ADU Permit Requirements in Tacoma, Washington

Permit Process

Follow these steps to submit your permit application through City of Tacoma.

1. 1

   Pre-Application Consultation

   Discuss project with Planning staff to identify zoning compliance, code requirements, and application needs

2. 2

   Application Intake & Completeness Review

   Submit application with all required documents; staff verifies completeness

   You'll need: Site Plan, Architectural Plans, Building Elevations, Property Title or Deed, SEPA Environmental Checklist

3. 3

   Development Review Process

   Interdepartmental review including Planning, Building, Fire, Utilities, and Environmental Health

   You'll need: Mechanical Plans, Electrical Plans, Plumbing Plans

4. 4

   Permits Approved & Issued

   Building permits and any conditional use permits approved and ready for construction

5. 5

   Construction & Inspections

   Builder conducts construction with scheduled inspections at key milestones

6. 6

   Final Inspection & Certificate of Occupancy

   Final comprehensive inspection and issuance of Certificate of Occupancy

Fees and Timeline

Authority Sources

Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.

Frequently Asked Questions

Do I need a adu permit in Tacoma?

Yes. Tacoma requires a adu permit for this type of project. Submitting without a permit may result in fines, required removal, or complications when selling your property.

How long does adu permit approval take in Tacoma?

Processing times in Tacoma vary depending on project complexity and current review volume. The process involves 6 steps. Contact Tacoma Development Services for current timelines.

What documents are required for a adu permit in Tacoma?

Tacoma requires 8 documents including Site Plan, Architectural Plans, Building Elevations, Mechanical Plans, and others. See the full list above for details.

What happens if I build without a adu permit in Tacoma?

Building without a permit in Tacoma can result in stop-work orders, fines, required removal of work, difficulty selling your property, and insurance complications. It is strongly recommended to obtain proper permits before starting work.

Can PermitMagic help prepare my adu permit submission in Tacoma?

Yes. PermitMagic generates a submission-ready packet tailored to Tacoma's requirements, including a document checklist, workflow steps, and authority references. Start a permit plan to get your personalized packet.

How much does a adu permit cost in Tacoma?

ADU permit fees in Tacoma typically range from $2,250 to $4,950, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Tacoma.

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