Eastside DADU Permit Costs: Duvall and Bothell Examples
Public fees are one part of a DADU budget. Duvall and Bothell publish different fee structures, and Kirkland’s pre-approved plan license is a separate design-related charge. Use these examples to check an estimate’s inclusions, not to infer an all-in construction price.
Sources checked November 5, 2026. Confirm the requirements for your parcel with its permitting authority.
What published charges can you verify?
| Authority or program | Published example | What it represents |
|---|---|---|
| Duvall, 2026 schedule | Building plan review at 65% of the building permit fee | A review charge in addition to the building fee. |
| Bothell, 2026 checklist | $231 planning review; $834 site review and inspection for a new building | Selected categories, not every public charge. |
| Kirkland pre-approved plan program | Designer license up to $1,000 | Plan licensing, not the site design, permit or build. |
The dedicated local guides link to each source and explain conditions. These amounts should not be added together: they belong to different jurisdictions and programs.
Official guidance: Duvall adopted 2026 fee schedule, Resolution 25-11, Bothell ADU checklist with 2026 fees, Kirkland pre-approved DADU plan program.
How should an estimate separate public and private work?
- City or county application, review and issuance charges.
- Utility-provider certification and connection charges.
- Survey, design, engineering and other professional work.
- Private site preparation and service installation.
- The dwelling construction and agreed finish scope.
Ask the estimate to label each line as included, excluded, an allowance or still unconfirmed. This makes a change to the utility approach visible instead of burying it in a total that appears more certain than its assumptions.
What can change the budget between two nearby properties?
Compare a city-reviewed lot with an unincorporated parcel and the approval path may change. Compare a simple site with one needing flood or complex drainage work and the private work can change. Compare a service connection already supported by provider information with an untested assumption and the certainty is different.
Use the same floor area, finish assumptions and handoff scope when reviewing proposals. Identify what remains for the owner to arrange. A building-only price and a complete project estimate answer different budget questions.
How do you get a TimberworX construction estimate?
The initial consultation is free. TimberworX offers ballpark estimates for qualified projects; detailed design and budgeting are paid preconstruction work. The site and scope need enough investigation for the estimate to state meaningful inclusions.
This guide does not publish an invented construction range. Bring the parcel, desired floor area and available site and utility records so the next estimate can be grounded in the actual property.
A few things to know
Can these fees be used as a total build price?
No. They describe selected public or plan-license charges.
Should I add the Duvall and Bothell figures together?
No. They are examples from different authorities, not one property’s fee schedule.
Keep planning
Duvall DADU Permit Fees: What Will You Pay?
Understand Duvall’s 2026 DADU permit budget, including the 65% building plan-review charge, pre-application fee and separate project charges.
Bothell DADU Permits: Documents, Utilities and Fees
Bothell’s DADU application needs address assignment, utility availability and fire-flow information. See the permit sequence and 2026 fee categories.
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.