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Residential Addition / Remodel Permit in Mount Crested Butte, Colorado

Required for additions, interior remodels, and exterior remodels to existing residential structures in Mt. Crested Butte, per the Town's own Permit Policy document covering remodels, additions, repairs, excavation, and driveway improvements. Reviewed under the 2021 IRC and IEBC as locally amended (Town Code Chapter 6); additions of 1,000 sq ft or more that bring total gross floor area to 4,800 sq ft or more trigger whole-structure fire sprinkler requirements.

Verified 2026-07-06 · Source

When you need this permit

  • Interior remodels requiring a permit include basement finishes, attic conversions, kitchen/bathroom remodels, structural changes (adding/removing doors, windows, walls, or changing rough opening sizes), new/rerouted ductwork or mechanical ventilation, insulation changes to the exterior thermal envelope, gas/solid-fuel appliance changes, and drywall teardown/replacement over a 4x8 ft sheet
  • Exterior remodels requiring a permit include roofing replacement or new roof, siding replacement, and deck structural element replacement or new deck
  • No permit required for like-for-like replacement of cabinets, countertops, tiling, flooring, windows, or doors (provided rough openings don't change), or drywall patching under a 4x8 ft sheet — all replacements must still meet International Energy Code requirements
  • Additions of 1,000 sq ft or more that bring total gross floor area to 4,800 sq ft or more require the ENTIRE structure to be protected with an automatic fire sprinkler system (Town Code Sec. 6-59)
  • Level 3 alterations to existing structures with gross floor area 4,800 sq ft or more require automatic fire sprinkler protection
  • Retaining walls over 4 feet require engineering and must be textured, colored, or faced per the Town's Design and Permit Review Punch List
  • Design Review Compliance and Cleanup Deposit required for permits with valuation $1,000 or more
  • 3% Use Tax on construction/building materials, calculated on 50% of estimated total valuation

Required documents

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Fee schedule

Building Permit Fee (same valuation-tiered schedule as new construction, Table R1-A)Ordinance No. 6, Series 2024
$23.50 minimum, scaling per Town Code Sec. 6-52
Plan Check Fee
65% of the Building Permit Fee
Use Tax
3% of 50% of total estimated project valuation

Review timeline

Plan review
Not published — contact the department

How long did your Residential Addition / Remodel Permit permit actually take in Mount Crested Butte?

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

Inspection process

  1. 1

    Framing Inspection

    Required for structural changes; request at least 2 working days in advance

  2. 2

    Energy & Insulation Inspection

  3. 3

    Drywall Inspection

  4. 4

    Final Inspection

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

Tips

  • Check the Town's Permit Policy document carefully before assuming a small interior project is exempt — the Town defines 'interior remodel' broadly (any alteration better suiting modern needs), and even drywall work over a single 4x8 ft sheet requires a permit.
  • If your addition brings total gross floor area to 4,800 sq ft or more, budget for whole-structure fire sprinklers even if the original structure wasn't required to have them.

Frequently asked questions

No, per the Town's Permit Policy, like-for-like replacement of existing cabinets, countertops, tiling, flooring, windows, and doors does not require a permit, provided window/door rough openings don't change and all replacements meet International Energy Code requirements.

In Mount Crested Butte, the published Building Permit Fee (same valuation-tiered schedule as new construction, Table R1-A) is: $23.50 minimum, scaling per Town Code Sec. 6-52. Additional published fees: Plan Check Fee — 65% of the Building Permit Fee; Use Tax — 3% of 50% of total estimated project valuation. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Mount Crested Butte does not publish a plan-review timeline for this permit. Contact Town of Mt. Crested Butte Community Development Department (Building Division) at (970) 349-6632, ext. 5 (Community Development Department) for current turnaround.

You'll need: Building Permit Application (fillable form); Mt. CB Business License (BOLF) for General Contractor. Depending on your project, Mount Crested Butte may also ask for: Design and Permit Review Application (GovWell portal, for exterior-affecting projects). See the required-documents checklist on this page for details on each.

Mount Crested Butte requires 4 inspection(s) for a residential addition / remodel permit, in order: Framing Inspection, Energy & Insulation Inspection, Drywall Inspection, Final Inspection. Schedule each through Town of Mt. Crested Butte Community Development Department (Building Division) ((970) 349-6632, ext. 5 (Community Development Department)).

Apply through Town of Mt. Crested Butte Community Development Department (Building Division) at 911 Gothic Rd., PO Box 5800, Mt. Crested Butte, CO 81225. Phone: (970) 349-6632, ext. 5 (Community Development Department), email: mnevinslavtar@mtcb.colorado.gov (Community Development Director). Office hours: Community Development Department Staff (per mtcb.colorado.gov/departments-services/community-development): Maeve Nevins-Lavtar, Community Development Director, ext. 117, mnevinslavtar@mtcb.colorado.gov. Shannon Hessler, Planner II, ext. 119, shessler@mtcb.colorado.gov. Todd Carroll, Community Development Coordinator, ext. 120, tcarroll@mtcb.colorado.gov. Leah Desposato, Community Development Coordinator, ext. 105, ldesposato@mtcb.colorado.gov. Building permit and design-review applications are submitted online via the Town's GovWell portal (app.govwell.com/mtcb).. Official information: https://mtcb.colorado.gov/building.

Mount Crested Butte, Colorado has adopted: 2021 International Building Code (IBC) — Town Code Chapter 6, Article II, adopted by Ordinance No. 6, Series 2024, in effect as of January 3, 2025, pursuant to Title 31, Article 16, Part 2, C.R.S.; 2021 International Residential Code (IRC) — Town Code Chapter 6, Article III, with local amendments including Table R301.2 climatic design criteria (Sec. 6-32, a 155 psf ground snow load) and a modified automatic fire sprinkler requirement (Sec. 6-59); 2021 International Existing Building Code (IEBC) — referenced in the Town's Adopted Codes list on mtcb.colorado.gov/building; 2021 International Mechanical Code (IMC) — Town Code Chapter 6, Article IV (Sec. 6-73 through 6-75), with a local flat-fee Table 1-AM mechanical permit fee schedule; 2021 International Fuel Gas Code (IFGC) — adopted per the Town's Adopted Codes list; the State of Colorado is responsible for reviewing and inspecting plumbing rather than the Town; 2021 International Fire Code (IFC) — Town Code Chapter 8, Article I, enforced through the Crested Butte Fire Protection District (CBFPD), which performs all fire alarm/suppression/sprinkler inspections rather than the Town Building Division; 2021 International Property Maintenance Code — per the Town's Adopted Codes list; 2021 International Energy Conservation Code (IECC) — per the Town's Adopted Codes list; Colorado Model Electric Ready and Solar Ready Code — Town Code Chapter 6, Article X (Sec. 6-141 et seq.), adopted by Ordinance No. 6, Series 2024, in effect as of January 3, 2025; applies to new one- and two-family dwellings and townhouses (residential buildings are exempted from certain waiver provisions per Section 101.4.1/102.1); 2025 Colorado Wildfire Resiliency Code (WRC) — per the Town's own 'Colorado Wildfire Resiliency Code' link and 'WRC Standards Summarized' summary sheet published on mtcb.colorado.gov/building; National Electrical Code and International Plumbing Code — the Town's own Adopted Codes page states: 'The State of Colorado is responsible for reviewing and inspecting electrical and plumbing. Please contact the State of Colorado to determine the following code editions: National Electrical Code, International Plumbing Code' — Mt. Crested Butte does not itself adopt/administer these trade codes; Full Town Code Chapter 6 (Buildings and Building Regulations) and Chapter 8 (Fire Prevention and Protection) text and Ordinance No. 6, Series 2024 hosted at mtcb.colorado.gov and mirrored on ecode360.com/MT4975 and qcode.us/codes/mtcrestedbutte. Local amendments apply — see the Mount Crested Butte overview page for the full list.

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

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