How Much Does a Bathroom Remodel Cost in Seattle? (2026 Guide)

As Sarah Lindqvist, NKBA-certified designer at Kolmo Construction (Lic# KOLMOL*753JS), I've priced hundreds of Seattle bathroom projects — and the question I hear most is some version of "why did my neighbor pay $9,000 while my quote says $45,000?" Both numbers can be right. Bathroom pricing swings harder than any other room in the house because three variables stack multiplicatively: the size of the room, how deep the scope goes, and what's hiding behind the walls of a 1920s Ballard craftsman. This guide breaks down what Seattle homeowners actually pay in 2026, using the same pricing engine behind our free bathroom cost calculator.

Quick Summary & Key Takeaways

• Cosmetic refresh (paint, fixtures, hardware, new vanity — nothing moves): $2,000–$7,000 for most Seattle bathrooms
• Standard remodel (new vanity, tile, fixtures, lighting, minor layout tweaks): $14,000–$22,000 for a typical 40 sq ft full bath
• Full gut renovation (tear-out to studs, layout changes, plumbing rerouting): $24,000–$38,000 for a full bath, $45,000–$75,000+ for a primary suite
• Why 2026: a midrange bathroom remodel recoups roughly 74% at resale in the Seattle market — one of the strongest returns of any interior project — and permit queues are shorter than they were during the 2024–25 backlog.

Seattle Bathroom Remodel Costs by Size and Scope

The fastest way to bracket your budget is the grid below. Sizes reflect real Seattle housing stock: powder rooms in Wallingford bungalows run 18–25 sq ft, standard full baths 35–45 sq ft, and primary baths in newer construction 70–110 sq ft.

Three worked examples straight from our calculator, so you can see how a total actually assembles:

• $4,250 — cosmetic refresh, 40 sq ft full bath. Paint, hardware, accessories, budget vanity swap in the same location. About 4 working days.
• $18,080 — standard remodel, 40 sq ft full bath. Tub-to-shower conversion ($5,000 installed), mid-range vanity ($1,800 installed), tile on the floor and shower walls ($1,680), building permit, roughly half materials and half labor. About 10 working days.
• $71,473 — full gut, 90 sq ft primary bath. Complete tear-out, walk-in shower ($7,000), premium vanity ($4,700), floor-to-ceiling tile, heated floors, plumbing relocation, new lighting and ventilation. Six to eight weeks including inspections.

Run your own configuration in the bathroom remodel cost calculator — it prices every line item below against current King County rates.

Where the Money Goes: Line-Item Costs

• Tub-to-shower conversion — $5,000–$6,000. The most-requested upgrade in Seattle right now; includes demo, pan, valve, and surround.
• Walk-in shower (new) — $7,000–$7,500. Curbless adds more for the recessed pan and waterproofing.
• Tub replacement (like-for-like) — $4,000–$4,500. Same footprint, new tub and surround.
• Freestanding tub — $5,000–$5,500. Plus plumbing relocation if the drain moves.
• Vanity, installed — $650–$1,000 budget · $1,800–$2,600 mid-range · $4,700–$5,700 premium. Includes counter, sink, and faucet hookup.
• Tile work — $20–$22/sq ft floor only · $28–$29/sq ft floor plus shower walls · $34–$36/sq ft floor-to-ceiling. Shower walls roughly add 50% to the effective area; full-height tile doubles it.
• Heated floors (electric radiant) — $1,300–$2,000. Cheap comfort in a Seattle February; requires its own electrical circuit.
• New lighting — $700–$1,100. Vanity lights plus overhead, on a fresh switch leg.
• Ventilation fan — $400–$650. Code requires mechanical ventilation; undersized fans are why Capitol Hill apartments grow mildew.
• Plumbing relocation — $2,800–$4,200. Moving a toilet or sink across the room. This single decision separates a standard remodel from a gut.
• Permits — $400–$1,000+ depending on scope and valuation (breakdown below).
• Contingency — plan 15–20% on top of any quote, and more in pre-1960s housing stock.

Do I need a permit to remodel a bathroom in Seattle?

Usually yes — but not always a building permit. If you're painting, swapping a vanity or toilet in the same location, or replacing a faucet, no building permit is required. The moment the project touches supply or drain lines you need a plumbing permit; new circuits or moved outlets need an electrical permit (issued through Seattle City Light's jurisdiction rules and WA L&I for the trade work); and altering walls, framing, or the room's layout triggers a building permit from the Seattle Department of Construction and Inspections (SDCI). Most bathroom building permits qualify for SDCI's Subject-to-Field-Inspection track — no design-review queue, an inspector simply verifies the work.

On fees: Seattle prices building permits off project valuation. At a $25,000 valuation the building permit works out to roughly $869 all-in ($509 base fee + $331 plan review + surcharges), with trade permits for plumbing and electrical added separately. Skipping permits to save $900 on a $25,000 project is a bad trade — unpermitted work surfaces in title searches and torpedoes sales.

The Old-Seattle Gotchas (Read Before You Demo)

Seattle's housing stock predates most of its plumbing standards, and this is where budgets blow up:

• Asbestos. Vinyl flooring, mastic, and wallboard in homes built before the mid-1980s frequently contain asbestos. If you own and occupy a single-family home, Puget Sound Clean Air Agency rules let you survey it yourself; rentals, condos, and any demolition require an AHERA-certified inspector, and removal beyond 48 sq ft of surface material requires notification and a filing fee.
• Lead paint. Homes built before 1978 fall under the EPA's Renovation, Repair and Painting rule — your contractor must be RRP-certified (Kolmo holds firm certification R25-0269) and follow lead-safe containment during demo.
• Galvanized and cast-iron plumbing. Queen Anne, Ballard, and West Seattle craftsman homes often still run original galvanized supply lines. Opening the wall is the cheap moment to replace them; closing it back over 90-year-old pipe is how you fund a second remodel after a leak.

The Hidden Plumbing Costs That Blow Up Estimates

Every experienced Seattle estimator carries the same mental list of things you can't see from the doorway, and it's why written contingency matters more than a low bid:

• Rot under the tub or toilet flange. A slow wax-ring leak reads as "slightly soft floor" until demo day, then becomes joist sistering and new subfloor — typically $1,500–$4,000 depending on spread.
• No shut-off valves, or ones that don't hold. Common in pre-1970s homes; replacing corroded stops and supply lines is cheap during the remodel and disruptive any other time.
• Vent stacks where your new layout wants to go. A drain can move; a vent stack through the roof mostly can't, at least not for less than the cost of the shower it's blocking.
• Two-wire electrical with no ground. Knob-and-tube or early Romex behind the vanity wall means the new GFCI circuit the code requires becomes a small electrical project of its own.

None of these are reasons to skip the remodel — they're reasons to open the wall with a plan, a permit, and a contingency line, in that order.

Is a bathroom remodel worth it in Seattle?

For a midrange remodel, yes — it's one of the better-returning projects you can do. The Cost vs. Value data for the Seattle/Pacific Northwest market puts a midrange bathroom remodel at 73.7% cost recovery at resale (about $18,600 back on a $25,300 project), while upscale remodels recover around 61.6%. The pattern is consistent: money spent fixing function — a failing shower, one bathroom for a four-person household, no ground-floor toilet — returns far more than money spent on luxury finishes. And a dated bathroom is one of the first things Seattle buyers screenshot from a listing.

How long does a bathroom remodel take in Seattle?

A cosmetic refresh takes about a week; a standard remodel two to three weeks; a full gut six to eight weeks or more. The working-day math is only half the answer — the other half is sequencing. Tile needs cure time, waterproofing needs inspection before it's covered, and plumbing and electrical rough-ins each need their own inspection window with SDCI. The most common schedule killer isn't labor, it's lead time: custom glass shower doors run three to five weeks from measurement, and out-of-stock tile can idle a finished-but-for-the-floor bathroom. Order long-lead items before demo day, not after.

What is the cheapest way to remodel a bathroom in Seattle?

Keep every fixture where it stands and spend on surfaces, not plumbing. The cosmetic tier exists because location changes are what money is made of: a same-footprint vanity swap costs $650 installed, while moving that vanity across the room adds $2,800–$4,200 in plumbing relocation before the vanity itself. The high-impact, low-cost moves are paint, a new mirror and lighting ($700–$1,100), hardware, a reglazed rather than replaced tub, and floor-only tile at $20/sq ft instead of full-height at $36. A disciplined $4,000–$5,000 cosmetic refresh photographs nearly as well as a $20,000 remodel — the difference only shows when you open the shower wall. One warning: don't cosmetically refresh over active problems. Painting around a leaking valve or soft subfloor buys the leak time to get more expensive.

Contractor Red Flags

• Cash-only, no-permit offers. You carry the liability, not the contractor — and it resurfaces at sale time.
• A bid dramatically below the others. In a market where tile labor alone runs $14+/sq ft, a lowball bid is a change-order machine waiting to fire.
• No written scope. "Remodel bathroom — $15,000" is not a contract. Every line item above should appear in yours.
• Unverifiable registration. Look the company up on Washington L&I's contractor-verify tool before signing — registration, bond, and insurance are public record.

Your Pre-Remodel Checklist

1. Measure your bathroom and pick a scope tier (cosmetic / standard / full gut).
2. Price your configuration in the free calculator to set a realistic anchor.
3. Decide now whether any fixture moves — plumbing relocation is the fork in the budget.
4. If your home predates 1985, budget for an asbestos check; before 1978, expect RRP lead-safe practices.
5. Order long-lead items (glass, tile, vanity) before demolition starts.
6. Confirm which permits your scope needs and who pulls them (your contractor should).
7. Verify your contractor on L&I, then get the full line-item scope in writing.
8. Hold 15–20% contingency — more for pre-1960s homes.

Get Your Real Number

The ranges above are Seattle-market averages; your bathroom, your scope, and your house's era set the actual price. Get an itemized estimate in about a minute with the bathroom cost calculator, explore other projects on the main calculator hub, or have us look at the room itself — site visits and estimates are free.

Kolmo Construction — licensed, bonded, and insured Seattle general contractor (Lic# KOLMOL*753JS) 📞 (206) 410-5100 · kolmo.io/contact