Most bathroom cost articles give you one big number and stop there. This bathroom remodel cost estimator is different: pick your project type, tell it what’s moving, and it adds up a Seattle range line by line from real 2026 cost data. Then read below for what each number means and where it comes from.
Everything here is an estimate, not a quote. Your bathroom, your finishes and what we find behind the walls decide the real price.
Seattle Bathroom Remodel Cost Estimator
3. Anything else moving?
4. Extras
Ranges are 2026 estimates built from the cost sources listed in this article. They are not a quote. Sales tax, design fees and hidden damage are not included.
How the bathroom remodel cost estimator works
The estimator starts with a base range for the kind of project you pick, then adds a range for every fixture that moves and every extra you check. It adds the low ends together and the high ends together. That’s why the spread is wide: it has to cover a basic hall bath in Lake City and a high-end primary suite in Laurelhurst.
Here are the base ranges it uses.
| Project type | Base range (estimate) | Source |
|---|---|---|
| Refresh: new vanity, toilet, fixtures, paint | $3,310 – $15,840 | Angi, Seattle minor remodel (Feb 2026) |
| Small bath or powder room, same layout | $10,000 – $20,000 | Our Seattle bathroom cost guide |
| Full hall bathroom, new tile and shower/tub | $12,180 – $39,020 | Angi, Seattle partial remodel (Feb 2026) |
| Primary bathroom, full gut, upscale | $31,190 – $123,270 | Angi, Seattle full remodel (Feb 2026) |
For a reality check, the 2025 Cost vs. Value report from the Journal of Light Construction puts a midrange bathroom remodel in Seattle at $36,146 and an upscale one at $107,451. Both fall inside the ranges above. Seattle runs well above the national midrange average of $26,138.
What moving fixtures adds
Layout changes are where budgets jump. Every number below comes from our bathroom plumbing cost guide, which breaks down why each move costs what it does.
| Change | Added cost (estimate) |
|---|---|
| Shift a sink along the same wall | $500 – $1,200 |
| Move a sink to a new wall | $1,000 – $3,000 |
| Move a toilet a few feet toward the stack | $500 – $1,500 |
| Move a toilet across the room | $2,500 – $5,000 |
| Relocate a shower or tub drain | $1,000 – $3,000 |
| Cut and patch a concrete slab (only when a drain moves) | $1,000 – $3,000+ |
Most Seattle houses built before 1980 sit on a crawlspace or have a basement under the bathroom, so the slab line usually doesn’t apply. Newer townhomes and some split-levels are different.
Extras the estimator covers
Right now the estimator includes one add-on: a heated tile floor. It scales with the size of the room: about $800 to $1,600 for a powder room, $1,100 to $2,600 for a standard full bath, and $2,400 to $4,500 for a large primary bath, installed with the electrician and permit.
Things it does not try to price, because they vary too much to guess honestly:
- Hidden damage. Rot under an old tub, a leaking shower pan, or mold behind tile. It is common in older Seattle bathrooms and nobody can price it before the walls are open.
- Old wiring or plumbing. Galvanized supply lines, ungrounded outlets, or no bathroom-only circuit. These get fixed once the walls are open.
- Windows and skylights. Replacing or adding one is its own line item.
- Design fees and sales tax. In Washington, sales tax applies to remodeling labor as well as materials.
Why Seattle costs more than the national average
Three reasons come up on almost every job. Labor here costs more than in most of the country. Seattle requires permits for a lot of bathroom work, and the permit means inspections and timeline. And the housing stock is old: Craftsman bungalows, 1950s ramblers and 1960s split-levels, where opening one wall usually means updating the next thing behind it.
For the full breakdown by line item, see our guide to how much a bathroom remodel costs in Seattle.
How to get a tighter number
- Pick finishes early. Tile and fixtures swing the price more than labor. A $4 tile and a $40 tile take the same time to set.
- Decide on the layout first. Keeping the toilet and drain where they are is the single biggest savings.
- Get the bathroom looked at. A 30-minute walk-through, including a look under the floor, narrows the range a lot.
Frequently asked questions
How much does a bathroom remodel cost in Seattle?
Most Seattle bathroom remodels land between about $12,000 and $39,000 for a full hall bath with the same layout, based on 2026 Angi data. A refresh can be under $16,000, and a full primary bath gut can pass $100,000. The 2025 Cost vs. Value report puts a midrange Seattle bath remodel at $36,146.
Is an online bathroom remodel cost calculator accurate?
It’s accurate for a range, not for a price. A good estimator shows you where your project sits and what drives the cost up. Only a site visit can account for hidden damage, old wiring and the finishes you pick.
What is the most expensive part of a bathroom remodel?
Usually labor for tile and the shower, followed by any layout change. Moving a toilet across the room alone can add $2,500 to $5,000.
Does moving plumbing really add that much?
Yes. A toilet needs a 3-inch drain with slope and a vent, and a shower needs a 2-inch drain and a sloped floor. Every move opens the floor and walls, and on a slab it means cutting concrete.
How do I get an exact price for my bathroom?
Get a site visit and a written, itemized estimate. Compare what’s included: demolition, permit, waterproofing, and allowances for tile and fixtures.
Get a straight quote
The estimator gives you a range. We’ll give you a number. We remodel bathrooms across Seattle, Bellevue, Renton and the rest of King County, and we’ll walk your bathroom, check under the floor and put the price in writing. Call 206-851-4233 or contact us here. See more of our work on our Seattle bathroom remodeling page.
Estimates only. Sources: Angi Seattle bathroom remodel cost (updated Feb 25, 2026); JLC Cost vs. Value 2025, Seattle; BB-Builders Pro cost guides.
