Oregon Building Codes and Administrative Provisions
Code framework
The Oregon Building Codes Division (BCD) publishes statewide specialty codes, including the Oregon Mechanical Specialty Code, Oregon Residential Specialty Code, Oregon Electrical Specialty Code, and Oregon Fuel Gas Code. Local jurisdictions issue permits and perform inspections, but amendments are limited and must be approved. The code official has authority to interpret the code and require corrections. Manufacturer instructions are part of the approved installation.
Permits and inspections
A permit is generally required for new HVAC equipment, replacement of equipment, new or altered ductwork, and gas piping. Minor repairs may be exempt, but verify with the local authority. Inspections occur at rough-in and final; cover work only after approval. Commercial projects may require plan review; residential permits are often issued over the counter. Keep approved plans on site.
Worked example
A homeowner wants a furnace in a converted garage. You need a mechanical permit, check combustion air, verify venting category and termination, and confirm platform clearances. The final inspection checks the permit, equipment label, gas piping, vent, and combustion air.
Traps
Assuming like-for-like replacement never needs a permit; starting before permit issuance; ignoring local amendments; and treating manufacturer instructions as optional.