Kirkland ADUs
How to permit an ADU or pre-approved DADU in Kirkland
Kirkland allows up to two ADUs on a property, subject to current development standards. A pre-approved detached ADU design can reduce building-design work, but it does not eliminate site review.
Reviewed against official Kirkland sources · August 2026Choose the project type
- Attached ADU within or added to the main house.
- Detached ADU using a custom design.
- Detached ADU using Kirkland's pre-approved plan program.
The site is still unique
Even a pre-approved design needs a site plan and site-specific review. Surveys, geotechnical information, trees, utilities, access, drainage, and critical areas can still control placement and cost.
Prepare the required package
- MyBuildingPermit account and application.
- Site plan with registration ID for a pre-approved design.
- Supplemental building information.
- ADU registration application.
- Plumbing worksheet.
- Survey and geotechnical report when applicable.
- Rodent-abatement documentation when required.
Action plan
What to do next
- 1
Confirm current ADU count, size, setbacks, and parking rules.
- 2
Compare custom and pre-approved design paths.
- 3
Test utilities, access, trees, and critical areas before buying plans.
- 4
Budget impact and utility charges under the current fee schedule.
- 5
Record the ADU documents required after approval.
Official resources