How to Get a HVAC Permit in Hillsboro, OR (2026 Guide)
Everything you need to know about hvac permits in Hillsboro, OR, local requirements, fees, timelines, and how to apply.
By Joey, Founder · Last updated June 6, 2026 · How we research →
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Free Permit Lookup →Do You Need a HVAC Permit in Hillsboro?
Based on Hillsboro's local building codes, you'll need a permit when:
Replacing an HVAC system requires a mechanical permit.
Installing a different HVAC system requires a mechanical permit.
Ductwork modifications require a mechanical permit.
Adding central HVAC requires a mechanical permit.
Permit Fees in Hillsboro
Based on local Hillsboro permit data, fees for hvac projects typically range:
Here's how fees break down by project scope nationally:
| Project Scope | Typical Permit Fee |
|---|---|
| Furnace or AC replacement | $75 – $300 |
| Heat pump installation | $100 – $350 |
| Mini-split installation | $75 – $250 |
| New ductwork | $100 – $400 |
| Gas line permit (separate) | $50 – $200 |
| Electrical permit (if needed for new circuits) | $50 – $200 |
Fees are typically calculated based on estimated project value. Contact Development Services & Permitting Center for exact amounts.
How Long Does It Take?
In Hillsboro, typical approval time for hvac permits is about 1 week.
More complex projects requiring structural review or variances may take longer. Simple projects may qualify for expedited or over-the-counter review in some cases.
How to Apply for a HVAC Permit in Hillsboro
- 1 Check requirements: Use our free lookup tool or contact Development Services & Permitting Center to confirm your project needs a permit.
- 2 Gather documents: Prepare your application, site plan, construction drawings, and any other required documents.
- 3 Submit online: Hillsboro accepts applications online at Development Services & Permitting Center.
- 4 Pay fees: Pay the applicable permit fees ($60 – $450).
- 5 Wait for approval: Your application will be reviewed by Hillsboro plan reviewers. Typical turnaround is about 1 week.
- 6 Begin work: Once approved, post your permit visibly at the job site before starting work.
- 7 Schedule inspections: Call Development Services & Permitting Center at (503) 681-6153 to schedule required inspections at each phase of the project.
Hillsboro Building Department Contact
Required Inspections in Hillsboro
Most hvac projects in Hillsboro require inspections at each construction stage:
Rough-In Mechanical Inspection (new ductwork), Duct sizing and support/hanging, duct sealing at all joints (mastic or UL 181-rated tape), return air pathways, equipment location clearances, combustion air provisions per IRC G2407, and condensate drain routing.
Gas Piping Pressure Test, Gas piping system pressurized (typically 3 PSI for 10 minutes or per local code) with no pressure drop, indicating no leaks. Inspector witnesses the test or verifies documented results. Proper sediment trap (dirt leg) installed ahead of each appliance.
Final Mechanical Inspection, Equipment installed per manufacturer instructions, gas connections tight and leak-tested, venting is correct material with proper slope and termination clearances, condensate drainage functional, thermostat operation verified, CO detectors installed (required in many jurisdictions near gas appliances), system fires up and operates correctly, clearance to combustibles maintained, filter accessible, and equipment nameplate matches the permit.
Schedule inspections with Development Services & Permitting Center at (503) 681-6153 at least 24–48 hours in advance.
Frequently Asked Questions
Whether you need a permit depends on the size and scope of your hvac project. In Hillsboro, some smaller projects are exempt while larger ones require a permit. Use our free lookup tool to check your specific situation.
Permit fees for hvac projects in Hillsboro typically range from $60 – $450. Fees are usually based on the estimated project value.
Typical approval time in Hillsboro is about 1 week. Complex projects requiring structural review may take longer.
In most cases, homeowners in Hillsboro can pull permits and perform work on their own primary residence as an owner-builder. You're still responsible for meeting all code requirements and passing inspections.
Working without a required permit in Hillsboro can result in fines, stop-work orders, required removal of completed work, and complications when selling your home.
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Free Permit Lookup →Other Permit Guides for Hillsboro, OR
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HVAC Permits in Nearby Cities
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See Detailed HVAC Rules for Hillsboro
View all local rules, exemptions, and fee details on the permit page.
HVAC Permit Rules →