The practical rule: if the work is behind the drywall, assume a permit.
Which permit type
Seattle's Department of Construction and Inspections issues two general routes for residential remodel work.
**Subject-to-field-inspection (STFI).** The simpler route, for projects with minimal plan requirements. SDCI names "remodeling a portion of your house" and "interior non-structural alterations" among the qualifying examples. Most bathroom remodels land here. The application and screening process typically takes a few days, and the permit is issued electronically through the Seattle Services Portal.
**Addition or alteration (full plan review).** Required when the project exceeds STFI limits — including projects that disturb more than 750 square feet of land, exterior work beyond window/siding/roofing replacement on sites with environmentally critical areas, foundation alterations on ECA sites, and work that changes building use or occupancy. Adding a bathroom as part of an addition or a dormer usually falls here, and takes considerably longer.
**Trade permits.** Plumbing and electrical work are permitted and inspected as their own scopes. Your contractor's licensed plumber and electrician typically pull these.
What it costs and how long it takes
**Fees** are based on the value of your project, plus applicable technology fees, and are due when the permit is issued. SDCI publishes the Fee Subtitle with the current schedule. For a typical bathroom remodel, permit and inspection fees are usually a low-single-digit percentage of the project cost — real, but not a driver of the budget.
**Timeline.** STFI screening takes a few days. Full plan review takes materially longer and varies with SDCI's queue. The bigger schedule impact for most bathroom remodels isn't getting the permit — it's the **inspection holds during construction**, which typically add two to five days at the rough stage.
**Validity.** Permits are valid for 18 months from issue, with renewal available for longer projects.
Inspections you'll actually see
1. **Rough plumbing** — supply and drain, before anything is covered
2. **Rough electrical** — wiring, boxes, fan
3. **Framing** — if walls were altered
4. **Insulation / vapor** — where applicable
5. **Final** — fixtures set, everything operating
Nothing gets covered before the rough inspections pass. Building this into the schedule up front is the difference between a pause you planned for and one that feels like a delay.
Why it matters that the work is permitted
**Resale disclosure.** Washington sellers complete a disclosure form. Unpermitted work is a known problem in a transaction — it can affect financing, trigger a price reduction, or require retroactive permitting.
**Insurance.** After a loss, an insurer can raise questions about unpermitted work in the affected area. This is a real issue in water damage claims that trace back to a bathroom remodel.
**Safety.** The inspections exist because plumbing and electrical failures in a bathroom are hidden until they're expensive. A rough plumbing inspection catches a slope error before it's tiled over.
**Your contractor.** A registered Washington contractor pulling a permit puts their registration number on the record. Someone who suggests skipping the permit is telling you something about how they work.
Who pulls the permit
Your contractor should. In Washington, a registered contractor pulls permits in their own name and their registration is on file with the record.
Be wary of a contractor asking *you* to pull an owner-builder permit for work they're performing. It shifts liability to you, and it's often a sign the contractor isn't properly registered. Verify any contractor's registration at Washington L&I's Verify a Contractor tool before signing anything.
How Fortress Build & Finish handles permitting
We pull the permits, schedule the inspections and build the inspection holds into the schedule we give you at the start — so a two-day pause at rough plumbing shows up as a planned pause and not a surprise. Our registration and license number, FORTRBF756KA, is on every permit we pull.
Frequently asked questions
Do I need a permit to remodel a bathroom in Seattle?
Yes, if the work involves plumbing, electrical or structural changes. Cosmetic work — paint, tile replacement, a like-for-like vanity swap on existing rough-in — generally does not.
How much is a bathroom remodel permit in Seattle?
Fees are based on project valuation plus technology fees, per SDCI's published Fee Subtitle. For a typical bathroom remodel, it's a low-single-digit percentage of project cost.
How long does it take to get a permit in Seattle?
A subject-to-field-inspection permit is typically screened in a few days. Full plan review takes considerably longer and depends on SDCI's current queue.
What happens if you remodel without a permit?
It becomes a disclosure item at resale, can complicate an insurance claim, and SDCI can require the work to be exposed for inspection or brought into compliance.
Can I pull the permit myself as a homeowner?
You can, for work on your own home. But if a contractor is doing the work and asks you to pull it, treat that as a warning sign — it moves liability to you.
---
Fortress Build & Finish —
(206) 426-2067 · Licensed, bonded and insured — License No. FORTRBF756KA · Serving Seattle, Ballard, Magnolia, Queen Anne, West Seattle, Capitol Hill, Wallingford, Bellevue, Kirkland, Renton, Shoreline, Edmonds and the surrounding communities ·
fortressbuildfinish.com
