Bathroom Remodeling in Seattle, WA

Seattle bathrooms have a moisture problem — and it's not just the rain. Most homes built before 2000 have inadequate bathroom ventilation, and we've pulled back tile to find mold growing inside walls of homes less than 20 years old. If your bathroom fan sounds like a jet engine but barely moves air, or you're noticing grout that keeps going dark no matter how much you scrub, there's a good chance moisture is getting somewhere it shouldn't. A proper bathroom remodel isn't just about picking pretty tile — it's about building a room that can handle the Pacific Northwest climate without rotting from the inside out.

Waterproofing: The Part You Can't See That Matters Most

We use Schluter-KERDI membrane on every shower we build. It costs a bit more upfront than a liquid-applied membrane, but we've never had a callback for water damage on a KERDI installation. That's the trade-off we recommend every time. The membrane goes over the cement board backer, covering every seam, corner, and curb before a single tile goes up. We also use Schluter-DITRA on bathroom floors — it's an uncoupling membrane that prevents cracked tile from subfloor movement, which is common in older Seattle homes with pier-and-post foundations that shift seasonally.

For ventilation, we install Panasonic WhisperCeiling fans rated at a minimum of 110 CFM with a humidity sensor so they run automatically when moisture builds up. That one upgrade alone prevents the vast majority of bathroom mold issues we see. If your current fan is vented into the attic instead of to the exterior — which is shockingly common in Seattle homes from the '60s through '80s — we correct that during the remodel. Venting into the attic just dumps moisture into your insulation and creates a mold factory above your head.

Common Seattle Bathroom Problems We Fix

If you live in a Craftsman, bungalow, or Tudor in neighborhoods like Ballard, Ravenna, or Phinney Ridge, your bathroom is probably 5 feet by 7 feet — maybe 5 by 8 if you're lucky. That standard footprint makes layout critical. We can't make the room bigger without a costly addition, but we can make it feel significantly larger with the right design moves: a wall-hung toilet to open up floor space, a floating vanity, large-format tile with minimal grout lines, and a frameless glass shower enclosure instead of a shower curtain or framed door. Those changes together transform a cramped bathroom.

In homes built before the 1960s, you'll almost always find galvanized steel supply lines and cast iron drain pipes. The galvanized lines corrode from the inside out over decades, reducing water pressure and eventually developing pinhole leaks inside walls. Cast iron drains last a long time, but when they go, they go — and replacing a cracked cast iron drain stack is not cheap. We always scope the plumbing during our initial assessment and let you know if replacement makes sense while the walls are already open. Doing it during a remodel costs a fraction of what it would cost as an emergency repair later.

Oh, and those old cast iron tubs? They weigh 300-400 pounds. Getting one out of a second-floor bathroom in a Craftsman with a narrow stairway is a genuine project. We've done it dozens of times — it usually involves cutting the tub in half with a reciprocating saw, because there's no way it's coming out in one piece without taking the doorframe with it.

Materials and Products We Recommend

For bathroom floors, we almost always recommend large-format porcelain tile — 12x24 or larger. Fewer grout lines means less maintenance and a more modern look. Our go-to suppliers are Daltile and Florida Tile for mid-range projects — great quality, consistent sizing, and they're readily available from local distributors so we're not waiting six weeks for a container shipment. For clients who want a higher-end look, we work with Porcelanosa and Emser for natural stone-look porcelain that's nearly indistinguishable from the real thing.

For shower walls, we love large-format porcelain slabs or stacked 12x24 tiles in a vertical running bond pattern — it's clean, modern, and has way fewer grout lines to maintain than a 3x6 subway tile layout. For accent walls and niches, hand-glazed zellige tile from Clé or a natural marble mosaic adds texture without overwhelming a small space. Vanity-wise, we install a lot of floating vanities from James Martin and Fresca — they look sharp and make the bathroom feel more open. For faucets and shower trim, Kohler's Composed line and Delta's Trinsic collection both hit the sweet spot of good design, solid build, and reasonable price.

What Bathroom Remodeling Costs in Seattle

A standard tub-to-shower conversion runs $8,000-$15,000, depending on tile selection and whether plumbing needs to be moved. A full guest bathroom remodel (new tile, vanity, toilet, fixtures, fan, lighting) typically falls in the $18,000-$30,000 range. A full master bath remodel with layout changes, curbless shower, heated floors, and upgraded finishes is usually $25,000-$55,000. High-end projects with custom tile work, freestanding tubs, and premium fixtures can go higher. As with kitchens, if your home is pre-1978, budget for potential lead and asbestos abatement.

One cost that catches people off guard: if we open up the walls and find galvanized plumbing or a deteriorating drain stack, replacing it adds $3,000-$6,000 to the project. It's not fun news, but it's far better to discover it during a planned remodel than as a burst pipe on a Saturday night. We always flag potential plumbing concerns during the initial consultation so you can plan for it.

A Recent Project That Came Out Great

A Bellevue client recently asked us to convert their '90s builder-grade master bath into something that actually felt like a retreat. The original layout had a massive garden tub that nobody used, a cramped shower stall with a moldy fiberglass pan, and a single vanity with a cultured marble top. We tore it all out. In its place, we built a curbless walk-in shower with a Schluter linear drain, floor-to-ceiling 24x48 porcelain tile in a warm concrete tone, a recessed niche with zellige accent tile, and a frameless glass panel. We added Nuheat electric heated floors throughout, installed a floating 60-inch double vanity with undermount Kohler sinks, and finished it with Delta matte black fixtures. The whole room went from forgettable to the best room in the house.

Let's Talk About Your Bathroom

We do free in-home assessments across Seattle, Bellevue, Kirkland, Redmond, and the surrounding areas. We'll look at your current bathroom, check the plumbing condition, measure the space, and talk about what you want to change. No hard sell — just honest advice from a team that's done hundreds of these. If your bathroom has been bugging you for years, give us a call or fill out the form below. We'll tell you what's possible, what it'll cost, and how long it'll take.