Seattle does allow certain types of work to move forward without a permit as long as your project meets some specific conditions and you’re not in an environmentally critical area.
Here’s a breakdown of what usually doesn’t need a permit:
Work that usually doesn’t require a permit
Minor Repairs or Alterations
No permit needed if:
- The work is under $6,000 in any 6-month period (based on fair market value)
- You’re not altering structural supports, exits, fire protection, or reducing ventilation/light
Examples include:
- Patching drywall
- Repainting or cleaning
- Swapping cabinets or tiling
- Insulating existing walls
- Repointing chimneys
- In-kind repair of damaged finishes
Detached Structures and Landscaping
No permit needed if:
- A one-story shed or playhouse under 120 sf, built on a slab (not a full foundation)
- Retaining walls under 4 ft high (with no surcharge or steep slope concerns)
- Fences under 8 ft high, with no concrete or masonry posts over 6 ft
- Arbors or landscape structures under 120 sf
Flatwork, Roofs, and Small Additions
Also typically exempt:
- Patios, platforms, or walkways less than 18” above grade
- Window awnings under 54” projection, attached to an exterior wall
- Roof replacement, if you’re not changing structure or performance
- Dish/panel antennas under 6.56 ft (2m) in size
- Underground storage tank removal (though a Seattle Fire permit is still required)
A few important notes
These exemptions only apply if your property isn’t in an Environmentally Critical Area (like a steep slope or shoreline).
Even if your project is permit-exempt, it must still:
- Follow Seattle’s building codes
- Not violate zoning rules or land use regulations
- Be done safely and in accordance with product specifications
Also note, certain work might still require other separate permits, like electrical, plumbing or fire department approvals, even if a building permit isn’t required.
Where can I find the full list?
You can find the full list of exempt work in Seattle Residential Code 2018 Section R105. It’s a helpful reference when planning small projects or figuring out whether to call in a professional.
Not sure if your project qualifies?
We help clients understand what’s exempt, what’s not, and what’s smart to do either way. If you’re unsure whether your project requires a permit or want help designing it right from the start, reach out. We’re happy to help.