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

City of Gunnison, Colorado

city

Gunnison, CO

Not required

The building office accepts all building and sign permits online through the applications and forms section of the city website. All electrical and plumbing permits and inspections are currently managed by the State of Colorado.

The City of Gunnison operates under the 2021 International Code Council building codes and the amendments cited within the City of Gunnison Municipal Code, Title 14 Technical Codes.

Required — Required, and scoped to where ice dams form rather than across the whole deck. The City of Gunnison fills in the climatic and geographic design criteria table and answers the ice barrier underlayment row with "In roof valleys and eaves". About ice & water barrier

Not required — The City of Gunnison's Ordinance No. 9, Series 2022, introduced and passed on first reading October 25, 2022 and adopted on second and final reading November 8, 2022, was read in full. It repeals and re-enacts Title 14, Technical Codes, of the City Code and adopts by reference the 2021 editions of the International Building, Residential, Existing Building, Energy Conservation, Mechanical, Fuel Gas, Fire and Property Maintenance Codes and the International Wildland-Urban Interface Code, each followed by the City's own itemized amendment list. Those amendments were read in full. On roofing they exempt re-roofing without alteration of the roof deck structure from the permit requirement, on both the Building Code and Residential Code sides; add a new Section 1502.5 providing that to the greatest extent practicable water, snow or ice draining from a roof shall not be allowed to flow or shed onto public or private property, rights-of-way or any area deemed a safety hazard; and set the climatic and geographic design criteria, under which ice barrier underlayment is required in roof valleys and eaves. No amendment touches Chapter 9 of the Residential Code or Chapter 15 of the Building Code beyond that drainage addition, and neither the adopted codes nor any City amendment requires impact-resistant roof coverings or names a UL 2218 or Class 4 standard. The only statewide instrument reaching reroofing is the Colorado Wildfire Resiliency Code, 8 CCR 1507-39, effective July 1, 2026 in areas designated wildland- urban interface under that code, which requires a Class A roof covering tested to ASTM E108 or UL 790 where 25 percent or more of the roof surface is replaced, at Sections 101.6 and 403.2; that is a fire classification independent of impact rating, and the code sets no impact-resistance requirement.

There is no size threshold; the test is whether the roof deck structure is touched. The City of Gunnison amends the permit-exemption list by adding, as item 14, "Re-roofing without alteration of roof deck structure" (item 15 does the same for re-siding). A reroof of any area is therefore exempt from permit so long as the deck structure is left alone, and any work that alters the deck structure needs a permit.

An ultimate design wind speed of 115 mph measured as a 3-second gust. The City of Gunnison fills in the climatic and geographic design criteria table, which also sets a ground snow load of 57 pounds per square foot, severe weathering, a frost line depth of 36 inches, slight termite and decay probabilities, a winter design temperature of minus 10 degrees Fahrenheit, an air freezing index of 3,447 and a mean annual temperature of 37.2 degrees. The seismic design category cell is left blank on the City's completed table.

8.9 percent combined: 2.9 percent state, 1 percent Gunnison County, 1 percent Gunnison Valley Rural Transportation Authority and 4 percent City of Gunnison. Note a change of collection agent rather than of rate: beginning January 1, 2026 the City's sales tax is collected by the State of Colorado rather than self-collected by the City, which the City states on its own sales tax page and which the Colorado Department of Revenue publication DR 1002 marks as a changed row in its January 2026 edition. Editions of DR 1002 predating that change still show the City as self-collecting.