Quick Answer
Bathroom remodeling in the north corridor — Shoreline, Edmonds, Lynnwood, Mountlake Terrace, Bothell and Everett — costs $14,000–$22,000 for a shower or tub replacement and $22,000–$45,000 for a full gut remodel. Most homes here were built between 1955 and 1985, which means original 5' × 8' bathrooms, undersized exhaust fans, and shower walls that stop at showerhead height.
Why the north corridor is its own market
Drive north on I-5 from Seattle and the housing changes character quickly.
Shoreline, Lake Forest Park, Mountlake Terrace, Lynnwood and much of south Everett filled in during the postwar decades — split-levels, ramblers, and modest two-story homes built between the mid-1950s and the mid-1980s, on larger lots than you'd find in the city, with families who have often been in them a long time.
That produces a very specific bathroom. Usually about 5 feet by 8 feet. One window if you're lucky. A fiberglass tub-shower combo or a tiled tub surround that stops around six feet up. A ceiling fan that either doesn't work or vents into the attic. And forty years of Puget Sound humidity working on all of it.
If that describes your bathroom, you're in good company — it describes most of the ones we work on up here.
What we typically find in north corridor homes
Tub-shower combos nobody uses as a tub
Overwhelmingly the most common configuration, and overwhelmingly the most common conversion request. The kids grew up, the bath stopped happening, and the step over the wall started to register.
Fans vented into the attic
Extremely common in homes built before 1990. The fan pulls moisture out of the bathroom and deposits it into the attic, where it condenses on the sheathing. It's a Seattle-area problem generally and a north-corridor problem specifically, because so much of the housing stock is from that window.
Half-height wall systems
Tile or a surround stopping at showerhead height with painted drywall above. Look at your ceiling corner above the shower — if there's shadowing or bubbling paint, that's the reason.
Original 1970s and 1980s fiberglass units
Chalky, yellowed, cracked at stress points, and impossible to get truly clean regardless of what you use on them. Worth saying clearly: those failed because they were built thin to hit a builder's price point, over walls that were rarely waterproofed. A modern gel-coated fiberglass system installed over a properly prepared wall is a different product entirely.
Homeowners planning to stay
This is the biggest difference from the Seattle market. People in Shoreline and Lynnwood tend to be planning to be in that house in fifteen years — which changes the right advice. It makes curbless entries, blocking for future grab bars, and durable low-maintenance materials clearly worth the money rather than an optional upgrade.
What it costs up here
| Project | North corridor range (2026) | Timeline |
|---|---|---|
| Shower replacement | $14,000 – $22,000 | 1–3 days |
| Tub-to-shower conversion | $14,000 – $22,000 | 1–3 days |
| Bathtub replacement | $12,000 – $20,000 | 1–2 days |
| Walk-in tub | $12,000 – $25,000 | 1–2 days |
| Full hall bath gut remodel | $22,000 – $45,000 | 3–6 weeks |
Pricing is essentially the same as Seattle proper — labor rates across the Puget Sound region don't vary much by exit number. What does change is that north corridor bathrooms tend to be a more consistent size, which makes the standard 36" × 60" conversion the right answer more often than it is in the city's odder, older floorplans.
Full cost breakdown: our Seattle bathroom remodel cost guide.
Permits by city
This is where the north corridor genuinely differs from Seattle, because you're crossing jurisdictional lines — and in Lynnwood and Everett, a county line.
| City | Permitting authority | County |
|---|---|---|
| Shoreline | City of Shoreline Permit Services | King |
| Lake Forest Park | City of Lake Forest Park | King |
| Bothell | City of Bothell | King / Snohomish |
| Mountlake Terrace | City of Mountlake Terrace | Snohomish |
| Edmonds | City of Edmonds | Snohomish |
| Lynnwood | City of Lynnwood | Snohomish |
| Everett | City of Everett | Snohomish |
The underlying rules are consistent across all of them, because they're all working from the Washington State Building and Plumbing Codes:
- Like-for-like fixture replacement in the same location: generally no permit
- Tub-to-shower conversion: permit required — the drain must go from 1.5" to 2"
- Moving plumbing, adding circuits, structural changes: permit required
We pull the permit for your city as part of the project. Full permit guide here.
Three things worth prioritizing in a north corridor bathroom
1
Fix the ventilation, properly
If your fan vents into the attic, correcting that is the highest-value few hundred dollars in the entire project. Vented to the exterior, sized for the room, on a humidity-sensing switch. Everything else you install depends on it.
2
Take the walls to the ceiling
Given how consistently we find half-height surrounds up here, this is close to a default recommendation. It removes the failure point, and in a standard 5' × 8' bathroom it makes the ceiling read noticeably higher.
3
Build for the next twenty years now
Since so many north corridor homeowners are staying put: choose the low or zero-threshold base, add a built-in bench, and have us install blocking behind the walls so grab bars can be anchored any time later. None of it looks clinical, all of it is cheap during construction, and every piece is expensive to retrofit.
Why we come up here
A lot of Seattle remodelers quietly stop at the county line. We don't — the north corridor is a core part of our service area, not an exception we make.
We're based in Redmond, which puts us roughly 25 to 40 minutes from most of the corridor. That matters more than it sounds: a company that treats your project as a long haul schedules it around everything else. We schedule it like the local job it is.
See the full list of areas we serve on our service areas page, and finished projects in our portfolio.
Frequently Asked Questions
Live north of the city?
Book a free in-home consultation or call (425) 345-5194. We'll come to you in Shoreline, Edmonds, Lynnwood, Mountlake Terrace, Bothell or Everett, measure the room, and give you a written quote on the same visit.