Fort Collins, CO Building Safety: Building Permits (2026)
Key Facts
- Codes adopted
- 2024 IBC, IRC, IECC
- Adoption authority
- C.R.S. § 31-16-202; Charter Art. II § 7
- Exempt work items
- 18 categories under Sec. 105.2
- Permit fees governed by
- City Code Chapter 7.5
- Permit validity requires
- Fees paid first (Sec. 109.1)
Summary
Fort Collins requires a building permit for construction work unless it falls on an 18-item exemption list adopted under the 2024 International Building Code, covering things like small sheds, low fences, and minor repairs.
105.2 Work exempt from permit. Exemptions from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. Permits shall not be required for the following: 1. One-story, detached, accessory structures used for lawn and garden equipment storage, tool storage and similar uses...
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Municipal Code: Supplement 155 | Transitional Land Use Code (for project before May 17, 2024): Supplement 61 | Traffic Code: Supplement 27).
Full Breakdown
Sec. S. Section 31-16-202 and Article II, Section 7 of the City Charter. Sec. 2 of the adopted IBC, framing the default rule that a permit is required for building work unless the project matches a specific exemption: 'Exemptions from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. Permits shall not be required for the following:' The amended list that follows runs eighteen items, including one-story accessory storage structures under 120 square feet and 8 feet tall, fences up to 6 feet, retaining walls up to 4 feet, sidewalks and driveways under 30 inches above grade, painting and similar finish work, decks under 200 square feet not attached to a building, roofing repairs under one square (100 square feet) of covering, and temporary special-event structures. 1.
Violations & Fines
Performing work that requires a permit without first obtaining one is enforceable by the Fort Collins Building Services division through stop-work orders, mandatory after-the-fact permitting with potential double fees, and citation under the general building-code enforcement and penalty provisions; unpermitted work can also delay a certificate of occupancy or property sale until it is brought into compliance.
Frequently Asked Questions
What building code does Fort Collins use?
Is a permit required for every home project?
When does a Fort Collins building permit become valid?
Sources & Official References
Other rules in Fort Collins
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How other cities in Larimer County handle building permits.