4. Plumbing, Mechanical and Electrical work WORK PROPOSED PERMIT NEEDED? WHAT TYPE OF PERMIT? Plumbing   Add a bathroom in a house Building Permit (RS), Residential Plumbing and Residential Electrical Replace plumbing fixtures in same location Plumbing Permit (PT) Replace water lines Plumbing Permit (PT) Install Water Meter Water Meter installation is included in the Building Permit (RS). Call (503) 823-1526 when marked and ready for installation.   Mechanical   Replace a furnace Mechanical Permit (MT) Decommission oil tank If residential property, call Environmental Soils staff at (503) 823-6820 for permit requirements. If commercial property, call the Fire Marshal at (503) 823-3712 for permit requirements. Contact Oregon Department of Environmental Quality (DEQ) or call (800) 452-4011. Air conditioner Mechanical Permit (MT), Electrical Permit (ET)   Electrical   Replace a service panel Electrical Permit (ET) Add an outlet Electrical Permit (ET) Air conditioner Electrical Permit (ET), Mechanical Permit (MT)