Building Permit in Seattle, Washington (2026)
Without a Building Permit from the Seattle Department of Construction and Inspections (SDCI), your construction project cannot legally proceed—contractors will stop work, lenders will freeze funding, and you face stop-work orders and fines. A Building Permit (also called a construction permit) is the SDCI's authorization that your planned work meets Seattle's building codes, zoning requirements, and safety standards. Key facts:
- 28 fields — ApronPrep auto-fills 23
- Government filing fees vary based on project cost and type; contact SDCI for current schedule
- Timeline varies based on project complexity and design review requirements
Most applicants complete this application in under 15 minutes with ApronPrep, which auto-fills 23 of 28 fields.
Analyzed from Building Permit
82% from one compliance interview
Manual entry or document upload required
Why You Need a Building Permit
A Building Permit in Seattle is not an optional administrative step; it is your legal obligation before starting most construction. The requirement is anchored in Seattle Municipal Code (SMC) Title 22 - Building Code, which adopts and enforces the Washington State Building Code (WSBC) and the International Building Code (IBC). Specifically, SMC Chapter 22.200 mandates permits for any work that alters the structure, egress, plumbing, mechanical, or electrical systems of a building. This is locally administered by the Seattle Department of Construction and Inspections (SDCI). For accessibility, your project must also comply with the Washington State Barrier Free Code, integrated into local enforcement. Without this permit, your construction is considered illegal from its start.
Proceeding without a permit or failing inspections triggers immediate and costly consequences from SDCI. Based on their enforcement protocols, the primary penalties include:
- Stop-Work Orders: SDCI inspectors can post an order on-site, halting all construction immediately. Every day work continues is a separate violation.
- Fines and Fees: You will be liable for double the original permit fee as a penalty, plus all outstanding inspection fees. Unpermitted work discovered later can also lead to significant fines during a property sale or refinance.
- Certificate of Occupancy Denial: The city will not issue a final Certificate of Occupancy for new spaces or major changes, meaning you cannot legally open or use the remodeled area.
- Required Demolition: At the city's discretion, you may be forced to tear out completed work—at your own expense—so an inspector can verify compliance with codes.
- Insurance and Lease Voidance: Most commercial property insurance policies and leases are voided by illegal construction, potentially leaving you fully liable for any accidents or damages.
Legal code: State building code (locally administered), local building ordinances, state accessibility code
Recent update: As of 2026, SDCI has fully implemented its updated fee schedule and requires electronic plan submission for all commercial projects through its Seattle Services Portal, eliminating paper submittals.
Who Needs a Building Permit?
| Type | Required | Notes |
|---|---|---|
| Restaurant (Full-Service) | Required | Required for any new construction, change of occupancy, or interior structural alterations to the dining or kitchen space, as per Seattle Building Code §101.2. |
| Bar / Nightclub | Required | Required for interior build-outs, structural changes to support sound systems or stages, and alterations to plumbing for restrooms, per Seattle Building Code §101.2. |
| Food Truck | Not Required | Typically exempt; vehicles are regulated by the Washington State Department of Licensing, but a permit may be required for constructing a permanent service pad or utility hookups on site. |
| Coffee Shop / Café | Required | Required for tenant improvements, plumbing for an espresso machine or three-compartment sink, and electrical upgrades, as outlined in Seattle Building Code §105.1. |
See which restaurant types need this requirement — and which don't.
See Full Requirements →Field-by-Field Guide (28 Fields)
23 of 28 auto-filledProperty Address
textEnter the complete street address of the property where construction will occur, including suite or unit number if applicable, exactly as it appears on the King County Assessor's parcel record.
COMMON MISTAKE: Including a P.O. Box, omitting the city and zip code, or using a future business name instead of the physical lot address.
Zoning Classification
textEnter the official zoning code from the Seattle Zoning Code (e.g., 'NC3-85', 'LR2', 'SM-MU 45'), which dictates allowed uses, height, and setbacks, found via the Seattle Parcel Viewer or your Site Plan.
COMMON MISTAKE: Guessing the zone, using an outdated classification, or leaving it blank—this directly impacts project feasibility.
Property Owner Name
textEnter the legal name of the individual or entity listed as the owner on the recorded deed or title report; for an LLC, use its full registered name.
COMMON MISTAKE: Entering a tenant's name, a manager's name, or an abbreviated business name that doesn't match the deed.
Property Owner Phone
textProvide a direct phone number where the property owner (or authorized agent) can be reached during business hours for application questions.
COMMON MISTAKE: Providing a disconnected number, a tenant's number without authorization, or a number with an incorrect area code.
Property Owner Email
textProvide a valid, regularly monitored email address for the property owner or authorized agent to receive official correspondence and permit status updates.
COMMON MISTAKE: Using an invalid or inactive email address, which can cause you to miss critical review comments and deadlines.
Proof of Ownership or Authorization
textDescribe the attached document proving ownership or authorization to apply, such as a 'Recorded Deed,' 'Lease Agreement with owner signature,' or 'Authorization Affidavit.'
COMMON MISTAKE: Failing to attach the document, attaching an unrecorded deed, or using an expired lease without the required construction clauses.
Project Description
textProvide a concise, high-level summary of the project (e.g., 'Interior tenant improvement for a new full-service restaurant with kitchen, dining area, and two restrooms').
COMMON MISTAKE: Being overly vague (e.g., 'remodel'), copying the Scope of Work verbatim, or omitting the primary use (e.g., 'restaurant').
Detailed Scope of Work
textList all specific construction tasks in detail, such as 'Demolish non-load-bearing partition walls, install new plumbing rough-ins for 3-fixture restroom group, install Type I hood system, erect new demising walls with 1-hour fire rating.'
COMMON MISTAKE: Omitting critical systems (electrical, mechanical, plumbing), using generic terms like 'update kitchen,' or failing to mention if work is structural.
Construction Square Footage
textEnter the total area of new construction, addition, or alteration, measured in square feet from the exterior walls or the centerline of joint partitions.
COMMON MISTAKE: Reporting the entire building's area instead of only the area under construction, or incorrectly calculating the area, which affects permit valuation and fees.
Building Classification
textEnter the International Building Code (IBC) occupancy classification (e.g., 'A-2' for restaurant assembly, 'B' for business, 'M' for mercantile) from your architect or engineer.
COMMON MISTAKE: Using an incorrect or mixed occupancy without proper separation, which triggers major life-safety and code review issues.
ApronPrep auto-fills 23 of 28 fields from a single compliance interview — no re-typing, no guessing what the government expects.
Top 5 Building Permit Mistakes
1. Incomplete or Incorrect Contractor/Subcontractor Information
Leaving the contractor license number blank or entering an expired number is a top rejection trigger for Seattle Department of Construction & Inspections (SDCI). For example, entering '12345' instead of the full, verified 'CONT1234*ABCD' causes immediate review hold. This mistake adds 1-2 weeks as SDCI pauses to verify your contractor's standing before processing the application.
2. Miscalculating Valuation of Work
Underestimating the project valuation (even by accident) to lower permit fees is a serious error. If SDCI reviews your application and finds a $50,000 project listed at $30,000, they will reject it for fee evasion. You must base your valuation on the total fair market cost of labor and materials. This requires re-submission and adds 10+ business days to your timeline.
3. Omitting Required Supplemental Documents
Submitting the core application form without the required structural calculations, energy code compliance forms, or site plans is the most common reason for a 'not accepted' status. For instance, a deck permit application missing the lateral load calculations from a licensed engineer will not move forward. This omission forces a full resubmission cycle, adding 2-3 weeks to your schedule.
Skip the Paperwork on Your Building Permit
ApronPrep auto-fills 23 of 28 fields from one compliance interview.
No credit card required
Building Permit by City in Washington
| City | Fee Range | Timeline |
|---|---|---|
| Seattle | Contact SDCI for current fee schedule based on project cost and type | Varies based on project complexity and design review requirements; contact SDCI for specific estimates |
| Spokane | ||
| Tacoma |
Government Filing Fees
Contact SDCI for current fee schedule based on project cost and type
Timeline: Varies (typically 15-120+ business days depending on design review and inspection complexity)
Determine if design review approval is needed based on project type and location
Check the Seattle Department of Construction & Inspections (SDCI) website or contact them directly to confirm whether your restaurant project requires Design Review approval — this depends on zoning district, project cost, and square footage. Projects in certain urban villages or with significant exterior changes often trigger mandatory design review. This step is critical: skipping it causes automatic rejection and 2–3 week delays.
Prepare detailed construction plans and specifications
Compile sealed architectural and engineering drawings showing floor plans, electrical systems, HVAC, plumbing, fire-rated walls, and egress paths. Seattle requires plans stamped by a licensed architect or engineer if project value exceeds $50,000 or if you're modifying structural elements. Have your architect reference the current Seattle Building Code (2024 edition) on all sheets. Missing or non-compliant plan details are the #1 cause of permit rejections in Seattle.
Complete building permit application through Seattle Services Portal
Create an account on the Seattle Services Portal (permits.seattle.gov) and fill out the building permit application form — approximately 35–45 fields covering project description, estimated cost, contractor information, and property details. ApronPrep auto-fills 20+ fields using your restaurant information. Save your application as a draft; you'll submit the final version with attachments in the next step.
Where to Apply
Applications are handled by your local building department in each city. Select your city below for authority details, fees, and processing timeline.
Other Requirements You'll Need
This is one of 13 requirements for opening a restaurant in Washington.
ADA Compliance Self-Certification
federal
Alarm System Permit/Registration
local
Annual Report Filing
state
Application for Employer Identification Number
federal
See all co-required forms and how they connect to your compliance dossier.
See All RequirementsProcessing timelines vary depending on project complexity and completeness of your application. Per the Seattle Department of Construction and Inspections (SDCI) website, standard plan review typically takes 2–4 weeks for routine projects, but projects requiring additional review (electrical, plumbing, structural) or those in historic districts may take 6–12 weeks. To minimize delays, ensure all required documents are included with your initial submission and coordinate early if your project requires a Certificate of Approval for Landmark or Historic District.
Government filing fees for building permits in Seattle vary based on project scope and estimated construction cost. According to the SDCI fee schedule, fees are calculated using a tiered structure tied to the total project valuation—contact the Seattle Department of Construction and Inspections at (206) 684-8600 or visit their website to calculate your specific permit fee based on your project details. Not legal advice — verify current fee amounts directly with SDCI before submitting your application.
No, building permits are location- and project-specific and cannot be transferred to a different address or property. If your restaurant plans to relocate, you must apply for a new building permit for the new location that specifies the exact address, property characteristics, and scope of work at that site. Contact the Seattle Department of Construction and Inspections to confirm whether any portions of previous compliance work (such as a Certificate of Occupancy or inspections) can be referenced or expedited for your new location.
Building permits do not renew in the traditional sense—they expire if work is not substantially completed within a set timeframe, typically 180 days from issuance per Seattle Municipal Code. If your project extends beyond this period, you must apply for a permit extension before expiration; extensions are not automatic. Once your work is complete and passes all required inspections, you receive a final approval and do not need to renew the permit unless you undertake additional construction.
Seattle building inspectors verify that your completed work complies with the approved plans and applicable codes (electrical, plumbing, structural, fire safety, accessibility). Per SDCI guidelines, you must request inspections at specific stages (rough-in, final, etc.) and schedule them through the SDCI online system or by phone at (206) 684-8600. Inspectors will note any code violations; failing inspections require corrections and a re-inspection, which can add 1–2 weeks to your timeline. Ensure your contractor coordinates all inspections and that work aligns with your approved Certificate of Occupancy requirements before final approval.
About This Data
This guide is generated from ApronPrep's compliance dossier system, which uses 53 parallel AI authority experts to discover requirements, then downloads actual forms and generates field-level intelligence for each one.
For Washington specifically, we have analyzed compliance dossiers for 3 cities (Seattle, Spokane, Tacoma), generating Rich FILs (Form Intelligence Layers) with 28 form fields analyzed for this requirement. Fee data is sourced from actual county department fee schedules, not estimates.
Our data is verified against official government sources and updated when regulatory changes are detected. If you find an error, please report it — accuracy is our core commitment.
Sources
- State building code (locally administered), local building ordinances, state accessibility code
- Seattle — Building Department / Inspectional Services
- Tacoma — Building Department / Inspectional Services
This Form Is One of 60+ Requirements.
ApronPrep discovers every permit your city requires — including the ones generic checklists miss. Pick your city for the complete package.