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Permitting Authorities / Town of Arriba - Building Codes

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

Adopted code

Town of Arriba - Building Codes

Yes — a permit is required to replace a roof in Arriba, CO, issued by Town of Arriba - Building Codes. Ordinance No. 154 (adopted June 27, 2023) states its codes are adopted "pursuant to Title 31, Article 16, Part 2 of Colorado Revised Statutes" and that the adopted International Codes "provide for the issuance of permits and the collection of fees, therefore." Section 103.1 states "the office of the Town Clerk or her/his designee is hereby the official in charge thereof shall be known as the building official." Section R105.2 amends the Residential Code's work-exempt-from-permit list so that only "one-story detached accessory structures, provided that the floor area does not exceed 120 square feet" are exempt from a building permit. Separately, the Town's homepage states "The Town of Arriba has adopted the Colorado Wild Fire Resiliency Code" and directs that "for all new builds or modifications to buildings please see the Ordinance 159 Wild Fire Code.".

Jurisdiction
Town of Arriba, Colorado
Jurisdiction type
city
Address
711 Front St, Arriba, CO 80804
Contact
  • url: https://townofarriba.colorado.gov/contact-us
  • phone: 719-768-3381
  • email: [email protected]
Roofing permit required
Required
Contractor registration required
Not required
Permit process note
Ordinance No. 154 (adopted June 27, 2023) states its codes are adopted "pursuant to Title 31, Article 16, Part 2 of Colorado Revised Statutes" and that the adopted International Codes "provide for the issuance of permits and the collection of fees, therefore." Section 103.1 states "the office of the Town Clerk or her/his designee is hereby the official in charge thereof shall be known as the building official." Section R105.2 amends the Residential Code's work-exempt-from-permit list so that only "one-story detached accessory structures, provided that the floor area does not exceed 120 square feet" are exempt from a building permit. Separately, the Town's homepage states "The Town of Arriba has adopted the Colorado Wild Fire Resiliency Code" and directs that "for all new builds or modifications to buildings please see the Ordinance 159 Wild Fire Code."
Inspection requirements
Ordinance No. 154's amended Table R301.2 Climatic and Geographic Design Criteria for the Town sets ground snow load at 30 psf and basic wind speed at 85 mph, with a frost line depth of 36 inches, and no mapped flood hazard area. The amended Section R905.1.2 (Ice barriers) states, "On roofs with a slope equal to or less than four units vertical in 12 units horizontal (33-percent slope), an ice barrier shall be installed for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," consisting of "not fewer than two layers of underlayment cemented together, or a self-adhering polymer-modified bitumen sheet."
Adopted code
Ordinance No. 154 adopts, by reference, "the International Building Code, 2018 edition, the International Residential Code, 2018 edition, the International Mechanical Code, 2018 edition and the International Energy Conservation Code, 2018 edition, including the appendices of each code specified herein," with Town-specific amendments to sections including ice barriers, frost line depth, smoke/CO alarms, and electric vehicle charging systems. The Town separately adopted the Colorado Wildfire Resiliency Code by Ordinance No. 159.
Drip edge
Required — Unamended 2018 IRC Section R905.2.8.5, Drip edge, requires: "A drip edge shall be provided at eaves and rake edges of shingle roofs. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm)." Ordinance No. 154 does not amend this section; its only Chapter 9 amendment is to the ice-barrier provision. About drip edge
Ice & water shield
Required — Ordinance No. 154 replaces Section R905.1.2, Ice barriers, with its own provision, conditioned on roof slope rather than the base code's ice-forming-history designation: "On roofs with a slope equal to or less than four units vertical in 12 units horizontal (33-percent slope), an ice barrier shall be installed for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," consisting of "not fewer than two layers of underlayment cemented together, or a self-adhering polymer-modified bitumen sheet," extending from the lowest roof edges to a point not less than 24 inches inside the exterior wall line. The Town's amended Table R301.2 cross-refers to this section rather than stating a flat yes or no. About ice & water barrier
Mid-roof inspection
Not required — No mid-roof, dry-in or underlayment inspection is required in Arriba, and this is settled from the Town's own adopting instrument read in full. Ordinance No. 154 adopts the 2018 International Building, Residential, Mechanical and Energy Conservation Codes by reference and then sets out the Town's amendments at length. Two measurements decide the question. FIRST, the ordinance contains ZERO occurrences of "R109" -- the IRC section that creates the inspection scheme -- so Arriba does not amend it, and the base 2018 IRC inspections govern unaltered. SECOND, the ordinance's four uses of the word "inspection" have nothing to do with construction stages: two concern public access to the code copies ("A digital copy of each code adopted will be available on the Town of Arriba website at least 15 days preceding the hearing hereon and shall be kept there for public inspection while this ordinance is in force") and two name the office where those copies are held, "the Office of the Town Clerk and Building Inspector". Not one creates an inspection of work. 🟢 This is a sourced negative rather than an absence of information, and the ordinance proves the point against itself: Arriba DID amend the roofing chapter where it wanted to, replacing Section R905.1.2 Ice barriers with its own text requiring an ice barrier on roofs sloped four in twelve or less for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes. A town that reached into the roofing chapter to rewrite the ice-barrier rule, and still added no inspection to verify it, did not simply overlook the subject. The base 2018 IRC Section R109 was then read directly: it enumerates foundation, plumbing/mechanical/gas/electrical rough, floodplain, frame and masonry, other, fire-resistance-rated construction and final, with no roof-covering stage, and across the whole section the word "roof" appears exactly once -- in R109.1.4, requiring that framing inspection "shall be made after the roof, masonry, framing, firestopping, draftstopping and bracing are in place." NOTE R109.1.5 preserves the building official's authority to require "any other inspections to ascertain compliance", which is discretion, not a scheduled mid-roof stage.
Impact-resistant roofing
Not required — Town of Arriba Ordinance No. 154 was read in full. It adopts by reference the 2018 editions of the International Building Code, International Residential Code, International Mechanical Code and International Energy Conservation Code, including all appendices, and then sets out the Town's specific amendments. Its roofing amendments are all ice barrier: International Building Code Section 1507.1.2 and International Residential Code Section R905.1.2 are each replaced with the Town's own ice-barrier provision, and Section 1507.17.4.2 is replaced to cross-refer to Section 1507.1.2. The ordinance's climatic and geographic design criteria table carries an 85 mph wind speed and refers to that same ice-barrier section. No provision of the ordinance requires impact-resistant roof coverings, and it names no UL 2218 or Class 4 standard. The Colorado Energy Office Statewide Building Code Adoption dataset, revised April 2, 2026, likewise reports a 2018 adoption for the Town.
Repair permit threshold
No dollar-value or minor-repair threshold specific to roofing work exists. Ordinance No. 154 amends only the accessory-structure item of the Section R105.2 exemption list; it does not add a cost-based exemption for roofing. The unamended Section R105.2.2 "ordinary repairs" provision states: "Application or notice to the building official is not required for ordinary repairs to structures... Such repairs shall not include the cutting away of any wall, partition or portion thereof, the removal or cutting of any structural beam or load-bearing support..." and does not name roof covering or roof replacement.
Wind design criteria
Ordinance No. 154's replacement Table R301.2 sets: Ground Snow Load 30 psf, Basic Wind Speed 85 mph, Topographic Effect None, Frost Line Depth 36 inches, no mapped flood hazard area; the table cross-refers to Section R905.1.2 for ice-barrier applicability rather than stating it directly.
Roof layer limit / recover
Ordinance No. 154 amends only the ice-barrier provisions of Chapter 9 (Section R905.1.2); it does not touch Section R908, Reroofing. Under the unamended 2018 IRC Section R908.3.1.1, Roof recover not allowed: "A roof recover shall not be permitted where any of the following conditions occur: ... 3. Where the existing roof has two or more applications of any type of roof covering." Because a recover is barred once two layers already exist, the maximum standing layer count under a recover is two.
Deck & sheathing requirements
Unamended 2018 IRC Section R803.1 provides: "Allowable spans for lumber used as roof sheathing shall conform to Table R803.1." Table R803.1 sets a minimum net thickness of 5/8 inch for lumber sheathing at 24-inch rafter/beam spacing. Wood structural panel sheathing must conform to DOC PS 1, DOC PS 2, CSA O437 or CSA O325, graded per Table R503.2.1.1(1). Ordinance No. 154 contains no amendment to this section.
Sales & use tax
6.9% combined: 2.9% Colorado state, 2% Lincoln County, 2% Town of Arriba. No special taxing district applies within town limits.

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The building permit authority for the Town of Arriba, a small agricultural community on Interstate 70 in northeastern Lincoln County. Ordinance No. 154 adopts the 2018 International Building, Residential, Mechanical, and Energy Conservation Codes by reference, with the Town Clerk's office designated as the building official. The Town separately adopted the Colorado Wildfire Resiliency Code by Ordinance No. 159 for all new builds and building modifications.

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Roofing questions — Arriba, CO

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

Required. No dollar-value or minor-repair threshold specific to roofing work exists. Ordinance No. 154 amends only the accessory-structure item of the Section R105.2 exemption list; it does not add a cost-based exemption for roofing. The unamended Section R105.2.2 "ordinary repairs" provision states: "Application or notice to the building official is not required for ordinary repairs to structures... Such repairs shall not include the cutting away of any wall, partition or portion thereof, the removal or cutting of any structural beam or load-bearing support..." and does not name roof covering or roof replacement.

Is ice & water shield required in Arriba, CO?

Required — Ordinance No. 154 replaces Section R905.1.2, Ice barriers, with its own provision, conditioned on roof slope rather than the base code's ice-forming-history designation: "On roofs with a slope equal to or less than four units vertical in 12 units horizontal (33-percent slope), an ice barrier shall be installed for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes," consisting of "not fewer than two layers of underlayment cemented together, or a self-adhering polymer-modified bitumen sheet," extending from the lowest roof edges to a point not less than 24 inches inside the exterior wall line. The Town's amended Table R301.2 cross-refers to this section rather than stating a flat yes or no..

Is drip edge required?

Required — Unamended 2018 IRC Section R905.2.8.5, Drip edge, requires: "A drip edge shall be provided at eaves and rake edges of shingle roofs. Adjacent segments of drip edge shall be overlapped not less than 2 inches (51 mm)." Ordinance No. 154 does not amend this section; its only Chapter 9 amendment is to the ice-barrier provision..

Is a mid-roof inspection required?

Not required — No mid-roof, dry-in or underlayment inspection is required in Arriba, and this is settled from the Town's own adopting instrument read in full. Ordinance No. 154 adopts the 2018 International Building, Residential, Mechanical and Energy Conservation Codes by reference and then sets out the Town's amendments at length. Two measurements decide the question. FIRST, the ordinance contains ZERO occurrences of "R109" -- the IRC section that creates the inspection scheme -- so Arriba does not amend it, and the base 2018 IRC inspections govern unaltered. SECOND, the ordinance's four uses of the word "inspection" have nothing to do with construction stages: two concern public access to the code copies ("A digital copy of each code adopted will be available on the Town of Arriba website at least 15 days preceding the hearing hereon and shall be kept there for public inspection while this ordinance is in force") and two name the office where those copies are held, "the Office of the Town Clerk and Building Inspector". Not one creates an inspection of work. 🟢 This is a sourced negative rather than an absence of information, and the ordinance proves the point against itself: Arriba DID amend the roofing chapter where it wanted to, replacing Section R905.1.2 Ice barriers with its own text requiring an ice barrier on roofs sloped four in twelve or less for asphalt shingles, metal roof shingles, mineral-surfaced roll roofing, slate and slate-type shingles, wood shingles and wood shakes. A town that reached into the roofing chapter to rewrite the ice-barrier rule, and still added no inspection to verify it, did not simply overlook the subject. The base 2018 IRC Section R109 was then read directly: it enumerates foundation, plumbing/mechanical/gas/electrical rough, floodplain, frame and masonry, other, fire-resistance-rated construction and final, with no roof-covering stage, and across the whole section the word "roof" appears exactly once -- in R109.1.4, requiring that framing inspection "shall be made after the roof, masonry, framing, firestopping, draftstopping and bracing are in place." NOTE R109.1.5 preserves the building official's authority to require "any other inspections to ascertain compliance", which is discretion, not a scheduled mid-roof stage..

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

Not required.

What building code does Arriba, CO use?

Ordinance No. 154 adopts, by reference, "the International Building Code, 2018 edition, the International Residential Code, 2018 edition, the International Mechanical Code, 2018 edition and the International Energy Conservation Code, 2018 edition, including the appendices of each code specified herein," with Town-specific amendments to sections including ice barriers, frost line depth, smoke/CO alarms, and electric vehicle charging systems. The Town separately adopted the Colorado Wildfire Resiliency Code by Ordinance No. 159.