Oregon Permit & Stamping Requirements
Requirements vary by region, code cycle, seismic zone, and wind or snow load. Here is what typically drives design for Oregon projects.
What Drives Design in Oregon
Oregon projects are governed primarily by seismic lateral demand.
- ✓ Seismic lateral analysis per ASCE 7
- ✓ State energy code compliance report
- ✓ Structural Engineer (SE) seal where required
Exact code edition and local amendments vary by city and county. We confirm the specific requirements for your address before drafting.
Code in effect in Oregon
Oregon adopts its building codes at the state level, and every city and county must enforce them. Commercial and larger buildings follow the 2025 Oregon Structural Specialty Code, based on the 2024 International Building Code, effective October 1, 2025 and mandatory since April 1, 2026 after a six-month phase-in. One- and two-family homes follow the 2023 Oregon Residential Specialty Code, based on the 2021 International Residential Code, mandatory since April 1, 2024.
What to plan for
- ✓ The code is the same statewide, so a city cannot write its own building code, but local departments still review and inspect your drawings.
- ✓ Oregon's residential and commercial codes are on different International Code editions (2021 for homes, 2024 for commercial work), so the right one depends on your building type.
- ✓ The Cascadia subduction zone drives seismic design in western Oregon, and the state has interim amendments for snow loads on repairs and alterations and for wind speeds in its special wind regions.
Code information last verified October 2026. Codes change, so we confirm the edition in force for your address before drafting.
Frequently asked questions about Oregon permits
Which Oregon code applies to my house?
The 2023 Oregon Residential Specialty Code, based on the 2021 International Residential Code. It has been mandatory since April 1, 2024, after a six-month phase-in that began on October 1, 2023.
What changed for commercial projects in Oregon?
The 2025 Oregon Structural Specialty Code, based on the 2024 International Building Code, took effect October 1, 2025 and became mandatory on April 1, 2026. Drawings for commercial projects now follow it.
Sample Work & Other States
Foundation Plan
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Roof Framing Plan
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