Portland showers come with Portland houses: plaster and lath, galvanized supply lines, cast-iron drains and floors that are genuinely out of level. Serden Group rebuilds them properly — new supply and drain where the old ones are done, a bonded waterproofing assembly, flood test, then tile — and permits the work through Portland Permitting & Development under Oregon CCB #239429. One licensed team, one project manager.
Open a wall in a 1920s bungalow and four things are waiting: galvanized pipe that should not be reconnected, a cast-iron drain hub that may be corroded, plaster that comes off in sheets, and framing that never was level. None of it is a surprise to us and none of it should be a surprise to you. We walk the house, name the likely repairs, put an allowance in the contract for them, and tell you the number before demolition rather than after.
Tub-to-shower conversions, curbless walk-ins, custom tile and frameless glass across Portland's east side and close-in west side. Demolition, supply and drain replacement, waterproofing, tile and enclosure under one contract.
An unused alcove tub comes out and the full width becomes a walk-in shower — new drain, new valve, new waterproofing.
Zero-threshold entries with a recessed pan and linear drain, so the floor runs flat from the door to the shower head.
Bonded membrane over a sloped bed, sealed corners and flange, water-tested before a single tile is set.
Templated frameless and semi-frameless enclosures, thermostatic valves, rain heads, hand showers and body sprays.
Portland zoning decides most of this before design does. We check your base zone and any overlay — historic, conservation or design — against setbacks, building coverage, height and floor-area limits, and we assess whether your existing foundation and framing can carry a second floor. You get a clear go, a build-out-instead recommendation, or a no, with a realistic budget range.
Floor plans, elevations and stamped structural drawings, then submittal and plan-review management through Portland Permitting & Development. Projects in historic or design-overlay districts get the additional review built into the schedule up front, so the timeline you are given is the timeline you actually experience.
Foundation and shear upgrades where the engineer calls for them, framing, roof tie-in, mechanicals, then finishes — sequenced to keep the house weather-tight on an infill lot with almost no staging room. One project manager, daily progress, and a punch-list walkthrough before final inspection.
Why Homeowners Choose Serden
Portland adds two things Clark County does not: a permitting process with its own rules, and a housing stock old enough that the shower is rarely the only thing that needs work. Here is what we plan for.
A plumbing permit is required whenever a drain, vent or water line is altered — which covers essentially every tub-to-shower conversion. Same-footprint tile and pan replacement with no plumbing change is generally exempt. We submit, schedule and pass inspections under Oregon CCB #239429.
Alberta, Irvington, Ladd's Addition, Laurelhurst and other districts carry historic or design review that can add weeks to exterior work. Interior shower work usually does not trigger it, but we confirm your overlay before scoping so a surprise never lands mid-project.
Pre-1940 bungalows and four-squares hide galvanized supply lines at the end of their life, cast-iron drains that can be corroded at the hub, and plaster walls that need a full backer rebuild once they come off. We carry a written allowance for it instead of a change order you did not see coming.
A century of settling means the bathroom floor in an old Portland house often falls an inch or more across the room. Tile telegraphs it and a curbless shower cannot slope correctly on it. We level the substrate as part of the build, which is why an honest Portland quote sits above a Clark County one for the same tile.
Permit requirements and fees change. Verify current requirements with Portland Permitting & Development for your address — we handle submittal and inspections either way.
From Alameda, Irvington and Laurelhurst to Sellwood, Mt. Tabor, Beaumont-Wilshire and St. Johns — Serden Group builds additions across Portland’s older neighborhoods and the surrounding metro. We know which streets sit inside historic and conservation districts, and what that adds to review.
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Three tiers cover most of what we build in Portland. Every number below includes demolition, waterproofing, tile labor, permit fees and cleanup — Oregon charges no sales tax on top.
Ranges are planning figures, not quotes. Your fixed price comes after a site visit and a written scope.
East side, close-in west side, and the inner suburbs.
Keep Exploring
The services that pair most often with a shower rebuild, plus the planning guides our Portland clients read first.
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