Minor labels

​Plumbing minor label scope of work​​​​​

​Residential installations

  • Repair, replacement, or maintenance of water heaters, including water heater conversions. 
  • Alteration of parts of an existing plumbing system not exceeding three fixtures, or 20 feet of new piping or both provided the work is "accessible" to an inspector; or 
  • Repair or replacement of concealed freeze-damaged or leaking parts of an existing plumbing system not exceeding three fixtures, or 20 feet of new piping or both.
  • Plumbing fixtures include, but are not limited to, bathtubs, bidets, showers, sinks, and water closets. 
  • Cross-connection control devices are not considered minor plumbing installations and are excluded under these rules.

Commercial installations

  • Accessible plumbing repair and maintenance; 
  • Replacement of up to three accessible plumbing appliances, appurtenances or fixtures as defined in the Plumbing Specialty Code; or 
  • Replacement of up to 20 feet of plumbing piping. 
  • Replacement of a water heater requires a Journeyman Plumbers (JP) license.

​Plumbing minor label FAQs

Plumbing OAR 918-780​ regulating the minor label program.

Only licensed plumbing contractors may buy plumbing minor labels. ​Plumbers licensed under ORS chapter 693 may use labels. The installation may not exceed the scope of the license.​

A plumbing minor label may be used on a jobsite with existing permits if the work is within the scope of work permitted by the minor label rules and is done by a contractor who does not have an existing plumbing permit for that jobsite.

A contractor may use only one minor label per project at a jobsite. Jobsite is defined as the address of the home, apartment, or commercial building.

Contractors are allowed to perform a number of installations, but contractors may not use a minor label to perform any installations that are outside the scope of their licenses.​​​​

Only if the installations involved are within the scope of the minor label rules. For example, the rules allow the repair or replacement of up to three fixtures. Fixtures are defined to include, but are not limited to, bathtubs, bidets, showers, sinks, and water closets.​​​​

No, apprentices cannot work under a minor label. They can observe, but cannot perform any of the work. Only licensed installers (JP or WHI) may use the plumbing minor labels.​​​

​​​​​​​Did you know?

  • Contractors must have a PB (plumbing business) and an LMS (electrical limited maintenance specialty contractor) license to install electric water heaters (see below).
  • Contractors not qualifying for an LMS license must subcontract with an electrical contractor for the water heater electrical connection.
  • When reporting installations (online), contractors must specify if the water heater install is GAS or ELECTRIC.
  • Water Heater Installers (WHI) are limited to working on one- and two-family dwellings under the Minor Label Program. They cannot perform work on commercial building, including apartment complexes. A Journeyman Plumber (JP) license is required to perform commercial installations.
  • You must have both an LMS and PB license to use WHI installers.​​​​​
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