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Mechanical / HVAC Permit in Crested Butte, Colorado

Required for heating, cooling, ventilation, and gas appliance installation or replacement in Crested Butte. Governed by the 2021 International Mechanical Code (IMC), including Appendix A, adopted by Town Code Chapter 18, Article 3, and the 2021 International Fuel Gas Code (IFGC) for gas-fired equipment, which mandates high-efficiency direct-vent sealed-combustion appliances only.

Verified 2026-07-06 · Source

When you need this permit

  • Governed by the 2021 IMC (Appendix A) as locally adopted
  • Gas-fired equipment governed by the 2021 IFGC as locally amended: all installed fuel gas burning appliances must be high-efficiency direct-vent appliances with sealed combustion (Town Code Sec. 18-7-30(3)); several standard IFGC combustion-air provisions (Sections 304.2, 304.3, 304.5-304.8) are deleted in favor of manufacturer installation instructions
  • Combined Plumbing and Mechanical Permit Application used for common scopes including gas fireplaces, heat recovery ventilation systems, and kitchen exhaust hoods
  • Boiler/Compressor/Absorption System and Mechanical Exhaust Hood have their own flat fee line items in the 2026 Fee Schedule
  • Current Gunnison County building contractor license required Contractor

Required documents

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Fee schedule

Mechanical Permit2026 Town of Crested Butte Fee Schedule (Exhibit A), effective January 1, 2026
$100.00
Mechanical Exhaust Hood
$200.00
Solid Fuel Burning Device Application
$100.00

Review timeline

Plan review
Not published — contact the department

How long did your Mechanical / HVAC Permit permit actually take in Crested Butte?

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

Inspection process

  1. 1

    Rough Mechanical

    Ductwork, flues, and equipment placement before concealment; 5 working days advance notice required

  2. 2

    Final Mechanical

See the full Crested Butte inspection guide — scheduling & re-inspection fees →

Tips

  • All gas-fired appliances in Crested Butte must be high-efficiency, direct-vent, sealed-combustion units per a local IFGC amendment — the Town has deleted several of the IFGC's standard alternative combustion-air provisions, so a generic indoor/outdoor combustion-air installation may not qualify.
  • The Mechanical Permit ($100) and Mechanical Exhaust Hood ($200) carry their own flat fees in the 2026 Fee Schedule, unlike most other permit types here which are valuation-based.

Frequently asked questions

Crested Butte requires a mechanical / hvac permit for: Governed by the 2021 IMC (Appendix A) as locally adopted; Gas-fired equipment governed by the 2021 IFGC as locally amended: all installed fuel gas burning appliances must be high-efficiency direct-vent appliances with sealed combustion (Town Code Sec. 18-7-30(3)); several standard IFGC combustion-air provisions (Sections 304.2, 304.3, 304.5-304.8) are deleted in favor of manufacturer installation instructions; Combined Plumbing and Mechanical Permit Application used for common scopes including gas fireplaces, heat recovery ventilation systems, and kitchen exhaust hoods; Boiler/Compressor/Absorption System and Mechanical Exhaust Hood have their own flat fee line items in the 2026 Fee Schedule; Current Gunnison County building contractor license required. If your project isn't listed, confirm with Town of Crested Butte Building Department (Community Development Department) at (970) 349-5338 before starting work.

In Crested Butte, the published Mechanical Permit is: $100.00. Additional published fees: Mechanical Exhaust Hood — $200.00; Solid Fuel Burning Device Application — $100.00. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Crested Butte does not publish a plan-review timeline for this permit. Contact Town of Crested Butte Building Department (Community Development Department) at (970) 349-5338 for current turnaround.

You'll need: Plumbing and Mechanical Permit Application; Gunnison County Building Contractor License. See the required-documents checklist on this page for details on each.

Crested Butte requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough Mechanical, Final Mechanical. Schedule each through Town of Crested Butte Building Department (Community Development Department) ((970) 349-5338).

Apply through Town of Crested Butte Building Department (Community Development Department) at 507 Maroon Ave, Crested Butte, CO 81224 (Building Department mailing address: PO Box 39, Crested Butte, CO 81224). Phone: (970) 349-5338, email: building@crestedbutte-co.gov. Office hours: Monday-Friday 8:30 a.m. to 5:00 p.m. Building Official Astrid Matison (ext. 116, amatison@crestedbutte-co.gov). Building Inspector Josh Staab (ext. 127, jstaab@crestedbutte-co.gov). Community Development Director Mel Yemma (ext. 119, melyemma@crestedbutte-co.gov). BOZAR/Planning questions: planning@crestedbutte-co.gov, (970) 349-5338 ext. 121.. Official information: https://townofcrestedbutte.colorado.gov/planning-permitting/community-development.

Crested Butte, Colorado has adopted: 2024 International Building Code (IBC), Chapters 1-35 without appendices — adopted by reference, Town Code Chapter 18, Article 1 (Sec. 18-1-10), pursuant to Title 31, Article 16, Part 2, C.R.S.; 2024 International Residential Code (IRC) — Town Code Chapter 18, Article 2 (Sec. 18-2-10), with extensive local amendments including an all-electric mandate and Table R301.2 climatic design data (Sec. 18-2-30); International Existing Building Code (IEBC) — Town Code Chapter 18, Article 2.5; International Green Construction Code (IgCC), selected sections — Town Code Chapter 18, Article 1.5 (Sec. 18-1.5-30), applicable to new commercial construction; 2021 International Mechanical Code (IMC), including Appendix A — Town Code Chapter 18, Article 3 (Sec. 18-3-10); 2021 International Plumbing Code (IPC), including Appendices C and E — Town Code Chapter 18, Article 4 (Sec. 18-4-10); 2023 National Electrical Code (NEC) — Town Code Chapter 18, Article 5 (Sec. 18-5-10), adopted with no local amendments; 2021 International Fire Code (IFC), including Appendices B-M — Town Code Chapter 18, Article 6 (Sec. 18-6-10), enforced with Crested Butte Fire Protection District (CBFPD) coordination; 2025 Colorado Wildfire Resiliency Code (CWRC), 8 CCR 1507-39 — Town Code Chapter 18, Article 6.5 (Sec. 18-6.5-10), established statewide July 1, 2025; Town enforcement begins June 1, 2026 per the Town's own CWRC Summary Sheet; 2021 International Fuel Gas Code (IFGC), including Appendices — Town Code Chapter 18, Article 7 (Sec. 18-7-10), with local amendments requiring high-efficiency direct-vent sealed-combustion appliances only (deleting IFGC's alternative combustion-air provisions); 2021 International Energy Conservation Code (IECC), without appendices — Town Code Chapter 18, Article 9, Sec. 18-9-40; new construction is additionally required to achieve DOE Zero Energy Ready Home (ZERH) certification per the Town's 2024 Building Code Information page and fact sheet, effective for permits starting January 1, 2026; Colorado Model Electric Ready and Solar Ready Code — referenced throughout the Town's 2024 Building Code fact sheet for EV-ready parking, solar-ready zones, and electric-ready gas-appliance provisions; Full Town Code Chapter 18 (Building Regulations) text hosted at townofcrestedbutte.colorado.gov (Town Code Chapter 18 Revised PDF, Supp. No. 22) and mirrored on library.municode.com/co/crested_butte. Local amendments apply — see the Crested Butte overview page for the full list.

No. Town Code Sec. 18-7-30(3) requires all installed fuel gas burning appliances to be high-efficiency direct-vent appliances with sealed combustion, installed per the manufacturer's listing — atmospheric/naturally-vented equipment does not meet this local amendment.

Sources & verification

Verified against official sources. Last reviewed 2026-07-06.

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 Crested Butte building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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