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Mechanical Code Program

The division works with building officials, technical committees, advisory boards, and the public to adopt, amend, and interpret the Oregon Mechanical Specialty Code (OMSC). This code applies to the design, installation, alteration, and inspection of mechanical systems that are permanently installed, and those systems used to provide control of environmental conditions and related processes within buildings.

Program news and updates

2019 Oregon Mechanical Specialty Code (OMSC) Adoption - Follow the adoption process.

Adopted codebook


The following are supplemental amendments adopted as part of the code and became effective on the date specified:


The following are corrections to the published codebook:

Code adoption information

The following are summaries of the 2014 code adoption:

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