Kitsap County DCD permit guide
Do you need a permit for a home addition in unincorporated Kitsap County?
Quoted from Kitsap County DCD's own pages, with the date we read them: October 13, 2026.
Short answer
Permit required
Kitsap County DCD's "Do I Need a Building Permit?" tool lists additions as a project type, and its answer is "Permit Required" for adding square footage, residential or commercial. A structural remodel, interior or exterior, also comes back "Permit Required". Source [1]
The rule, quoted
The tool's answer for the project type "Additions (adding square footage)":
Permit Required — adding square footage (Residential & Commercial).
The tool's answer for "Remodel — Structural (interior/exterior)":
Permit Required (interior & exterior)
What to submit
The County says each project type has "its own set of required documents and drawings", and that its intake checklists show the documents you will need, "such as a site plan, floor plans, and structural details". The checklists are linked from its Permit Pathways page. Source [2]
Worth knowing
- The County's Start Here page says "Removing trees, building a shed, or adding to your home may require permits." Source [3]
- The tool notes you "may still need plumbing, electrical, or mechanical permits, unless your project is specifically exempt." Source [1]
- The tool also says it is "provided for general information only" and "was developed in collaboration with AI tools, with significant input and oversight by staff." Confirm anything that matters with DCD. Source [1]
Sources
Where this comes from
Compiled from Kitsap County DCD's published rules; last checked
JKM pulls the permit as part of the job
Call Ian Laughlin at (206) 226-1988, or send the address and the scope. We find the right office and take it from there.