The form takes 15 minutes to complete. Permits are issued after payment.
When a residential mechanical permit is needed
Mechanical permits include permits for all HVAC (heating, ventilating, air conditioning). Mechanical permits also include permits for gas piping, ductwork, furnaces, heat pumps or air conditioning condensing units and mini-split permits.
You need a mechanical trade permit to:
- Install or change any part of a heating or cooling system that has duct work or must be vented into any kind of chimney or vent
- Install, alter or repair gas piping (indoor or outdoor) between the meter and an appliance or a natural gas line
- Install a wood stove or fireplace insert
- Install a fuel oil tank
Even if a building permit is not needed, the work will need an mechanical permit. Read more about trade permits and when a mechanical permit is needed.
You may also need an electrical and/or plumbing permit.
For new townhouse projects with three or more units, each unit needs a mechanical permit.
Contact the Oregon Department of Environmental Quality at (503) 229-5263 to decommission an underground oil tank.
Contact the Oregon Department of Environmental Quality at (503) 229-5982 to remove asbestos.
Outdoor mechanical equipment is not allowed to be in the required zoning setback. This includes:
- Outdoor air conditioner units
- heat pumps
- pool heaters
To find out your setback, call Planning and Zoning at (503) 823-7526.
Who can do the residential mechanical work
If not doing the work yourself, you can hire a contractor. Contractors must have a license to work in Oregon. The Oregon Construction Contractors Board (CCB) issues licenses to contractors. The permit application and their company materials must list the license number. Need help finding a contractor? The CCB website has good tips on how to search for one.
Apply for a residential mechanical permit
If plans are not needed, you can get residential mechanical permits online through Development Hub. If you are hiring a contractor, they should already be set up in our system to pull the permit for you.
You can also email your completed application.
Permits not available online:
- Install A/C
- Install heat pumps
- Install generators
These permits need a site plan with the mechanical permit application. Call the trade permits help line if you have questions about getting a permit.
Get ready for a residential mechanical inspection
Call for an inspection before covering any gas piping or ductwork. You will need a final inspection to close out the permit.
Residential mechnical inspections, results and corrections
To schedule an inspection, call the automated inspection request line. You will need your IVR or permit number and the three digit code for the inspection.
If you got your permit online through Development Hub, you can schedule your inspection online too.
Get the results of the inspection online by searching for your permit on Portland Maps on the following day.
Not approved - there are many reasons why the work did not get approved:
- no access - the inspector may not have been able to inspect the work
- incomplete work
- code violations
The inspector will list the corrections needed on the inspection report.
Call for a reinspection after making the corrections. Use the same three digit inspection code.
If you make the corrections the same day wait until 5 pm to request a reinspection. The inspector needs to enter their results before you can schedule the reinspection.
There is a reinspection fee charged for more than one reinspection for a single issue. Read more about residential permit inspections.
Apply for a trade permit extension or a trade permit reactivation
Contact mechanical inspectors
If you have questions before your inspection, you can talk to an inspector. The inspectors' name, region, and phone numbers are listed on the the 1 & 2 family inspector area map.
Because of vacation or illness, your inspector may be different than the one listed on the map. If you have questions after your inspection, find out which inspector to call. Their contact information will be on the inspection results and on Portland maps.