Tub-to-Shower Conversion in Longview, WA
Trade an unused tub for a spacious walk-in shower.
Longview is part of our wider Southwest Washington service area in Cowlitz County. When it comes to tub-to-shower conversion, the details that matter here are specific to Longview homes.
Longview sits at roughly 36 feet, low on the valley floor, where a high water table and slow-draining ground keep crawlspaces, foundations, and the bottom courses of siding damp well after the rain stops. PRISM's 1991-2020 climate normals put it at about 47 inches of precipitation a year — spread across about 116 measurable-rain days a year at LONGVIEW, 1.4 miles away. For tub-to-shower conversion, that matters most in the parts you never see: with wet weather on roughly 116 days a year, indoor humidity has few chances to dry out, so exhaust ventilation sized to the room, a continuous vapor and air-control layer, and properly detailed wet-area waterproofing do more for the life of the work than any finish selection. Longview's housing stock mixes historic mill-town homes with newer riverside and hillside builds, and that older stock is where tub-to-shower conversion most often turns up previous repairs that never addressed the water — all permitted under the Washington State Energy Code.
This page covers tub-to-shower conversion specifically for Longview. For the full service details, see our Tub-to-Shower Conversion page, or explore all the remodeling work we do in Longview.

Longview is unusual among Southwest Washington cities in that it was built as a single planned community in the 1920s by the Long-Bell Lumber Company, complete with a designed civic core and residential districts. The Old West Side historic district holds 1920s Tudor, Craftsman, and period-revival homes with original detailing and, often, original wiring, plumbing, and single-pane windows that reward careful modernization. The nearby St. Helens neighborhood adds a similar mix of early-to-mid-1900s homes, while the Highlands area to the east brings newer postwar and later construction. Across all of these eras, Longview's setting near the Cowlitz and Columbia rivers makes moisture management and rot prevention a constant focus of our exterior and structural work.
From Old West Side, St. Helens neighborhood, and Highlands to the rest of Longview, we match every tub-to-shower conversion project to the age, construction, and condition of your specific home rather than a one-size-fits-all spec.
- County
- Cowlitz County
- Permitting authority
- City of Longview — Building & Development Services
- Elevation
- 36 ftCopernicus DEM GLO-90 at the city center
- Annual precipitation
- 47 inPRISM 1991-2020 normals, 800 m grid at the city center
- Measurable-rain days
- 116 days/yrDays with at least 0.10 in — NOAA 1991-2020, LONGVIEW, 1.4 mi
- Climate zone
- Marine 4CWashington State Energy Code climate zone
- Full tub removal and haul-away
- Drain relocation and supply-line adjustment for a shower
- Waterproofed, sloped shower base
- Curbless or low-curb entry
- Tile or low-maintenance solid-surface walls
- Frameless glass or a clean shower opening
- Niche and bench for storage and seating
- In-wall blocking for grab bars
- Slip-resistant shower floor
- Ventilation upgrade where the existing fan is undersized
- 01
Assessment & Plan
We confirm the plumbing can move to suit a shower, plan the new drain location and entry, and choose the wall and glass approach that fits the footprint.
- 02
Tub-Out & Plumbing
The tub comes out, we inspect the subfloor and framing, and we rework the drain and supply lines for the shower — repairing any moisture damage the old tub was hiding.
- 03
Waterproof & Build
We build and waterproof the sloped base, apply a membrane on the wet walls, and install tile or panels over a continuous barrier.
- 04
Glass & Finish
Glass, fixtures, and hardware go in, everything is sealed, and we confirm ventilation and drainage before the final walkthrough.
Typical timeline: Typically 1 – 2 weeks. We provide a written schedule after assessing your Longview home.
Permit requirements for tub-to-shower conversion in Longview are handled through City of Longview — Building & Development Services. Because Washington building rules — including the Washington State Energy Code and local amendments — vary from one jurisdiction to the next, we confirm what your specific address requires and pull the permits and schedule the inspections the scope calls for.
- Building permits are required for structural, electrical, plumbing, and mechanical work
- Exterior changes to homes in the Old West Side historic district may involve design considerations
- New construction and most remodels must meet the Washington State Energy Code (WSEC)
Get Your Free Tub-to-Shower Conversion Estimate in Longview
Free, no-obligation in-home consultation across Cowlitz County — we respond within one business day with a fixed-price proposal.
Will converting my tub to a shower hurt resale value?
Usually not, as long as the home keeps at least one bathtub — most buyers and appraisers want a tub somewhere in the house, typically in a hall or guest bath. Converting a rarely-used primary-bath tub to a walk-in shower is a popular, high-appeal upgrade. We help you plan which bathroom keeps a tub so the conversion adds value rather than limiting your buyer pool.
Does the plumbing have to move?
Some of it, yes. A tub drain sits in a different spot than a shower drain, so we relocate the drain and adjust the valve and supply lines for a shower. That work is straightforward when there's crawlspace access below; on a slab foundation or in tight framing it takes more planning, which we confirm during the assessment.
How long does a tub-to-shower conversion take?
A typical conversion runs about one to two weeks, depending on the plumbing changes, the wall finish you choose, and any subfloor repair uncovered when the tub comes out. You get a written schedule after the assessment.
Can the new shower be curbless or accessible?
Yes. A conversion is a natural time to go curbless and add grab-bar blocking, comfort-height fixtures, and a bench — see our accessible and aging-in-place bathrooms page for how we build for safety and independence.
Do I need a permit for tub-to-shower conversion in Longview?
It depends on the scope. City of Longview — Building & Development Services sets the requirements for Longview, and they can differ from neighboring Washington jurisdictions. We confirm what your project needs before we start and handle the permit and inspection process as part of the job.
Do you handle tub-to-shower conversion on both older and newer Longview homes?
Yes. From Old West Side, St. Helens neighborhood, and Highlands to the rest of Longview, Longview in Cowlitz County spans a range of housing eras and construction types, and we tailor the tub-to-shower conversion plan to the age and condition of your specific home rather than a one-size-fits-all template.
How does Longview's weather affect tub-to-shower conversion?
Longview averages about 47 inches of precipitation a year in PRISM's 1991-2020 climate normals. NOAA's station at LONGVIEW, 1.4 miles away, records about 116 measurable-rain days a year over the same 1991-2020 period. That is the constraint every detail on a tub-to-shower conversion project has to answer to: assemblies need a drainage path and the ability to dry, and exterior stages get scheduled around the weather rather than against it. We plan the sequence so nothing is left open to the rain.
What should Longview homeowners know before starting tub-to-shower conversion?
Two things specific to Longview. First, permits run through City of Longview — Building & Development Services, whose requirements differ from neighboring Washington jurisdictions — we confirm what your address needs before work starts. Second, Longview sits at roughly 36 feet, and that low, slow-draining ground means crawlspace moisture and ground-contact detailing deserve a close look before anything is closed up. Both feed into the written scope and schedule you get before we start.
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