractor or an L&I exemption card. Pullman's Building Department honors L&I exemption cards; if you hold one for plumbing and/or electrical, you can pull the permit and do the work yourself. To qualify for an L&I exemption card, you must be the owner of the property, occupy it as your primary residence, perform the work yourself (not hire labor), and the work must be on a single-family residence. The card costs $55 and is good for two years; you apply through the Washington Department of Labor & Industries Contractor Registration office (360-902-5800 or online at lni.wa.gov). The process takes 1-2 weeks. Many Pullman homeowners hire a licensed plumber for rough-in and a licensed electrician for circuit work, then do tile, paint, and finish trim as the owner-builder. This hybrid approach is common and fully acceptable to Pullman's Building Department.

If you don't hold an exemption card, you must hire a licensed contractor (plumber and electrician). The permit will be issued in the contractor's name, but your name appears as the property owner. Pullman requires the contractor's license number and Washington Unified Business Identifier (UBI) on the permit application. The contractor is responsible for scheduling inspections and correcting any violations. Some Pullman homeowners attempt to pull permits as owner-builders for bathroom work, then hire unlicensed handymen to do plumbing and electrical; this is a violation of Washington state law and Pullman code. If the Building Department inspector discovers unlicensed work, the inspector will issue a stop-work order, and you'll face fines ($500–$1,500) plus the cost of re-doing the work with a licensed contractor. To avoid this, confirm your L&I exemption card status (or get one) before pulling the permit, or hire licensed contractors upfront.

Pullman's Building Department will ask to see evidence of your exemption card during plan review; have a copy ready if you're claiming owner-builder status. If you don't have a card and you claim to be the owner-builder, the reviewer will issue a correction request asking for the contractor's license number. This simple step saves weeks of delay and prevents violations.

City of Pullman Building Department
Pullman City Hall, Pullman, WA (contact for current address and office location)
Phone: (509) 338-3200 or confirm via Pullman city website | https://www.pullmanwa.gov (check 'Building Permits' or 'Community Development' for online portal access)
Monday–Friday, 8:00 AM–5:00 PM (Pacific Time); verify holiday hours with the city

Common questions

Do I need a permit if I'm just replacing the toilet and vanity in place?

No. Replacing a toilet, faucet, or vanity in the same location without moving plumbing lines or electrical outlets is exempt from permit requirements in Pullman. If you're removing the old fixtures and installing new ones that connect to the existing drain and supply lines, no permit is needed. However, if you're relocating the sink to a different wall or adding a new drain line, a permit is required.

What happens if I convert a bathtub to a shower without a permit?

Converting a tub to a shower changes the waterproofing assembly, which Pullman requires to be permitted and inspected. If you do it without a permit and the waterproofing fails, you risk water damage to the framing and substructure ($5,000–$15,000 in repairs). Additionally, when you sell your home or refinance, the unpermitted conversion must be disclosed, and buyers often demand it be permitted retroactively or they deduct 10-20% from their offer. Get the permit upfront; it costs $150–$200 and takes 2-3 weeks.

How long does plan review take for a bathroom permit in Pullman?

Standard review time is 2-5 weeks depending on the complexity and whether you've included all required detail sheets (plumbing riser diagram, electrical plan, waterproofing assembly detail, exhaust duct termination). If you submit incomplete plans, add 1-2 weeks for the re-review cycle. Calling the Building Department before submitting to confirm your detail sheets are acceptable can save one revision cycle.

Do I need a structural engineer stamp for my bathroom remodel in Pullman?

Only if you're moving or removing a load-bearing wall. Pullman's Building Department plan review will flag load-bearing wall changes and require either a structural engineer's signed framing plan or calculations showing the wall is non-bearing. For most full bathroom remodels that don't touch walls, no engineer is required. If you're unsure whether a wall is bearing, call the Building Department; they can often determine this from the existing plans or a site visit.

What is the permit fee for a full bathroom remodel in Pullman?

Pullman calculates permit fees as a percentage of the project valuation (estimated total cost of materials and labor). A typical full bathroom remodel runs $15,000–$40,000, resulting in permit fees of $200–$400. The fee schedule is available on the Pullman city website or by calling the Building Department. Fees are non-refundable once work begins.

Can I do the bathroom remodel myself without hiring a contractor?

You can perform finish work (tile, paint, trim) as an owner-builder, but plumbing and electrical work require either a licensed contractor or an L&I exemption card from Washington state. To get an exemption card, you must be the owner and occupant of the home; the card costs $55, takes 1-2 weeks to obtain, and is good for two years. Many Pullman homeowners hire a licensed plumber and electrician for rough-in, then do the finishing work themselves.

What inspections are required for a bathroom remodel in Pullman?

Rough plumbing (before walls close, checking trap sizing and vent routing), rough electrical (GFCI circuit installation), and final (fixtures, tile, and finishes). If you're moving walls, framing inspection is also required. The moisture-barrier inspection (waterproofing membrane before drywall) is sometimes combined with rough plumbing. Call to request each inspection after the stage is complete; turnaround is typically 2-3 business days.

If my home was built before 1978, does that affect the bathroom permit?

Yes. Pullman flags pre-1978 homes as Lead-Based Paint (LBP) disclosure-required. You must provide EPA brochure and allow a 10-day inspection window for potential renters or buyers (if applicable). This doesn't stop the permit or add costs, but it does add time to the process. Ensure you follow federal LBP disclosure rules; violation carries fines up to $16,000.

Can I use drywall instead of cement board in a shower in Pullman?

No. IRC R702.4.2, adopted by Pullman, requires cement board or equivalent water-resistant backing behind shower enclosures, not standard drywall. Standard drywall absorbs water and will fail. You must use cement board (HardieBacker, Durock) plus a waterproof membrane, or a pre-formed waterproof panel system (Schluter, Kerdi). Pullman's plan reviewers verify this detail; if your plans show standard drywall, they will issue a correction request.

What is the maximum trap-arm distance for a relocated toilet in Pullman?

Per IRC P2706, adopted by Pullman, the trap-arm distance from the P-trap to the main drain stack cannot exceed 42 inches. If your relocated toilet's drain line runs longer than 42 inches, you must add a secondary vent or re-route the line. Pullman's plan reviewers verify this on the plumbing riser diagram; provide exact measurements to avoid a correction request.

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 Pullman Building Department before starting your project.

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