Planning construction in Seattle? Here's what you need to know upfront:
- Permits are required for projects over $6,500 or those involving structural, electrical, or plumbing changes.
- Skipping permits can lead to fines, legal issues, or project delays.
- What needs a permit: Structural changes, major remodels, electrical/plumbing updates, basement renovations.
- What doesn’t need a permit: Painting, flooring, minor repairs, or basic landscaping.
- Permit costs: Start at $1,535.50 for projects valued at $100,001+.
- Approval times: Simple projects take 2-4 weeks; complex ones may take 3-6 months or longer.
Use Seattle’s online portal to apply, track progress, and schedule inspections. Hiring professionals or design-build firms can save time and prevent errors. Proper preparation ensures smoother approvals and fewer delays.
Seattle Department of Construction and Inspections - New Review Process

Seattle Permit Basics
Here's a breakdown of what you need to know about Seattle's building permit system.
When You Need a Permit
In Seattle, any construction project valued over $6,500 requires a permit. Key examples include:
- Structural changes: Removing walls, adding rooms, or expanding your home
- Major remodels: Kitchen or bathroom overhauls
- Electrical work: Installing new systems or making significant updates
- Plumbing updates: New installations or modifications
- Basement projects: Renovations or finishing work
These permits ensure projects meet safety standards and comply with city codes. For instance, a full kitchen remodel involving new wiring and plumbing updates might need multiple permits, with fees ranging from $500 to $10,000 depending on the scope [4].
When You Don’t Need a Permit
Some home improvement projects don’t require a permit. Here are a few examples:
Project Type | Examples |
---|---|
Cosmetic Updates | Painting, wallpapering, or replacing flooring (with no structural changes) |
Basic Maintenance | Minor repairs or replacing cabinets with similar ones |
Landscaping | Garden beds or pathways (as long as there's no major grading involved) |
If your project does require a permit, the next step is understanding how SDCI can help.
About SDCI

Once you know you need a permit, you'll work with Seattle's Department of Construction and Inspections (SDCI). They manage the city's permitting process and offer several tools to make it easier:
- Pre-application site visits (PASV) to address potential issues early
- An online system for tracking permits
- Technical support for complicated projects
- Plan reviews and inspections to ensure compliance
SDCI’s online portal allows you to apply for permits, track progress, and schedule inspections [6].
"Pre-application site visits identify issues early, reducing permit delays" [3].
Keep in mind, plan reviews can take weeks or even months, depending on how complex your project is and current demand [7]. Hiring professionals familiar with SDCI’s processes can help speed things up and ensure your project stays on track [5].
With SDCI’s resources, navigating the permit process becomes a lot more manageable.
How to Apply for Permits
Application Steps
Starting your Seattle construction permit application requires careful planning. Follow these steps using SDCI's online portal:
1. Pre-Application Phase
Begin by submitting a preliminary application through the SDCI portal. For more complex projects, request a Preliminary Assessment Report (PAR) to flag potential issues early. If your property is in a sensitive area, like steep slopes or wetlands, you’ll need to apply for Environmentally Critical Area (ECA) exemptions first.
2. Document Preparation
Prepare all necessary documents before scheduling your intake appointment. It’s a good idea to book your appointment as early as possible - even before your engineering plans are finalized - to avoid delays caused by scheduling backlogs.
3. Submission and Review
Once your application is submitted, you’ll get a project number to track its progress. Reviewers will then check for compliance with city codes.
Required Documents
Make sure you’ve gathered all the required documents before submission:
Document Type | Description | Purpose |
---|---|---|
Site Plan | Shows property layout, existing structures, and proposed changes | Ensures zoning compliance |
Floor Plans | Detailed drawings of each floor | Displays room layouts and dimensions |
Elevation Drawings | External views of the building | Highlights height and exterior design |
Engineering Plans | Includes structural calculations and material details | Details structural components |
Consultant Reports | Special studies, if applicable | Addresses specific site conditions |
Costs and Timeframes
Permit fees depend on your project’s value. For instance, in 2025, projects valued between $100,001 and $175,000 start at $1,535.50, with an additional $6.50 per $1,000 of project value [8]. For a $100,000 kitchen remodel, expect fees around $4,475 [1].
Typical review times vary by project type:
Project Type | Review Time | Notes |
---|---|---|
Simple Remodels | 2-4 weeks | No structural changes |
Medium Projects | 6-8 weeks | Minor structural modifications |
Complex Projects | 3-6 months | Major renovations/additions |
"Ensuring that all required documents are submitted correctly and that the project complies with all relevant codes can help avoid delays" [2].
Submitting a complete and accurate application is key to speeding up the process. Working with professionals who understand SDCI requirements can help you sidestep common mistakes and get it right the first time.
Solving Common Permit Problems
Permit delays in Seattle can often be avoided by understanding the usual challenges and addressing them early. This approach helps keep your project on track.
Why Permits Get Delayed
Based on SDCI data, nearly 95% of permit delays are caused by incomplete documentation and code violations [2]. Here's a breakdown of common issues and how they can affect your timeline:
Common Issue | Impact | Solution |
---|---|---|
Incomplete Documentation | 2-4 week delay | Submit a complete package with all forms |
Code Violations | 4-6 week delay | Have plans pre-reviewed by a qualified expert |
Zoning Conflicts | 6-8 week delay | Check zoning requirements before submission |
Environmental Issues | 8-12 week delay | Conduct proper studies to address ECA concerns |
Zoning conflicts, in particular, often require extra attention due to their complexity and potential to cause significant delays.
Fixing Zoning Problems
Start by using SDCI's online portal to confirm your property's zoning designation. Common zoning challenges include height limits, setbacks, lot coverage, and parking requirements.
If your property is in an environmentally critical area (ECA), additional steps will be required.
"If a project falls within a designated ECA, homeowners must apply for an exemption or take specific steps to mitigate environmental impacts before proceeding with standard permits" [3].
Once you've resolved zoning issues, you can focus on strategies to move your permit approval forward more efficiently.
Speed Up Your Permit
Here are three strategies to help streamline the process:
- Pre-Application Review: Projects that undergo this review are processed 40% faster than those that skip it [10].
- Professional Assistance: Working with design-build firms familiar with Seattle’s permitting process can help you avoid common mistakes and ensure compliance from the start [4].
- Online Tracking: Use the Seattle Services Portal to check your application status and respond promptly to any requests for additional information [9].
For 2025, SDCI has set new processing targets:
- Simple or medium-complexity permits: 2-4 weeks
- Complex permits: 8-12 weeks
Investing in thorough preparation and professional guidance often saves both time and money in the long run [10].
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Getting Professional Help
Dealing with Seattle's construction permits can be tricky, especially for more involved projects. Hiring professionals can often save you weeks - or even months - of waiting time, particularly for tasks like structural changes or meeting Environmental Critical Area (ECA) requirements.
Choosing Expert Help
Experts are especially useful for projects involving structural changes, environmental regulations, or multiple permits. When looking for professional assistance, prioritize firms with proven experience navigating Seattle's permit system and strong connections with the Seattle Department of Construction and Inspections (SDCI) [5].
Design-Build Advantages
Design-build firms combine design and construction services, simplifying the permitting process. They ensure your project complies with local regulations and handle all communication with SDCI. This integrated model helps speed up responses to SDCI and provides end-to-end project management.
"Design-build firms can coordinate all necessary permits, ensure design compliance with local regulations, and handle communications with the SDCI, providing a streamlined experience for homeowners" [2].
Fuller Living Construction Services

Fuller Living Construction focuses on Seattle's permitting process, offering services like pre-application assistance, permit management, and a project tracking system that keeps delays to a minimum and homeowners in the loop. Their design-build method tackles potential issues early, helping to prevent unnecessary slowdowns.
For more complicated permits, Fuller Living offers cost analysis and strategic planning. This level of expertise shows how professional support can make a challenging permitting process far more manageable.
While hiring professionals can simplify the experience, SDCI also provides tools and resources for homeowners who prefer to handle permits on their own.
Permit Tools and Information
Seattle's permitting process can feel overwhelming, but SDCI offers digital tools and resources to help make it smoother and reduce potential delays.
SDCI Online Tools
The SDCI online permit portal is your go-to platform for managing all permit-related tasks. Through the portal, you can:
- Submit applications and upload required documents
- Schedule inspections and track their progress
- Receive updates in real time
- Access and review digital records
To keep things running smoothly, make sure to upload all pre-application documents directly through the portal [2][6].
City Contacts
Got questions? Reach out to the Seattle Building Department at (206) 684-8850 or stop by City Hall at 600 Fourth Ave, Seattle, WA 98104.
If your project is more complicated - like those involving Environmental Critical Areas (ECAs) - it’s a good idea to schedule a consultation with department staff before submitting your application [6].
Track Your Permit
The SDCI portal also offers tracking features, making it easier to stay informed about your permit's progress:
- Check your application status
- Review correction notices
- Schedule and manage inspections
These tracking tools are especially useful for larger projects, helping you identify timing issues or potential delays early on [2][6].
While these tools streamline the process, working with a professional can make navigating permits even simpler.
Conclusion
Getting a permit in Seattle requires careful planning and attention to detail. On average, approval can take anywhere from 4 to 9 months, so it's crucial to plan ahead. Tools like the SDCI online portal and tracking systems can help you stay organized, and staff support is available to guide you through the process.
To keep things on track, make sure you understand the requirements, submit all necessary documents, take advantage of the SDCI tools, and seek professional assistance for more complex projects. Solid preparation can help you avoid unnecessary delays and keep your timeline intact.
SDCI staff are there to answer questions and offer guidance, making it easier to navigate the process while ensuring your project complies with Seattle's building codes and regulations.
If you have specific questions about the permit process, check out the FAQ section below for more details.
FAQs
Here are answers to some common questions about Seattle's construction permits to help you better understand the process.
How long does it take to get a construction permit in Seattle?
The time it takes to get a permit in Seattle varies based on the project's complexity and the workload at the Seattle Department of Construction and Inspections (SDCI). For standard residential projects, approval usually takes 4-9 months, while more intricate projects, especially those in environmentally critical areas (ECAs), can take over 12 months [3][6].
Project Type | Typical Timeline | Additional Notes |
---|---|---|
Basic Residential Remodel | 3-6 months | Quicker for straightforward replacements |
Major Home Addition | 6-9 months | Often requires multiple permits |
ECA Projects | 9-12+ months | Includes environmental review |
Simple Repairs/Updates | 2-4 weeks | Only basic permits needed |
What affects permit processing time?
Several factors influence how long it takes to process a permit, including the complexity of the project, accuracy of submitted documents, SDCI's workload, and whether environmental reviews are required. Responding promptly to SDCI requests and completing pre-application reviews can help avoid delays.
"Working with an experienced architect or design-build company can help streamline the process by ensuring all necessary documents are submitted correctly and on time" [3].
What are the costs?
Permit fees vary based on the size and scope of the project. Costs typically range from a few hundred to several thousand dollars [3][1].
What happens if I don’t get a permit?
Skipping permits can result in serious consequences, including:
- Stop-work orders, fines, or even the removal of unpermitted work
- Issues when selling your property, as unpermitted work can complicate the process
For help with permit-related questions, you can contact SDCI directly at (206) 684-8850 or use their online portal to track your application [2][6].