ADU Permit Online Portal Guide in Portland, Oregon
Understand the requirements, gather the right documents, and generate a submission-ready packet for your adu permit in Portland, Oregon.
Key Facts
- Permit required
- Yes
- Submission method
- Online
- Typical fee range
- $110 – $950
- Review time
- Varies — contact authority
- Inspections
- 6 inspections required
Portland Permits
Verify before submission5-step online submission process — account registration required[1][2]
Open PortalStep 1: Create Account
[3]Register on the Portland Permits portal.
What You Need
- Email address
Common Mistakes
- Using a personal email instead of business email
Portal steps may change without notice. Always confirm the current process at Portland's online portal.
Generate your permit packet
Get a personalized ADU permit packet for Portland, Oregon — tailored to your project.
- Required forms: Permit Application, and more
- Pre-filled templates: Permit Cover Sheet
- Fee breakdown: $110–$950 estimated total
- Step-by-step Portland Permits portal submission guide
- Inspection prep checklist (6 items)
- Personalized for your specific project details
No account required · Free to get started
Required Documents
Portland requires the following documents for this permit application.
Permit Application
Completed building permit application form
Site Plan
Plan showing existing structures, proposed ADU, and setbacks
Architectural Plans
Floor plans, elevations, and sections of the proposed ADU
Structural Calculations
Engineering calculations for foundation and framing
Utility Connection Plan
Plan showing water, sewer, and electrical connections
Energy Compliance
Energy compliance documentation per state energy code
Fees and Timeline
Fee Breakdown
| Fee | Range | Confidence |
|---|---|---|
| Building/Electrical Permit Fee | $220 – $950 | Estimated |
| Plan Review Fee | $110 – $618 | Approximate |
Fees are estimates and may change. Verify current fees with Portland.
Inspections Required
Foundation Inspection
Verify foundation per approved structural plans
Framing Inspection
Verify wall, floor, and roof framing
Electrical Rough-In
Verify wiring, panel, and circuit layout
Plumbing Rough-In
Verify supply and drain installation
Insulation
Verify insulation installation per energy code
Final Inspection
Complete inspection of finished ADU
Authority Sources
Data on this page is sourced from official records published by the permitting authority. Always verify requirements directly before submitting.
Verified February 15, 2026
Verified February 15, 2026
Verified February 15, 2026
Frequently Asked Questions
- Do I need a adu permit in Portland?
- Yes. Portland 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 Portland?
- Processing times in Portland vary depending on project complexity and current review volume. The process involves 5 steps. Contact Portland Development Services for current timelines.
- What documents are required for a adu permit in Portland?
- Portland requires 6 documents including Permit Application, Site Plan, Architectural Plans, Structural Calculations, and others. See the full list above for details.
- What happens if I build without a adu permit in Portland?
- Building without a permit in Portland 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 Portland?
- Yes. PermitMagic generates a submission-ready packet tailored to Portland'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 Portland?
- ADU permit fees in Portland typically range from $110 to $950, depending on project scope. Fees may include building permit, plan review, and technology surcharges. Verify current fees with Portland.
Ready to prepare this permit correctly?
Start your adu permit plan for Portland, Oregon and generate a submission-ready packet with all required documents and authority references.
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