When You Need a Permit in Snohomish County
In Snohomish County, building permits are required for work that changes the structure, plumbing, electrical, or mechanical systems of your home. Here's a clear breakdown.
Work That REQUIRES a Permit
- Removing or moving walls (especially load-bearing)
- Adding or relocating plumbing (new sink, shower, toilet)
- Electrical panel upgrades or new circuits
- Room additions or bump-outs
- ADU construction
- Deck construction (over 200 sq ft or 30+ inches above grade)
- Window or door size changes (altering the opening)
- Re-roofing (in some jurisdictions)
- Water heater replacement
- HVAC system installation or replacement
- Converting a garage to living space
Work That Generally Does NOT Need a Permit
- Painting (interior and exterior)
- Replacing cabinets (same location)
- Installing new countertops
- Replacing flooring
- Replacing fixtures in the same location (faucet, light fixture, toilet)
- Minor drywall repairs
- Replacing appliances (same location, same fuel type)
- Landscaping
- Fencing under 6 feet
Permit Costs and Timeline
- Residential building permit: $200-$2,000+ (based on project value)
- Plumbing permit: $100-$300
- Electrical permit: $100-$300
- Mechanical (HVAC) permit: $100-$300
- Review timeline: 2-4 weeks for standard projects, 4-8 weeks for complex projects
Why Permits Matter
- Safety: Inspections ensure work meets building codes and is safe for your family
- Insurance: Unpermitted work may not be covered by your homeowner's insurance
- Resale: Unpermitted work must be disclosed and can reduce your home's value or kill a sale
- Fines: Working without required permits can result in fines of $500-$5,000+, plus the cost of tearing out and redoing work
- Liability: If unpermitted work causes injury or damage, you face serious legal exposure
Frequently Asked Questions
Residential building permits in Snohomish County typically cost $200-$2,000+ depending on the project value. Plumbing and electrical permits are additional at $100-$300 each.
Standard residential permits typically take 2-4 weeks for review. Complex projects may take 4-8 weeks.
You can face fines of $500-$5,000+, be required to tear out completed work, and have difficulty selling your home. Unpermitted work may also void your homeowner's insurance.
A licensed general contractor should handle the entire permit process as part of your project, including applications, plan submissions, and scheduling inspections.
Ready to Get Started?
NW General Contractor serves Everett and all of Snohomish County. Contact us for a free, no-obligation estimate on your project.