Kirkland DADU Permits: Registration, Plans and Review
Kirkland DADU planning includes the building application, ADU registration and site-specific review. The city offers both custom-plan and pre-approved-plan paths; choosing a registered design does not remove the property’s approval requirements.
Sources checked November 5, 2026. Confirm the requirements for your parcel with its permitting authority.
Which design path are you considering?
| Path | What to establish early |
|---|---|
| Custom design | The site envelope, coordinated plans and applicable review package. |
| Registered pre-approved DADU design | The licensed design, registration ID and required site-specific documents. |
Kirkland’s ADU Toolkit links to the two routes and related permitting resources. Compare the design against the property before deciding which path has the most useful starting scope.
Official guidance: City of Kirkland ADU Toolkit.
What does the current pre-approved-plan guide require?
The city’s detailed guide calls for ADU registration sent for county recording, with the recording fee paid before the certificate of occupancy. It also identifies a site plan, the pre-approved design registration ID, plumbing information and applicable survey or geotechnical documents.
Keep the ADU registration status beside the building application. The plan registration ID identifies an approved design; the property’s ADU registration is a different record. Name both clearly in the project checklist.
Official guidance: Kirkland guide to using a pre-approved DADU design.
How do building and fire reviews affect a detached home?
Kirkland’s building and fire guidance describes the principal-home-plus-one-DADU scenario as two one-family dwellings with fire separation evaluated between them. Confirm the applicable permit scope for the proposed new building and any work to the existing home.
The current pre-approved-plan guide also addresses site-specific fire review and a separate fire permit where sprinklers are installed. Give the fire and water questions a responsible designer rather than leaving them as an unexplained allowance in the construction estimate.
Official guidance: Kirkland building and fire-code scenarios, Kirkland guide to using a pre-approved DADU design.
What should you prepare before a permit discussion?
- The property records and proposed cottage location.
- The selected custom or pre-approved plan path.
- Water, sewer and access information.
- The registration and application documents relevant to the chosen route.
TimberworX offers a free Kirkland DADU consultation. Detailed site research, design and budgeting are paid preconstruction services. Agree which documents and approvals will be developed before moving into the detailed scope.
A few things to know
Does a pre-approved plan replace the property’s ADU registration?
No. The current program guide identifies property ADU registration as a separate requirement.
Is every pre-approved-plan application automatically expedited?
No. The program includes site and utility qualifications, explained in the companion guide.
Keep planning
Kirkland Pre-Approved DADU Plans: Costs and Conditions
Kirkland’s pre-approved DADU program includes a designer license up to $1,000 and site qualifications for expedited review. See what remains to approve.
Do you need a survey for a DADU?
Understand how a DADU site plan differs from a survey and which property information supports design and permit review.
What permits do you need for a DADU?
A practical DADU permit checklist covering site plans, building review, utilities, trade permits and final inspections.