The rule in Medford
The Building Codes Division's About Oregon residential building permits page (read 23 October 2026) lists the mechanical work that needs a permit and the work that does not:
| Needs a permit | No permit |
|---|---|
| "Install or change any part of a heating or cooling system that must be vented into any kind of chimney" | Portable heaters, portable cooling units, evaporative coolers |
| "Install, alter, or repair gas piping between the meter or LPG tank and an appliance, both indoors and outdoors" | Portable ventilation such as room air cleaners and window fans |
| Wood stove, fireplace insert, pellet stove or related venting | "Replace any minor part that does not alter approval of equipment or make it unsafe" |
| Bath fans, dryer exhausts, kitchen range exhausts | "Change furnace filters" |
The same page warns: "Work exempt from a building permit is not necessarily exempt from a mechanical, electrical or plumbing permit."
Minor label or full permit
Oregon's mechanical minor label program "allows contractors to perform certain common mechanical installations under a minor label permit", with remote inspection through a mobile app, and "Mechanical minor labels are available for use statewide." Only a contractor with a valid CCB license can buy them.
| Job | Minor label allowed? |
|---|---|
| "Replacing existing heating, cooling, and ventilation equipment" | Yes |
| "Adding a central air-conditioning unit to existing ductwork" (one and two-family) | Yes |
| "Installing new mini-split heat pumps" (one and two-family) | Yes |
| Moving or replacing ductwork without fire dampers or firewall penetrations | Yes |
| "Mechanical replacements where the fuel type changes" (oil to heat pump, gas to electric) | No: full permit |
| Fuel-burning replacement that needs a new venting system | No: full permit |
So a gas furnace swapped for a gas furnace on the old vent can go on a minor label; a switch from an oil furnace to a heat pump is a full City mechanical permit.
Who pulls it
A CCB-licensed contractor, in almost every case. Oregon's contractor law (ORS 701.010) exempts only work under $1,000 "of a casual, minor or inconsequential nature", and heating and air conditioning are on the CCB's list of licensed work. Check the license on the CCB License Search; 79.5% of the 83 Medford HVAC firms in our file matched an active CCB license.
You, for your own work: "The person performing the work, whether it is a homeowner or contractor, is responsible for obtaining all necessary permits." But on propane, "The State Fire Marshal's licensing law requires anyone, including homeowners, who install, extend, alter, or repair any LP gas appliance or piping, vent or flue connection must be licensed through them."
How to apply and get inspected
- Apply through the City of Medford Development Services Portal, which also shows inspection results and plan status. (A minor label is bought from the state by the contractor.)
- Inspection: Medford's Building Safety page takes requests by phone at 541-774-2350, online or by smartphone; "Inspections can be done the same day if called in before 7:00 a.m." It also offers "Remote Virtual Inspections (RVI) for some residential inspection types only."
- Final: the permit shows FINALED in the portal.
Building Safety says "All City fees can be found at the Finance Department webpage"; we could not read the mechanical fee lines, so confirm the amount there or with Building Safety.
What 1,507 Medford HVAC permits show
| Measure | Medford HVAC and mechanical |
|---|---|
| Permits on homes, October 2023 to September 2026 | 1,507 |
| Firms | 83 |
| Firms with a permit in the last 12 months of the file | 50 |
| Usual declared job value | $10,000 |
| Middle half of firms' usual job (36 firms with 3+ permits) | $2,300 to $9,829 |
| Reached final (permits a year or more old) | 79.4% |
| Usual days from issue to final | 31 |
| 10th / 90th-percentile firm (10+ permits) | 46.6% / 93.2% |
| Share held by the five busiest firms | 55.6% |
| Busiest / quietest month | July (133) / February (63) |
Medford HVAC permits close fast: a usual 31 days, with 79.4% reaching final. The spread between firms is the thing to check, from 46.6% at the 10th-percentile busy firm to 93.2% at the 90th. Declared values give a price check: half of firms' usual jobs fall between $2,300 and $9,829. Demand peaks in July at 133, so a heat pump booked in February faces the shortest queue.
See every Medford HVAC contractor by permits reaching final →
Related
Declared values by job: Medford HVAC cost. Choosing the installer: hiring an HVAC contractor and the Medford HVAC list. National: HVAC replacement cost and do I need a permit for HVAC replacement. License checks: Medford contractor license lookup; permits on your address: Medford building permit search; counts: Medford permit statistics.
What this does not tell you
Our file is City of Medford permits; jobs done on a state minor label may not appear in it, so a firm that works mostly on labels will look smaller here than it is. The file covers the City only; neighbouring cities and unincorporated Jackson County issue their own permits. We could not verify the City's mechanical fee.
How we know this
The permit and exemption lists are quoted from the Oregon Building Codes Division's residential permits page and the minor label rules from its mechanical minor label page, read 23 October 2026; inspection details from the City of Medford Building Safety page the same day. Counts are City of Medford HVAC and mechanical permits on homes, October 2023 to September 2026; value is the declared job value, "reached final" uses permits a year or more old, and days run from issue to final.
Numbers come from City of Medford building, electrical, mechanical and plumbing permits on single-family, duplex and cottage homes (the city's TRAKiT permit exports), data through October 16, 2026. Nobody paid to be on this page and nobody can.
Questions
- Do I need a permit to replace a furnace or heat pump in Medford?
Yes. Oregon's Building Codes Division says a permit is needed to 'Install or change any part of a heating or cooling system that must be vented into any kind of chimney' and for gas piping to an appliance, and a CCB-licensed contractor can cover a straight replacement or a new mini-split with a state mechanical minor label instead of a full City permit.
- Can a homeowner pull an HVAC permit in Medford?
The state says 'The person performing the work, whether it is a homeowner or contractor, is responsible for obtaining all necessary permits.' One exception: anyone, including homeowners, working on an LP gas appliance, piping, vent or flue connection must be licensed through the State Fire Marshal.
- How long does an HVAC permit take in Medford?
The usual Medford HVAC permit in our file reached final 31 days after issue, and 79.4% of those a year or more old did. Medford Building Safety says inspections can be done the same day if called in before 7:00 a.m.
- How much does HVAC work cost in Medford?
The usual Medford HVAC permit carries $10,000 of declared job value, and the middle half of installers' usual jobs runs $2,300 to $9,829. The permit fee itself is on the City's fee schedule; we could not read the mechanical lines.
- How do I schedule an HVAC inspection in Medford?
By phone at 541-774-2350, online, or by smartphone. Building Safety also offers Remote Virtual Inspections for some residential inspection types.
Build your own list
Every firm with that kind of permit on record. Pick what you value. The list moves.
Related guides
- Medford building permit search: how to look up permits on an address
- Ames building permit search: how to look up permits on an address
- Do I need an HVAC permit in Ames? Yes: what is exempt, homeowner permits, the $56.23 base fee and inspections
- Do I need an HVAC permit in Anaheim? The mechanical permit for a furnace or AC change-out, fees and inspections
- Do I need an HVAC permit in Sacramento County? Yes, and it issues online: who pulls it, inspections, and timing
- Do I need an HVAC permit in unincorporated San Diego County? What is exempt, the $392 fee and why finals stall
For one city
- About Oregon residential building permits — Oregon Building Codes Division (accessed 2026-10-23)
- Mechanical minor label program — Oregon Building Codes Division (accessed 2026-10-23)
- Building Safety — City of Medford (accessed 2026-10-23)
- City of Medford Development Services Portal (2026-10-23)
- License Search — Oregon Construction Contractors Board (2026-10-23)
- ORS Chapter 701 Construction Contractors (2026-10-23)