Mechanical / HVAC Permit in Crested Butte, Colorado

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; 2024 International Fire Code (IFC), including Appendices B-M — Town Code Chapter 18, Article 6 (Sec. 18-6-10), adopted by Ordinance No. 9, Series 2025, § 2(Exh. A), effective September 15, 2025, superseding the 2021 IFC. Enforced with Crested Butte Fire Protection District (CBFPD) coordination; local amendments include IFC Sec. 507.1 as amended, requiring an approved monitored fire suppression system throughout any occupancy or structure wherever the water supply cannot provide the required fire flow (Occupancy R-3 single-family dwellings excepted), and IFC Appendix B105.1 as amended, setting a 1,500 gpm minimum fire-flow requirement for one- and two-family dwellings, R-3/R-4 buildings, and townhouses; 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.