Do I Need a Permit for a Bathroom Renovation in Seattle?

👋 Not sure whether your project needs a permit? Tell us the scope and we'll tell you straight.

*We're a full-service design-build team
Collage of bathroom remodels in west Seattle showing white subway-tile bath, green-tile shower, modern wood vanity, and contractors at work.

Recent Projects

Permitted work, inspected and signed off. Here's a sample of recent bathroom renovations around Seattle.

Small Bath, Big Shift

An older, closed-in bath felt tight and flat.

We wrapped the room in full-height white subway tile, added a grid-glass shower, matte-black fixtures, oversized hex floors, a warm wood vanity, round mirror, and a tidy niche so it's now crisp, tasteful, and refreshingly craftsman.

Modern bath with white subway tile, grid-glass shower, black hex floor, wood vanity, round mirror, and a built-in niche.

Old Stress, New Zen

An old, cramped bath with bulky cabinets hid a water heater you couldn’t reach.

In 8 days we transformed the entire space with new tile, tub-shower combo, single vanity, and balanced lighting, plus a mirrored cabinet, a tidy niche, quiet ventilation, and a relocated, accessible water heater so the space finally feels open n' clean.

Compact bath with tub-shower and niche, slim vanity with arched mirror, gray floor, and stacked laundry beside the toilet.

Modern Lines, Resort Feel

A boring, walled-off bath felt tight and dated.

In 6 weeks we opened the room with wall removal and frameless glass, replaced the tub with a true dual-zone shower, layered large-format tile, warm wood accents, a floating vanity, bench and niche, and even lighting—so it now has an open, modern, resort-level aesthetic.

Bright resort-style bath with long floating wood vanity, slatted accent wall, and a glass double-shower with bench and recessed niche.
Service Area

Which Department Handles What

Seattle splits bathroom permits across two agencies, which is the part that catches people out. Construction, mechanical, and electrical work go through SDCI — the Seattle Department of Construction and Inspections. Plumbing is separate: it goes through Public Health–Seattle & King County. Both are submitted through the Seattle Services Portal, and a job that moves a drain and adds a fan needs both.

Typical bathroom renovation permits:

  • Construction — SDCI
  • Mechanical (fan, venting) — SDCI
  • Electrical — SDCI
  • Plumbing — Public Health–Seattle & King County
  • All submitted via the Seattle Services Portal
  • Condo or HOA approval — separate, and often stricter
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Permits Are Not the Hard Part. Not Knowing Is.

When Seattle Requires a Permit

Moving plumbing. Relocating a drain, a toilet flange, or supply lines means a plumbing permit through Public Health-Seattle & King County. Swapping a fixture in the same location usually does not.
Changing a wall. Removing, adding, or opening a wall is structural work and needs an SDCI construction permit, even when the wall is not load-bearing.
New electrical or a new fan. Adding circuits, moving outlets, or installing an exhaust fan that vents to the exterior requires electrical and mechanical permits through SDCI.
A tub-to-shower conversion, usually. If the drain moves or the valve is replaced, that is permitted plumbing work. A like-for-like swap in the same footprint sometimes is not — it depends on what gets touched.

When You Probably Don't Need One

Cosmetic work. Paint, new tile over a sound substrate, a vanity swap in the same spot, a mirror, or new towel bars. Finishes are not permitted work.
Like-for-like fixture swaps. A new toilet on the same flange, a faucet, or a light fixture in an existing box, with no wiring or piping changes.
Flooring. Replacing floor covering on an existing subfloor, as long as the subfloor itself is not being altered structurally.
But check anyway. Condo and HOA rules are separate from city permits and often stricter. And unpermitted work that should have been permitted becomes your problem at resale, when a buyer's inspector asks for the final sign-off.

All-Inclusive Services

It's been brought to our attention you can't spell demolition without emotion. So there's that. But when things get loud, just know we're in a state of zen from beginning to end. We execute every trade and task with the utmost professionalism – guaranteed.

Layout & Design

We specialize in complete layout redesigns, moving walls and relocating plumbing to create a more spacious and functional bathroom that perfectly fits your lifestyle.

Custom Showers & Tubs

Let us create your personal spa with a luxurious walk-in shower or a deep soaking tub, all built with advanced waterproofing systems for lasting peace of mind.

Vanities & Storage

Maximize your space and elevate your style with beautiful vanities, durable countertops, and smart storage solutions designed to keep your bathroom organized.

Plumbing & Fixtures

Our expert team handles all new plumbing work and professionally installs your chosen fixtures, from elegant faucets and sinks to high-efficiency toilets.

Flooring & Tilework

We install beautiful, durable flooring and custom tilework for your shower and walls, with popular upgrades like radiant floor heating for ultimate comfort.

Lighting & Finishing

The perfect renovation is in the details. We complete your project with expert lighting design, powerful ventilation, professional painting, and crisp trim work.

..if it's in your bathroom, we can do it!
DuetRight

Guaranteed to Do It Right

A successful bathroom renovation in Seattle requires more than just great design. It demands a deep understanding of local building codes, the city’s specific permitting process, and construction techniques suited for our unique marine climate.

We manage all the technical complexities to ensure your project is not only beautiful but also safe, fully compliant, and built to last.

Seamless Permit Management

Navigating the city's requirements can be complex, so we handle it all for you. We manage all required permits including construction and electrical through SDCI and plumbing through Public Health–Seattle & King County, submitting everything via the Seattle Services Portal.

By-the-Book Inspections

Your peace of mind is our priority. We schedule and meet all required city and county inspectors on-site, ensuring full compliance with Seattle code for GFCI protection, exterior-vented bath fans, and moisture management. We never close up a wall until the work is officially approved.

Climate-Proof Construction

We build bathrooms that are tough enough for Seattle's weather. Our methods are designed to combat our damp climate, incorporating continuous waterproofing behind all tile and using mold-resistant materials to keep your bathroom healthy and durable for years to come.

Getting Started

Begin Your Project in 3 Easy, Free Steps

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01

In-Home Consultation

We’ll visit your home to discuss your ideas, evaluate the space, and take initial scans to kickstart your project.

02

Design Video Call

Meet with our project team online to fine-tune your vision, ensure every detail is captured, and shape your design.

03

Detailed Quote and Timeline

We’ll provide a detailed, no-surprises estimate and timeline, giving you everything you need to confidently move forward.

Featured Reviews

Building Trust, One Tile At a Time

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4.9 on Google
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5.0 on Home Advisor
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5.0 on Yelp

"The Bathroom I Wanted"

"I used DuetRight to renovate my bathroom. As expected, they did an amazing job and were able to work with me to design the bathroom I wanted. Super happy and I look forward to working with them again. Thank you guys!"

A joyful man in a black jacket and purple shirt, smiling and looking at the camera, stands in front of a green and brown tree, creating a vibrant and engaging image.

SatyaJit P.

"Whole Process Stress-Free!"

"The DuetRight team did an incredible job remodeling the single bathroom in my condo, working with me every step of the way designing, picking out materials, purchasing, and coordinating. They were very communicative and organized making the whole process stress-free!"

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Tom S.

"Solved the Issue"

"DuetRight helped us to re-tile our shower after we discovered a rotten backboard causing the previous tiles to fall off. The team efficiently solved the issue, leaving us with a beautifully tiled, durable shower."

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Taylor H.

Our Team

Who You'd Be Working With

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Angelo Russoniello

Co-Founder, Director of Operations
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Stan Miron

Co-Founder, Project Manager
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Vladimir Moroz

Tiling Architect, Team Guide
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Serhii Potavov

Tile Specialist Assistant
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Austin Thomas

Customer Specialist

FAQs

More questions? Don't be shy. Give us a call!

Call Us
How long does a bathroom permit take in Seattle?
It depends on the review path. Straightforward trade permits for plumbing, electrical, and mechanical are often issued quickly, sometimes over the counter or within a few days. Anything requiring plan review takes longer, and structural changes take longest. We build permit time into the schedule rather than starting demolition and hoping.
Can I pull the permit myself as the homeowner?
In many cases yes, Seattle allows owner-filed permits for work on your own home. The tradeoff is that you become responsible for the inspections and for anything the inspector wants corrected. When we do the work, we pull the permits and meet the inspectors, so responsibility sits with the licensed contractor instead of with you.
What happens if work was done without a permit?

It usually surfaces at resale, when a buyer's inspector or the county record shows work with no final sign-off. Depending on what was done, resolving it can mean opening finished walls so an inspector can see what is behind them. That is the real cost of skipping a permit, and it lands years later on whoever owns the house.

What do inspectors look at in a Seattle bathroom?

The recurring items are GFCI protection on outlets, an exhaust fan that actually vents to the exterior rather than into a joist bay or attic, correct drain slope and venting, and waterproofing in wet areas. We do not close a wall until the work behind it has been approved, because reopening it later costs far more than waiting a day.