Residential Addition / Remodel Permit in Crested Butte, Colorado

Crested Butte requires a residential addition / remodel permit for: BOZAR Development Permit Application approval required before submitting the building permit application for any project with exterior changes, additions, or historic rehabilitation; All residential remodels must adhere to the 2024 International Existing Building Code (IEBC); Level 3 alterations (more than 50% of work area renovated, per the floor-plan-based work-area definition) additionally require: EV-Ready parking space per dwelling unit; Electric Ready gas-appliance circuit/panel provisions if gas equipment is retained; Solar Ready zone per the Colorado Model Electric Ready and Solar Ready Code; Historic buildings undergoing a Level 3 alteration must meet the 2024 IECC without damaging the existing historic structure, and require both BOZAR and Building Official oversight; Optional Home Energy Assessment subsidy available from the Town for Level 3 remodels; If the addition increases footprint by 500 sq ft or more, or replaces more than 25% of exterior siding/roof covering, and the parcel falls within a mapped Class 1/Class 2 CWRC fire hazard area, full Colorado Wildfire Resiliency Code structure-hardening compliance is triggered for the affected assemblies; Current Gunnison County building contractor license required for all contractors on the permit; Materials List Form (Primary or Accessory Structure) required, referenced during inspections. 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 Building Permit Fee (same valuation-based schedule as new construction) is: $28.42 minimum, scaling per the valuation tiers in the 2026 Fee Schedule. Additional published fees: Plan Review Fee — 30% of Permit Fee (Residential). 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: BOZAR Development Permit Application; Building Permit Application; Materials List Form (Primary or Accessory Structure); Gunnison County Building Contractor License. See the required-documents checklist on this page for details on each.

Crested Butte requires 3 inspection(s) for a residential addition / remodel permit, in order: Rough Frame, Rough Electrical / Plumbing / Mechanical, Final Building Inspection. 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.

Renovating more than 50% of the work area, defined as all reconfigured spaces shown on the floorplans measured from the inside face of the building envelope. Altered spaces limited to finish replacement (flooring, cabinets) or fixture swaps not requiring a state plumbing/electric permit do not count toward the work-area calculation.