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Permitting Authorities / Colorado / Gunnison County Community Development - Building Office

Do you need a permit to replace a roof in Gunnison County, CO?

Adopted code

Gunnison County Community Development - Building Office

Yes, a permit is required to replace a roof in Gunnison County, CO, issued by Gunnison County Community Development - Building Office. Building permits are mandatory; construction work regulated by adopted building codes and fire and public safety regulations requires a permit before work can begin, including repairs which change or affect the structure of a building. Work must commence within 180 days of permit issuance and cannot be suspended or abandoned for a period of 180 days. Gunnison County has no jurisdiction within city limits.

Roof code checklist: Gunnison County, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesgunnisoncounty.org2026-08-03
Repair permit thresholdNot published
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeYesR905.2.8.5gunnisoncounty.org2026-08-03
Ice & water shieldYesgunnisoncounty.org2026-08-03
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNogunnisoncounty.org2026-08-03
Wind design criteriaPublishedgunnisoncounty.org2026-08-03
Adopted codePublishedgunnisoncounty.org2026-07-14
Contractor license / registrationYesgunnisoncounty.org2026-07-14
Sales & use taxPublishedtax.colorado.gov2026-08-27

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
Gunnison County, Colorado
Jurisdiction type
county
Address
Gunnison, CO
Contact
  • url: https://gunnisoncounty.org/411/Building-Permit
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • license: Gunnison County shall not issue a building permit until the required building contractor license has been issued (permits issued after February 1, 2023). Applicants must hold ICC certification obtained through Pearson Vue testing (exam codes G11, G12, or G13), carry general liability insurance of at least 1,000,000 dollars per occurrence plus workers' compensation, and licenses are valid for 36 months. Owner-builders and state-licensed electricians and plumbers are excepted.
Permit process note
Building permits are mandatory; construction work regulated by adopted building codes and fire and public safety regulations requires a permit before work can begin, including repairs which change or affect the structure of a building. Work must commence within 180 days of permit issuance and cannot be suspended or abandoned for a period of 180 days. Gunnison County has no jurisdiction within city limits.
Adopted code
Gunnison County has adopted and amended the International Building Code, International Fuel Gas Code, International Mechanical Code, International Residential Code, and International Energy Conservation Code, per Resolution 2023-22 adopting the 2021 codes.
Drip edge
Required — Not separately amended by Gunnison County. Resolution 23-22's Attachment B ("Amendments to the International Residential Code, 2021 Edition") is a delta document listing only amended sections in ascending order; it was read in full and moves directly from Section R313.2 to Section N1101.13 (the energy-code chapter), containing no R400-R900-series entry of any kind, so the base 2021 IRC drip-edge requirement (R905.2.8.5) stands as adopted code. About drip edge
Ice & water shield
Required — Gunnison County's Table R301.2 amendment (Resolution 23-22, Attachment B) prints "Ice Barrier Underlayment Required: Yes" as one of the added design-criteria rows. About ice & water barrier
Impact-resistant roofing
Not required — Gunnison County's Resolution 23-22 Attachment B (2021 IRC amendments) and Attachment A (2021 IBC amendments) were both read in full and contain no UL 2218, Class 4, or impact-resistance provision anywhere; the only roof-covering rating language found countywide is the separate Wildland-Urban Interface "Class A" fire-rating requirement (ASTM E108/UL 790), which is a fire-exposure rating, not an impact-resistance standard.
Wind design criteria
Gunnison County's 2021 IRC amendments (Resolution 23-22, Attachment B) amend "Table R301.2 Climatic and Geographic Design Criteria" to add: "Ground Snow Load: Varies. The value of roof (or other) snow load shall be equal to the 'recommended basic snow load' as defined in the '2016 Colorado Design Snow Loads', prepared by the 'Structural Engineers Association of Colorado'. ASCE 7 procedures shall be used to determine roof snow loads. Wind Design: Speed (mph): 104, 3-second gust for exposure C. Topographic effects: No. Special wind region: No. Windborne debris zone: No. Seismic Design Category: C for soil site class D. Subject to Damage from: Weathering: Severe. Frost line depth: 36". Termite: Slight. Ice Barrier Underlayment Required: Yes. Flood Hazards: 1989, Resolution 89-31, 2013 Firm maps. Air Freezing Index: 3447 (BF-days-100year). Mean Annual Temp: 37.2F."
Sales & use tax
4.90% combined for most of unincorporated Gunnison County (state 2.9% + Gunnison County 1% + Gunnison Valley RTA 1%); 3.90% in the areas the RTA excludes. Gunnison County sales tax is state-collected; DR 1002 (rev. 06/19/19) lists the county's own rate as "Gunnison 1%" and separately lists the "Gunnison Valley" Regional Transportation Authority sales tax as 1%, applicable to "Gunnison County except for areas surrounding the towns of Marble, Ohio City, Pitkin and Somerset." Re-verified 2026-08-27 against the January 2026 edition of Colorado Department of Revenue form DR 1002, read from a rendered image of its tables rather than from extracted text: the state, county and city figures above match that edition exactly. Where the text above names the June 19, 2019 revision of DR 1002, that describes the edition the figure was originally taken from and is not a current citation.

Roof permits nearby: Gunnison County

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

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The building permit authority for unincorporated Gunnison County, Colorado (no jurisdiction within city limits). Building permits are mandatory for construction work regulated by the adopted codes, and a Gunnison County building contractor license is required before permits are issued.

No NOAA hail reports within 10 miles of the center of Gunnison County, 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 the center of Gunnison County, CO. Data through Oct 7, 2026, not updated since. A report is an observation, not a damage record.

Working an insurance claim in Gunnison County, 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 drip edge and ice & water shield are what adjusters ask you to document.

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Sources

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Roofing questions: Gunnison County, CO

Do you need a permit to replace a roof in Gunnison County, CO?

Yes, a permit is required to replace a roof in Gunnison County, CO.

Is ice & water shield required in Gunnison County, CO?

Yes. Gunnison County's Table R301.2 amendment (Resolution 23-22, Attachment B) prints "Ice Barrier Underlayment Required: Yes" as one of the added design-criteria rows.

Is drip edge required in Gunnison County, CO?

Yes. Not separately amended by Gunnison County. Resolution 23-22's Attachment B ("Amendments to the International Residential Code, 2021 Edition") is a delta document listing only amended sections in ascending order; it was read in full and moves directly from Section R313.2 to Section N1101.13 (the energy-code chapter), containing no R400-R900-series entry of any kind, so the base 2021 IRC drip-edge requirement (R905.2.8.5) stands as adopted code.

Do roofing contractors need a license or registration in Gunnison County, CO?

Yes. Gunnison County shall not issue a building permit until the required building contractor license has been issued (permits issued after February 1, 2023). Applicants must hold ICC certification obtained through Pearson Vue testing (exam codes G11, G12, or G13), carry general liability insurance of at least 1,000,000 dollars per occurrence plus workers' compensation, and licenses are valid for 36 months. Owner-builders and state-licensed electricians and plumbers are excepted.

What building code does Gunnison County, CO use?

Gunnison County has adopted and amended the International Building Code, International Fuel Gas Code, International Mechanical Code, International Residential Code, and International Energy Conservation Code, per Resolution 2023-22 adopting the 2021 codes.