The Roofing Book

Permitting Authorities / Colorado / City of Fort Collins - Building Services

Do you need a permit to replace a roof in Fort Collins, CO?

Adopted code

City of Fort Collins - Building Services

Yes, a permit is required to replace a roof in Fort Collins, CO, issued by City of Fort Collins - Building Services. Roofing requires a building permit. Roofing contractors must hold a Fort Collins specialized trade contractor license, which requires passing the ICC roofing exam and providing proof of liability insurance.

Roof code checklist: Fort Collins, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesfortcollins.gov2026-07-12
Repair permit thresholdPublishedR105.224-irc-final-amendments.pdf2026-07-18
Layer limit / roof-overNot published
Deck & sheathingNot published
Drip edgeYesR905.2.8.524-irc-final-amendments.pdf2026-07-18
Ice & water shieldYesR905.1.224-irc-final-amendments.pdf2026-07-18
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingYes24-irc-final-amendments.pdf2026-07-18
Wind design criteriaNot published
Adopted codePublishedfortcollins.gov2026-07-12
Contractor license / registrationYesfortcollins.gov2026-07-12
Sales & use taxNot published

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
City of Fort Collins, Colorado
Jurisdiction type
city
Address
Fort Collins, CO
Contact
  • url: https://www.fortcollins.gov/Business/Building-and-Development
Permit portal
Permit portal
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • license: City of Fort Collins specialized trade contractor license (roofing) via the ICC roofing exam
  • insurance: proof of general liability insurance required
Permit process note
Roofing requires a building permit. Roofing contractors must hold a Fort Collins specialized trade contractor license, which requires passing the ICC roofing exam and providing proof of liability insurance.
Adopted code
International Residential Code and International Building Code with City of Fort Collins amendments; verify the current adopted edition with the city.
Drip edge
Required — Not locally amended: Fort Collins' 2024 IRC local amendments document (which amends multiple Chapter 9 Roof Assemblies sections, e.g. adding R905.2.4.2) does not modify or delete R905.2.8.5, so the base 2024 IRC drip-edge requirement applies unamended in Fort Collins. About drip edge
Ice & water shield
Required — 2024 IRC R905.1.2 (unamended, adopted by City of Fort Collins): ice barrier required where Table R301.2 designates it (Fort Collins is designated "Required"); barrier must extend from the lowest roof edge to a point not less than 24 in. inside the exterior wall line (36 in. measured along the slope on roofs pitched 8:12 or greater). About ice & water barrier
Impact-resistant roofing
Required — 2024 IRC local amendment adds Section R905.2.4.2: "Asphalt shingles shall be Class 4 impact resistant, tested in accordance with UL 2218, and installed in accordance with the manufacturer's installation instructions." Applies to re-roofs via R908.1. Exceptions allow non-Class-4 replacement only when matching color/style Class 4 shingles are unavailable, or for repairs not exceeding 49% of roof area (or additions not exceeding 50% of original building size).
Repair permit threshold
Roofing repair or replacement work not exceeding one square (100 square feet) of covering per building is exempt from permit (2024 IRC Section R105.2, Work exempt from permit, as adopted/amended by the City of Fort Collins).

Local roofing hub

Roofing in Fort Collins, ColoradoCity hub

Roof permits nearby: Larimer County

Berthoud, CORoof permit Estes Park, CORoof permit Loveland, CORoof permit Timnath, CORoof permit Wellington, CORoof permit Unincorporated Larimer County, CORoof permit Roofing in ColoradoState hub

Related guides

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 City of Fort Collins in Larimer County. Issues roofing permits and licenses roofing contractors under its specialized trade contractor program.

Hail reports near Fort Collins, CO

Reports, last 24 months
4
Largest, last 24 months
1.50 in Jun 17, 2025
Most recent
Sep 16, 2025 0.75 in
Reports, last 5 years
25
5 most recent reports, last 5 years
DateHail sizeDistance
Sep 16, 20250.75 in5 mi S
Jun 17, 20251.50 in10 mi NNE
Jun 17, 20251.25 in9 mi NE
Jun 17, 20251.00 in7 mi ESE
Jul 20, 20241.00 in2 mi NNE

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 Fort Collins, 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 Fort Collins, 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.

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 Fort Collins, 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 — Fort Collins, CO

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

Roofing questions: Fort Collins, CO

Do you need a permit to replace a roof in Fort Collins, CO?

Yes, a permit is required to replace a roof in Fort Collins, CO. Roofing repair or replacement work not exceeding one square (100 square feet) of covering per building is exempt from permit (2024 IRC Section R105.2, Work exempt from permit, as adopted/amended by the City of Fort Collins).

Is ice & water shield required in Fort Collins, CO?

Yes. 2024 IRC R905.1.2 (unamended, adopted by City of Fort Collins): ice barrier required where Table R301.2 designates it (Fort Collins is designated "Required"); barrier must extend from the lowest roof edge to a point not less than 24 in. inside the exterior wall line (36 in. measured along the slope on roofs pitched 8:12 or greater).

Is drip edge required in Fort Collins, CO?

Yes. Not locally amended: Fort Collins' 2024 IRC local amendments document (which amends multiple Chapter 9 Roof Assemblies sections, e.g. adding R905.2.4.2) does not modify or delete R905.2.8.5, so the base 2024 IRC drip-edge requirement applies unamended in Fort Collins.

Do roofing contractors need a license or registration in Fort Collins, CO?

Yes. City of Fort Collins specialized trade contractor license (roofing) via the ICC roofing exam

What building code does Fort Collins, CO use?

International Residential Code and International Building Code with City of Fort Collins amendments; verify the current adopted edition with the city.