The Roofing Book

Permitting Authorities / City of Westminster - Community Development

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

Adopted code

City of Westminster - Community Development

Yes — a permit is required to replace a roof in Westminster, CO, issued by City of Westminster - Community Development. Replacing a roof requires a permit; the application asks for the number of squares, brand, type, color, number of stories, and an HOA approval letter if applicable. Contractors register with the Community Development Department via the eTRAKiT portal.

Jurisdiction
City of Westminster, Colorado
Jurisdiction type
city
Address
Westminster, CO
Contact
  • url: https://www.westminsterco.gov/833/Permits-Licenses
Permit portal
Permit portal
Roofing permit required
Required
Contractor registration required
Required
Registration details
  • license: City of Westminster contractor registration through the Community Development Department
Permit process note
Replacing a roof requires a permit; the application asks for the number of squares, brand, type, color, number of stories, and an HOA approval letter if applicable. Contractors register with the Community Development Department via the eTRAKiT portal.
Adopted code
International Residential Code and International Building Code with City of Westminster amendments; verify the current adopted edition with the city.
Drip edge
Required — "Drip edge shall be installed at all eaves and rakes of shingled roofs." (R903.2.1 Locations, as cited in the city's Residential Re-roofing Guide) About drip edge
Mid-roof inspection
Required — "A mid-roof inspection is required for any batten type roofing application (tile, coated metal, etc.) prior to concealment of battens. No mid-roof is required for asphalt shingle installation."
Impact-resistant roofing
Not required — The City of Westminster's 2021 Code Amendments Public Summary (Building Division) was reviewed in full, including its IRC amendment items (scope alignment, roof recover, fire sprinklers, flat-roof access, flood-hazard appendix); it contains no impact-resistance or UL 2218 requirement for roof coverings.
Repair permit threshold
"When a building of any size is subjected to cumulative roof covering damage exceeding one square (one-hundred square feet), correction of the damage is considered a replacement and the roof covering shall be replaced in its entirety. Re-roof permits are required for full roof replacement."
Wind design criteria
Design Criteria for Structures ("As adopted for the City of Westminster," "Effective 2018"): "IRC Wind Speed: The minimum Ultimate design wind speed, Vult, in miles per hour per the zones shown on the map below: Zone 1 - 131 mph; Zone 2 - 142 mph; Zone 3 - 155 mph" (zones run west-to-east, split along Wadsworth Blvd./Pkwy. and Sheridan Blvd.). "The wind exposure is designated as Exposure B unless specified as Exposure C by the Building Official." Topographic effects, windborne debris zone, and special wind region are not stated as table cells in this document; the City's Residential Re-roofing Guide separately states that Westminster is in a special wind region, and its high-wind nailing requirement is recorded under the fastening requirements.
Roof layer limit / recover
"A roof recovering is permitted in accordance with IRC 908.3.1 and per manufacturer's instructions." (Residential Re-roofing Guide, "based on the 2021 International Residential Code as amended by the City of Westminster.") Base-code rule, read at 2021 IRC Section R908.3.1.1 (Roof recover not allowed) and quoted here rather than left behind the ICC paywall: a roof recover "shall not be permitted" where "the existing roof has two or more applications of any type of roof covering" (nor where the existing covering is water soaked or deteriorated, or is slate, clay, cement or asbestos-cement tile). One existing layer may therefore be recovered; a second existing layer forces tear-off to the deck.
Deck & sheathing requirements
"R905.2.1 Sheathing requirements. Asphalt shingles shall be fastened to solidly sheathed decks. a. Lumber roof sheathing is acceptable provided the gaps comply with the manufacturer's installation instructions. b. Where new decking is required and/or provided A ROOF DECKING INSPECTION is required prior to installation of any roof coverings being installed, i.e. prior to a mid-roof inspection."
Fastening requirements
The City's Residential Re-roofing Guide states "The City of Westminster is in a special wind region and will require high wind nailing as per manufacturer requirements for high wind for all asphalt shingle installations." No fastener count is stated: the requirement is to follow the shingle manufacturer's high-wind pattern, which commonly exceeds the IRC R905.2.6 floor of four per strip shingle. About roofing nails
Sales & use tax
9.00% combined in Adams County / 8.75% in Jefferson County (state 2.9% + RTD 1.0% + CD 0.1% + Westminster city 4.25% + county 0.75% Adams or 0.50% Jefferson), effective 2026; home-rule self-collected. Westminster pre-pays use tax on the building permit in lieu of sales tax on construction materials: the estimated materials cost (permit valuation x 50%) is taxed at the city's 4.25% use tax rate, reconciled against actual costs after final inspection/certificate of occupancy.

Local roofing hub

Roofing in Westminster, ColoradoCity hub

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The building permit authority for the City of Westminster, spanning Adams and Jefferson counties. Issues re-roofing permits through its eTRAKiT portal and registers contractors.

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Roofing questions — Westminster, CO

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

Required. "When a building of any size is subjected to cumulative roof covering damage exceeding one square (one-hundred square feet), correction of the damage is considered a replacement and the roof covering shall be replaced in its entirety. Re-roof permits are required for full roof replacement."

Is drip edge required?

Required — "Drip edge shall be installed at all eaves and rakes of shingled roofs." (R903.2.1 Locations, as cited in the city's Residential Re-roofing Guide).

Is a mid-roof inspection required?

Required — "A mid-roof inspection is required for any batten type roofing application (tile, coated metal, etc.) prior to concealment of battens. No mid-roof is required for asphalt shingle installation.".

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

Required. City of Westminster contractor registration through the Community Development Department.

What building code does Westminster, CO use?

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