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Mechanical/Gas (HVAC) Permit (RMECH / CMECH) in Commerce City, Colorado

Required for new/replacement HVAC equipment, gas appliances, furnaces, air conditioners, and ductwork in Commerce City. Governed by the 2021 IMC and 2021 IFGC as adopted by the C3BC.

Verified 2026-07-13 · Source

When you need this permit

  • Residential Mechanical/Gas (RMECH) covers air conditioners, furnaces, gas appliances, ductwork, gas meter restorations, and other HVAC-only projects
  • Commercial Mechanical/Gas (CMECH) covers air conditioners, furnaces, kitchen hoods, gas appliances, meter restorations, ductwork, and other HVAC-only commercial projects
  • New and replacement HVAC equipment requires a permit per the 'When a Permit Is Required' list
  • New and replacement telecommunications equipment requires a permit

Required documents

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Fee schedule

Building/Mechanical Permit Fee (Table 1-A) — valuation $1.00 to $500.00Standalone mechanical/gas permits are billed on the same valuation-based Table 1-A schedule as building permits; no separate flat-fee mechanical schedule was found published. Directory of City Fees, Section 2 (PDF)
$30.41
Plan Review FeeApplies where plan review is required
65% of the Building Permit Fee

Review timeline

Plan reviewCommerce City’s published plan-review target
14–14 business days

How long did your Mechanical/Gas (HVAC) Permit (RMECH / CMECH) permit actually take in Commerce City?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Rough-In / Equipment

    Equipment installation and ductwork before concealment

  2. 2

    Final

    Equipment operational, combustion air and venting verified

See the full Commerce City inspection guide — scheduling & re-inspection fees →

Tips

  • As with plumbing, Commerce City does not publish a separate flat-fee HVAC/mechanical schedule -- these permits appear to run through the same valuation-based Table 1-A schedule as building permits generally.

Frequently asked questions

Yes. New and replacement HVAC equipment requires a permit per the city's 'When a Permit Is Required' guidance, submitted through eTRAKiT under the Residential Mechanical/Gas (RMECH) permit type.

In Commerce City, the published Building/Mechanical Permit Fee (Table 1-A) — valuation $1.00 to $500.00 is: $30.41. Additional published fees: Plan Review Fee — 65% of the Building Permit Fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Commerce City's published plan-review target for a mechanical/gas (hvac) permit (rmech / cmech) is 14–14 business days.

You'll need: Mechanical/Gas Permit Application (eTRAKiT). See the required-documents checklist on this page for details on each.

Commerce City requires 2 inspection(s) for a mechanical/gas (hvac) permit (rmech / cmech), in order: Rough-In / Equipment, Final. Schedule each through Commerce City Building Safety Division (Community Development Department) (303-289-3790).

Apply through Commerce City Building Safety Division (Community Development Department) at South Platte Crossing Building, 7190 Colorado Blvd. Ste 600 (6th Floor), Commerce City, CO 80022. Phone: 303-289-3790, email: cdpermits@c3gov.com. Office hours: Monday - Friday, 8:00 a.m. - 5:00 p.m.. Official information: https://www.c3gov.com/Business-Development/Building-Permits-Inspections.

Commerce City, Colorado has adopted: City of Commerce City Building Code (C3BC), also known as the 2021 edition of the C3BC — incorporates by reference: 2021 International Building Code (IBC), 2021 International Existing Building Code (IEBC), 2021 International Residential Code (IRC), 2021 International Energy Conservation Code (IECC), 2021 International Fuel Gas Code (IFGC), 2021 International Mechanical Code (IMC), 2021 International Plumbing Code (IPC), 2021 International Swimming Pool and Spa Code (ISPSC), 2021 International Private Sewage Disposal Code (IPSDC), 2021 International Green Construction Code (IgCC), 2023 NFPA 70 National Electrical Code (NEC), 2021 International Fire Code, and 2021 International Property Maintenance Code. Source: Commerce City Municipal Code Chapter 5, Sec. 5-1 and 5-2, https://www.c3gov.com/Business-Development/Building-Permits-Inspections/Step-1-Project-Design/Building-Code-Provisions-in-the-Municipal-Code; City of Commerce City Construction Code — the 2021 IBC as adopted, including Appendix Chapters C, E, F, G, H, I, J, K and N. Source: c3gov.com 2021 International Building Code page, https://www.c3gov.com/Business-Development/Building-Permits-Inspections/Step-1-Project-Design/2021-International-Building-Code; City of Commerce City Residential Code — the 2021 IRC as adopted, including Appendix Chapters AH, AI, AJ, AK, AM, AQ, AR, AS, AT, AU and AW. Source: c3gov.com 2021 International Residential Code page, https://www.c3gov.com/Business-Development/Building-Permits-Inspections/Step-1-Project-Design/2021-International-Residential-Code; City of Commerce City Commercial Energy Conservation Code and City of Commerce City Residential Energy Conservation Code — the 2021 IECC as locally amended (Sections C101.1/R101.1 renamed; C103/R103 construction-document amendments; C104/R104 fees deleted and replaced to reference Article VI, Chapter 5 fee schedule; C109/R109 stop-work order and C110/R110 board-of-appeals sections replaced to reference Commerce City Municipal Code Sec. 5-5007 and Sec. 5-21). For permit applications submitted prior to July 1, 2026, applicants may choose to comply with the 2018 IECC as amended by the city instead. Source: c3gov.com 2021 IECC page, https://www.c3gov.com/Business-Development/Building-Permits-Inspections/Step-1-Project-Design/2021-International-Energy-Conservation-Code; 2023 NFPA 70 National Electrical Code (NEC), adopted by reference per Municipal Code Sec. 5-2. Source: Commerce City Municipal Code Chapter 5, Sec. 5-2; Construction for which a permit application is submitted six months after the effective date of the 2021 C3BC must comply with the 2021 C3BC; applicants during that six-month transition window could choose either the 2021 C3BC or the prior edition; IBC-designed permit applicants were permitted one year after the effective date to comply. Source: Commerce City Municipal Code Chapter 5, Sec. 5-4. Local amendments apply — see the Commerce City overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-13.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Commerce City building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Commerce City

Residential Building Permit (New Construction / RNEW)Residential Addition / Alteration Permit (RADD / RALT)Electrical Permit (RELEC / CELEC)Plumbing/Gas Permit (RPLMB / CPLMB)Roofing Permit (Commercial / Multi-Family Reroofs Only)Accessory Dwelling Unit (ADU) PermitDemolition Permit (RDEMO / CDEMO)Fence and Retaining Wall PermitSolar PV PermitElectric Vehicle Charging Station Permit

Mechanical/Gas (HVAC) Permit (RMECH / CMECH) in other cities

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