Port Townsend, WA · Jefferson County
THOW ADU Plan Review Certification Form
Licensed design professionals complete this certification for a Tiny House on Wheels proposed as an accessory dwelling unit when using the plan-review certification option.
What this form is
This form certifies that a Tiny House on Wheels proposed for use as an accessory dwelling unit meets Port Townsend’s listed construction standards. The city requires it with the permit application when the applicant chooses certification by a licensed design professional instead of review of the manufacturer’s plans by the Building Official. It asks for owner, unit, and professional details, standard-by-standard review answers, a signature, and a date.
Who needs it
Applicants using a licensed design professional to certify a proposed Tiny House on Wheels accessory dwelling unit need to include this form with their permit application.
How to submit it
Submit the form with your permit application. Submit it to the city department named on the form; check the city website for current contact details.
About notarization
This document is signed without a notary; the licensed design professional signs and dates the certification.
How to submit this form
- 1
Download The Form
Download the THOW ADU Plan Review Certification Form.
- 2
Complete The Form
Have the licensed design professional provide the requested owner, unit, and license details and answer the construction-standard questions.
- 3
Sign And Date
The licensed design professional signs and dates the certification.
- 4
Submit With The Permit Application
Include the form with the permit application if using the licensed professional certification option.
Frequently asked questions
- Do I need a notary for the THOW ADU certification form?
- No. The licensed design professional signs and dates the certification; the document does not call for a notary.
- How do I submit the THOW ADU certification form?
- Include it with the permit application if using the licensed professional certification option. The form does not provide a submission address or method.
- When is this certification form required?
- It is required with the permit application when the applicant chooses a licensed design professional to review or inspect the unit. It is not submitted when the Building Official reviews the plans.
- Who completes the plan review certification?
- A design professional, architect, or engineer licensed to practice in Washington State completes the form and certifies the review.
Need something notarized?
This THOW ADU Plan Review Certification Form doesn’t need a notary — but if you have another Port Townsend form that does, a commissioned online notary can help.