HVAC Permit in Portland, Oregon
Permit required
Yes, a permit is required
Before working on a heating or cooling system, installing or modifying any system with ductwork, installing or changing a system that vents into a chimney or exhaust vent, installing or altering gas piping, installing a wood stove or fireplace insert, or installing a fuel oil tank.
By Mario Bailey, verified against official sources
Quick answer
Portland requires a residential mechanical permit for heating and cooling work with no size or capacity carve-out published. The city lists HVAC systems, gas piping, ductwork, furnaces, heat pumps, air conditioning condensing units, and mini-split systems as common projects that require one, and states plainly that a mechanical permit is still required even if a building permit is not. Gas piping work between the meter and appliances is covered, indoors and outdoors. For new townhouse projects each unit requires a separate mechanical permit.
Who is pulling this permit?
Apply yourself
Hire it out
Before you sign, ask the contractor:
- Who pulls the permit, you or me, and is the permit fee included in the bid?
- Which inspections will this job need, and who meets the inspector on site?
- Is your contractor license active in this locality, and under which business name?
When a permit is usually needed
Before working on a heating or cooling system, installing or modifying any system with ductwork, installing or changing a system that vents into a chimney or exhaust vent, installing or altering gas piping, installing a wood stove or fireplace insert, or installing a fuel oil tank.
What an HVAC permit costs in Portland
How to apply in Portland
A residential HVAC (mechanical) permit application must identify the covered equipment and scope of work, since installing, altering, or replacing a heating or cooling system is regulated work that cannot start until the application is submitted and the permit issued. The equipment itself must be picked by a real sizing calculation rather than a rule of thumb.
What most HVAC permit applications include:
- A mechanical permit is required before anyone may install, alter, repair, remove, convert, or replace a heating, ventilating, or air conditioning system regulated by the code, and the work may not begin until the application is submitted and the permit is issued (IRC R105.1).
- The application identifies the specific equipment being installed, such as a furnace, heat pump, or air conditioner, since the unit must be installed according to its listing and the manufacturer's installation instructions (IRC M1401.1).
- The proposed equipment location must leave the clearances needed to clean coils and replace filters, blowers, motors, and controls after installation (IRC M1401.2).
- The application carries the equipment sizing basis: ACCA Manual J building loads and Manual S equipment selection, or another approved sizing method, not a rule of thumb (IRC M1401.3).
- For a split system, the work covered by the permit includes refrigerant suction line insulation, since the piping is inspected against that standard once installed (IRC M1411.6).
General submittal guidance from International Residential Code (IRC), 2021 edition, Chapter 1 (Permits) and Chapter 14 (Heating and Cooling Equipment and Appliances). Source. Portland Permitting & Development sets the exact checklist for Portland.
Where to apply in Portland:
Portland Permitting & Development
- Development Services Center, 1900 SW Fourth Avenue, First floor lobby, Portland, OR 97201
- Phone: 503-823-7300
- Email: permittingservices@portlandoregon.gov
Inspections and closing out your permit
Mechanical work gets a rough in inspection after the ductwork, refrigerant lines, and gas piping are in but before they are covered or concealed, followed by a final inspection that confirms the equipment operates correctly and its clearances, combustion air, and condensate disposal are in place. A straight equipment changeout with no new ductwork commonly gets a single final inspection instead of a separate rough in trip.
- Rough inspection of the mechanical and gas systems must be made before the work is covered or concealed, before fixtures or appliances are set or installed, and before the framing inspection (IRC R109.1.2).
- Where a cooling coil is added to an existing warm air furnace, the rough in confirms the coil is not installed upstream of the heat exchanger unless the furnace is listed for it, and that the blower can handle the added static pressure (IRC M1411.2).
- The rough in and final both confirm the appliance access opening and working space are large enough to service the unit (IRC M1305.1).
- At final inspection, the inspector verifies the equipment has adequate combustion air, with openings kept clear for the distance the code requires (IRC M1402.3).
- Final inspection also checks that the condensate line drains to an approved point of disposal with the required slope and does not create a nuisance (IRC M1411.3).
- For a straight equipment changeout with no new ductwork, many permit offices require only a single final inspection, while a new installation still gets a rough in inspection before the final (common local inspection practice).
Schedule each inspection in advance and pass the final before you use the work or close the permit. Request inspections through the Portland permit portal or by phone at 503-823-7300.
Inspection sequence from International Residential Code (IRC), 2021 edition, Section R109 (Required Inspections) and Chapter 14 (Heating and Cooling Equipment and Appliances). Source. An open permit left un-inspected can surface later in a title search or home sale.
Your HVAC Permit checklist for Portland
- Confirm the requirement. Yes, a permit is required. Usually needed: Before working on a heating or cooling system, installing or modifying any system with ductwork, installing or changing a system that vents into a chimney or exhaust vent, installing or altering gas piping, installing a wood stove or fireplace insert, or installing a fuel oil tank.
- Budget the fee. Mechanical Permit Fee Schedule for the City of Portland, effective July 10, 2026, One & Two Family Dwelling Fees: minimum fee $167.00. Line items include air handling unit $44.00, air conditioning (site plan required) $44.00, alteration of existing HVAC system $51.00, boiler or compressors $51.00, heat pump (site plan required) $84.00, install or replace furnace or burner including ductwork, vent, and liner $91.00, install, replace, or relocate suspended, wall, or floor mounted heaters $44.00, vent for appliance other than furnace $38.00, exhaust fan with single duct (bath fans). A 12% State of Oregon surcharge applies. Official fee schedule.
- Apply. A residential HVAC (mechanical) permit application must identify the covered equipment and scope of work, since installing, altering, or replacing a heating or cooling system is regulated work that cannot start until the application is submitted and the permit issued. The equipment itself must be picked by a real sizing calculation rather than a rule of thumb. Start at the Portland permit portal.
- Keep the office details handy. Portland Permitting & Development. Phone: 503-823-7300. Address: Development Services Center, 1900 SW Fourth Avenue, First floor lobby, Portland, OR 97201.
- Plan for inspections. Mechanical work gets a rough in inspection after the ductwork, refrigerant lines, and gas piping are in but before they are covered or concealed, followed by a final inspection that confirms the equipment operates correctly and its clearances, combustion air, and condensate disposal are in place. A straight equipment changeout with no new ductwork commonly gets a single final inspection instead of a separate rough in trip.
Compiled from the official sources on this page. Last checked .
Frequently asked questions
- Do you need an HVAC permit in Portland?
- Portland requires a residential mechanical permit for heating and cooling work with no size or capacity carve-out published. The city lists HVAC systems, gas piping, ductwork, furnaces, heat pumps, air conditioning condensing units, and mini-split systems as common projects that require one, and states plainly that a mechanical permit is still required even if a building permit is not. Gas piping work between the meter and appliances is covered, indoors and outdoors. For new townhouse projects each unit requires a separate mechanical permit. Always confirm with the Portland Permitting & Development before starting.
- How much does an HVAC permit cost in Portland?
- Mechanical Permit Fee Schedule for the City of Portland, effective July 10, 2026, One & Two Family Dwelling Fees: minimum fee $167.00. Line items include air handling unit $44.00, air conditioning (site plan required) $44.00, alteration of existing HVAC system $51.00, boiler or compressors $51.00, heat pump (site plan required) $84.00, install or replace furnace or burner including ductwork, vent, and liner $91.00, install, replace, or relocate suspended, wall, or floor mounted heaters $44.00, vent for appliance other than furnace $38.00, exhaust fan with single duct (bath fans). A 12% State of Oregon surcharge applies. See the official fee schedule for current amounts.
- How long does an HVAC permit take in Portland?
- The city states the application takes 15 minutes to complete and permits are issued within 24 hours after payment. Times can vary by workload and project scope, so confirm with the office.
- Where do you apply for an HVAC permit in Portland?
- You can apply through the Portland permit portal or contact the Portland Permitting & Development directly. The links are listed on this page.
- Can a homeowner pull an HVAC permit themselves in Portland?
- Under Oregon law (ORS 701.010(7); ORS 701.325(1), (2), (3)): A homeowner may pull the permit and do the work. ORS 701.010(7) exempts from Construction Contractors Board licensing a person performing work on property that person owns, or on that person's own residence whether or not they own it, so no CCB license is needed to act as your own builder. That exemption does not cover someone working in the pursuit of an independent business with intent to offer the structure for sale. Oregon does require a signed disclosure at the counter: ORS 701.325(1) makes every city, county, or state permit office collect a written statement signed by the applicant, and an applicant claiming a licensing exemption must state the basis for it. ORS 701.325(2) requires the office to give the applicant the Information Notice to Property Owners About Construction Responsibilities and withhold the residential building permit until the applicant signs a statement, one option of which is that they are performing work on property they own or a residence they live in or will live in, and that any contractors they hire will be CCB licensed and properly endorsed. The Information Notice itself is a CCB rule form under ORS 701.325(3) covering payroll tax, workers' compensation, and liability and property damage insurance responsibilities. Confirm how Portland applies this before you apply.
From the Library
What else needs a permit in Portland
Every other permit type we have verified for this jurisdiction, with the rule that applies here.
| Project | Permit needed? | Threshold | Typical fee |
|---|---|---|---|
| Deck Permit | It depends | height of the deck walking surface above adjacent grade, taken 36 inches out from the edge of the deck | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Electrical Permit | It depends | Not specified | Electrical Permit Fee Schedule for the City of Portland, effective July 10, 2026. |
| Fence Permit | It depends | wood and similar materials; 4 feet for masonry or concrete, 8 feet for woven wire or chain link, and any barrier around a swimming pool | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Patio Permit | It depends | area of an attached patio cover, porch cover, carport, or other open-sided roofed structure | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Plumbing Permit | It depends | Not specified | Plumbing Permit Fee Schedule for the City of Portland, effective July 10, 2026. |
| Pool Permit | It depends | depth of water in a structure used for swimming or recreational bathing | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Roof Replacement Permit | It depends | Not specified | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Shed Permit | It depends | in area, or a height over 15 feet from the grade plane to the average height of the highest roof surface; on lots over 2 acres the area trigger rises to 400 square feet when the structure is at least 20 feet from property lines and other structures | Building and Other Permits Fee Schedule for the City of Portland, effective July 10... |
| Solar Permit | Permit required | Not specified | Portland Permitting & Development publishes solar permit fee estimates, noting 'The fees... |
HVAC Permit in other Oregon localities
Everything above, sourced
Code references
National and state model-code sections the general guidance on this page is drawn from. They are not Portland documents; the office above sets the local rules.
Verified by a person against the sources above on , not confirmed with Portland Permitting & Development. Rules change; confirm before you build. How we verify.
Last checked: Report an error on this page
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HVAC Permit across Oregon