The Roofing Book

Permitting Authorities / Colorado / Town of Mt. Crested Butte Building Division

Do you need a permit to replace a roof in Mt. Crested Butte, CO?

Adopted code

Town of Mt. Crested Butte Building Division

Yes, a permit is required to replace a roof in Mt. Crested Butte, CO, issued by Town of Mt. Crested Butte Building Division. Per the Building Division landing page, "Building functions within the department include the implementation and enforcement of all laws, ordinances, and codes that govern development within town limits." Projects go through Design & Permit Review before Building Permit Review/Issuance, then applicants "must schedule inspections for the property," including "town of Mt. CB inspections, electrical, plumbing, fire, and water/sewer" (per the Inspections page, the Town itself schedules only its own building-department inspections — footer, stem wall, slab, culvert/valley pan, rough-in, flow fill, framing, energy & insulation, drywall, and final; electrical is permitted/inspected by the State of Colorado, plumbing by a state plumbing inspector, fire-system inspections by the Crested Butte Fire Protection District, and water service line inspections by the Mt. Crested Butte Water & Sanitation District). Ordinance No. 6, Series 2024 also sets a local ice-barrier amendment for all roofs and a Gunnison County Building Contractor license requirement. No Town page states in so many words that "a permit is required to reroof" (general language covers "new construction, alterations, and remodels," and the Interior Remodel Permit Policy referenced on the FAQs page was not retrievable), so whether a standalone re-roof permit is required is unconfirmed; the Colorado Wildfire Resiliency Code, adopted by the Town, does explicitly apply to "re-siding or re-roofing projects impacting 25% or more of the structure.".

Roof code checklist: Mt. Crested Butte, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesOrdinance No. 6 Series 2024_ADA.pdf2026-08-03
Repair permit thresholdNot published
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeNot published
Ice & water shieldYesR905.1.2Ordinance No. 6 Series 2024_ADA.pdf2026-08-03
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNoOrdinance No. 6 Series 2024_ADA.pdf2026-08-13
Wind design criteriaNot published
Adopted codePublishedSec. 8-1ecode360.com2026-08-15
Contractor license / registrationYesOrdinance No. 6 Series 2024_ADA.pdf2026-07-17
Sales & use taxPublishedmtcb.colorado.gov2026-08-03

Each row comes from the sourced record on this page; full wording is in the table below. "Not published" means no official source for that item was found when the record was last verified.

Jurisdiction
Town of Mt. Crested Butte, Colorado
Jurisdiction type
city
Address
911 Gothic Road, Mt. Crested Butte, CO 81225
Contact
  • url: https://mtcb.colorado.gov/building
  • phone: 970-349-6632
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • license: Per Town of Mt. Crested Butte Ordinance No. 6, Series 2024 (local amendments to the IBC and IRC): "All building permit applications for new construction shall include proof of a current Gunnison County Building Contractor license. The license shall be the type (Class A, Class B, or Class C) associated with the scope of work for the building permit application," and the same requirement applies to "additions and level 2 and level 3 alterations governed by the International Existing Building Code (IEBC) and International Building Code (IBC)" (IBC track) and to "additions and Reconstructions per Appendix AJ of the International Residential Code (IRC)" (IRC/residential track), with the building official having "discretion to waive this requirement." An exemption exists for "Property owners of an individual R1, R2, or R3 unit acting as their own contractor who provide proof of passing the contractor test associated with the Gunnison County contractor license."
Permit process note
Per the Building Division landing page, "Building functions within the department include the implementation and enforcement of all laws, ordinances, and codes that govern development within town limits." Projects go through Design & Permit Review before Building Permit Review/Issuance, then applicants "must schedule inspections for the property," including "town of Mt. CB inspections, electrical, plumbing, fire, and water/sewer" (per the Inspections page, the Town itself schedules only its own building-department inspections — footer, stem wall, slab, culvert/valley pan, rough-in, flow fill, framing, energy & insulation, drywall, and final; electrical is permitted/inspected by the State of Colorado, plumbing by a state plumbing inspector, fire-system inspections by the Crested Butte Fire Protection District, and water service line inspections by the Mt. Crested Butte Water & Sanitation District). Ordinance No. 6, Series 2024 also sets a local ice-barrier amendment for all roofs and a Gunnison County Building Contractor license requirement. No Town page states in so many words that "a permit is required to reroof" (general language covers "new construction, alterations, and remodels," and the Interior Remodel Permit Policy referenced on the FAQs page was not retrievable), so whether a standalone re-roof permit is required is unconfirmed; the Colorado Wildfire Resiliency Code, adopted by the Town, does explicitly apply to "re-siding or re-roofing projects impacting 25% or more of the structure."
Adopted code
Per the Building Division landing page: "The Mt. Crested Butte Town Council approved an Ordinance adopting the 2021 International Building Codes and the Colorado Model Electric Ready and Solar Ready Code, which is in effect as of January 3, 2025," listing: 2021 International Building Code, 2021 International Residential Code, 2021 International Fire Code, 2021 International Mechanical Code, 2021 International Fuel Gas Code, 2021 International Property Maintenance Code, 2021 International Energy Conservation Code, 2021 International Existing Building Code, the Colorado Model Electric Ready and Solar Ready Code, and the Colorado Wildfire Resiliency Code (electrical and plumbing code editions are set by the State of Colorado, which reviews/inspects those trades directly rather than the Town). The instrument behind the Town's I-Code adoptions is Ordinance No. 6, Series 2024, recorded in the Town's own Ordinance List and Disposition Table as Ordinance 24-6, adopted September 3, 2024, "Repeals and Replaces Buildings and Building Regulations; Repeals and Replaces Fire Prevention and Protection," codified at Chapters 6 and 8. That ordinance does not adopt the Colorado Wildfire Resiliency Code, and no adopting instrument for that code has been located: codified Chapter 6 runs Articles I through X ending with the Colorado Model Electric Ready and Solar Ready Code, Chapter 8 adopts only the fire code at Section 8-1, and the disposition table records no wildfire ordinance through Ordinance 25-20 of October 21, 2025, which is where the codification currently ends. The Colorado Wildfire Resiliency Code, 8 CCR 1507-39, became a statewide minimum on July 1, 2026 in areas designated wildland-urban interface under that code, after that codification date. Ordinance No. 6, Series 2024 contains a local roofing amendment, Sec. 6-31/6-65 "Ice Barriers for Roofs," reading in relevant part: "An ice barrier shall be installed for all roofs. The ice barrier shall consist of a self-adhering polymer-modified bitumen sheet and shall be installed on the entire roof. Exception: Detached accessory structures not containing conditioned floor area" (stated once each for the IBC and IRC amendment sections). The Town's own "Wildfire Resiliency Code Summary" PDF states the Colorado Wildfire Resiliency Code applies to "New construction" and "Re-siding or re-roofing projects impacting 25% or more of the structure," and requires under "Roofing": "Class A roofing materials required," "Roof valleys: minimum 26-gauge metal," "Gutters and downspouts: noncombustible," and "Vented roof openings: noncombustible, corrosion-resistant mesh with 1/8-inch maximum openings."
Ice & water shield
Required — Town of Mt. Crested Butte Ordinance No. 6, Series 2024, Sec. 6-65 amends International Residential Code Section R905.1.2 in its entirety: "Section R905.1.2, Ice Barriers. An ice barrier shall be installed for all roofs. The ice barrier shall consist of a self-adhering polymer-modified bitumen sheet and shall be installed on the entire roof. Exception: Detached accessory structures not containing conditioned floor area." (A parallel IBC-track amendment appears at Sec. 6-31, amending Section 1507.2.8.2, with identical operative text.) This is a local ice-barrier-underlayment mandate under the IRC roof-covering chapter and is distinct from the separately-adopted Colorado Wildfire Resiliency Code's Class A roof-covering (ignition-resistance) requirement, which this record does not use to support impact-resistance or ice-barrier fields. About ice & water barrier
Impact-resistant roofing
Not required — Town of Mount Crested Butte Ordinance No. 6, Series 2024, was read in full. Article II adopts the 2021 International Building Code by reference and Article III the 2021 International Residential Code, each subject to the amendments the ordinance sets out. Its roofing amendments are confined to ice barriers: Section 6-31 replaces International Building Code Section 1507.2.8.2 in its entirety, and Section 6-65 replaces International Residential Code Section R905.1.2 in its entirety, each requiring an ice barrier on roofs. Neither the adopted codes nor any Town amendment imposes an impact-resistance requirement on roof coverings, and the ordinance names no UL 2218 or Class 4 standard. The Colorado Energy Office Statewide Building Code Adoption dataset, revised April 2, 2026, likewise reports a 2021 adoption for the Town.
Sales & use tax
9.9% combined. The Town of Mt. Crested Butte is a self-collecting home-rule municipality; its own Finance Department "Retail & Food Sales Tax" page states: "Businesses should be collecting 9.9% on all goods sold in Mt. Crested Butte," itemized as "State of Colorado Tax 2.9%, Gunnison County Tax 1.0%, Special District - Rural Transportation Authority (RTA) 1.0%, Town of Mt. Crested Butte Tax 5.0%, Total 9.9%." This matches CO DOR DR 1002's Home Rule Cities table (Town rate 5%) and its Gunnison County (1%) and "Gunnison Valley" RTA (1%) rows.

Local roofing hub

Roofing in Mt. Crested Butte, ColoradoCity hub

Roof permits nearby: Gunnison County

Crested Butte, CORoof permit Gunnison, CORoof permit Marble, CORoof permit Pitkin, CORoof permit Gunnison County, CORoof permit Roofing in ColoradoState hub

Related guides

Mountain-Town Roofing Permits Denver-Metro Roofing Permits Filing a Hail Insurance Claim Colorado Hail Season Prep Hiring a Contractor Hail-Belt Rules by State

The building permit authority for the Town of Mt. Crested Butte, Gunnison County. The Building Division "is responsible for administering the town's building codes through the permitting process," including implementation and enforcement of "all laws, ordinances, and codes that govern development within town limits," plus building design review preparation for Planning Commission and DDA-district compliance review. The town's older site, mtcrestedbuttecolorado.us (a GovOffice-hosted site with stale content, e.g. a 2020 COVID work-from-home notice still on its homepage), has been superseded by the current official site, mtcb.colorado.gov.

No NOAA hail reports within 10 miles of Mt. Crested Butte, CO in the last 5 years (data through Oct 7, 2026).

Source: NOAA Storm Prediction Center severe weather database and daily storm reports (reports since the start of the current year are preliminary), within 10 miles of Mt. Crested Butte, CO (Census point). Data through Oct 7, 2026, not updated since. A report is an observation, not a damage record.

Working an insurance claim in Mt. Crested Butte, CO? Everything on this page (drip edge, ice & water shield, inspections, Class 4 rules) formatted as a claim-ready evidence pack: verbatim ordinance quotes, code section cites, verification dates, and official source links, ready to attach to a supplement. See a real sample pack (PDF, 4 pages, free).

Code items like ice & water shield are what adjusters ask you to document.

Buy this jurisdiction's pack: $12 Delivered by email within minutes. Digital download: all sales are final once delivered, except for a failed delivery, a defective file, a duplicate purchase, or a pack materially different from its description. See Section 6 of our Terms of Use.

Questions about the Mt. Crested Butte, CO pack?

Not ready to buy, or need a different jurisdiction? Tell us and we’ll reply directly.

By submitting, you agree to our Terms of Use and Privacy Policy.

Sources

Free instant roof estimate — Mt. Crested Butte, CO

Ballpark your replacement in 20 seconds. No phone call required to see the number.

Roofing questions: Mt. Crested Butte, CO

Do you need a permit to replace a roof in Mt. Crested Butte, CO?

Yes, a permit is required to replace a roof in Mt. Crested Butte, CO.

Is ice & water shield required in Mt. Crested Butte, CO?

Yes. Town of Mt. Crested Butte Ordinance No. 6, Series 2024, Sec. 6-65 amends International Residential Code Section R905.1.2 in its entirety: "Section R905.1.2, Ice Barriers. An ice barrier shall be installed for all roofs. The ice barrier shall consist of a self-adhering polymer-modified bitumen sheet and shall be installed on the entire roof. Exception: Detached accessory structures not containing conditioned floor area." (A parallel IBC-track amendment appears at Sec. 6-31, amending Section 1507.2.8.2, with identical operative text.) This is a local ice-barrier-underlayment mandate under the IRC roof-covering chapter and is distinct from the separately-adopted Colorado Wildfire Resiliency Code's Class A roof-covering (ignition-resistance) requirement, which this record does not use to support impact-resistance or ice-barrier fields.

Do roofing contractors need a license or registration in Mt. Crested Butte, CO?

Yes. Per Town of Mt. Crested Butte Ordinance No. 6, Series 2024 (local amendments to the IBC and IRC): "All building permit applications for new construction shall include proof of a current Gunnison County Building Contractor license. The license shall be the type (Class A, Class B, or Class C) associated with the scope of work for the building permit application," and the same requirement applies to "additions and level 2 and level 3 alterations governed by the International Existing Building Code (IEBC) and International Building Code (IBC)" (IBC track) and to "additions and Reconstructions per Appendix AJ of the International Residential Code (IRC)" (IRC/residential track), with the building official having "discretion to waive this requirement." An exemption exists for "Property owners of an individual R1, R2, or R3 unit acting as their own contractor who provide proof of passing the contractor test associated with the Gunnison County contractor license."

What building code does Mt. Crested Butte, CO use?

Per the Building Division landing page: "The Mt. Crested Butte Town Council approved an Ordinance adopting the 2021 International Building Codes and the Colorado Model Electric Ready and Solar Ready Code, which is in effect as of January 3, 2025," listing: 2021 International Building Code, 2021 International Residential Code, 2021 International Fire Code, 2021 International Mechanical Code, 2021 International Fuel Gas Code, 2021 International Property Maintenance Code, 2021 International Energy Conservation Code, 2021 International Existing Building Code, the Colorado Model Electric Ready and Solar Ready Code, and the Colorado Wildfire Resiliency Code (electrical and plumbing code editions are set by the State of Colorado, which reviews/inspects those trades directly rather than the Town). The instrument behind the Town's I-Code adoptions is Ordinance No. 6, Series 2024, recorded in the Town's own Ordinance List and Disposition Table as Ordinance 24-6, adopted September 3, 2024, "Repeals and Replaces Buildings and Building Regulations; Repeals and Replaces Fire Prevention and Protection," codified at Chapters 6 and 8. That ordinance does not adopt the Colorado Wildfire Resiliency Code, and no adopting instrument for that code has been located: codified Chapter 6 runs Articles I through X ending with the Colorado Model Electric Ready and Solar Ready Code, Chapter 8 adopts only the fire code at Section 8-1, and the disposition table records no wildfire ordinance through Ordinance 25-20 of October 21, 2025, which is where the codification currently ends. The Colorado Wildfire Resiliency Code, 8 CCR 1507-39, became a statewide minimum on July 1, 2026 in areas designated wildland-urban interface under that code, after that codification date. Ordinance No. 6, Series 2024 contains a local roofing amendment, Sec. 6-31/6-65 "Ice Barriers for Roofs," reading in relevant part: "An ice barrier shall be installed for all roofs. The ice barrier shall consist of a self-adhering polymer-modified bitumen sheet and shall be installed on the entire roof. Exception: Detached accessory structures not containing conditioned floor area" (stated once each for the IBC and IRC amendment sections). The Town's own "Wildfire Resiliency Code Summary" PDF states the Colorado Wildfire Resiliency Code applies to "New construction" and "Re-siding or re-roofing projects impacting 25% or more of the structure," and requires under "Roofing": "Class A roofing materials required," "Roof valleys: minimum 26-gauge metal," "Gutters and downspouts: noncombustible," and "Vented roof openings: noncombustible, corrosion-resistant mesh with 1/8-inch maximum openings."