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Permitting Authorities / Colorado / City of Alamosa - Building Department

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

Adopted code

City of Alamosa - Building Department

Yes, a permit is required to replace a roof in Alamosa, CO, issued by City of Alamosa - Building Department. The Building Department performs plan reviews, issues permits, and conducts inspections for life-safety, fire, structural, and energy code compliance. A dedicated Roofing Permit Application form is provided for reroofing projects, and a Building Permit Fee Calculator plus a published fee schedule are available on the department's site.

Roof code checklist: Alamosa, CO

ItemAnswerCode citeSourceVerified
Permit to replace a roofYesalamosa.gov2026-10-06
Repair permit thresholdNot published
Layer limit / roof-overPublishedR908.3.1.1library.municode.com2026-07-31
Deck & sheathingNot published
Drip edgeYesR905.2.8.5library.municode.com2026-07-31
Ice & water shieldYeslibrary.municode.com2026-07-31
Mid-roof inspectionNot published
Impact-resistant (Class 4) roofingNolibrary.municode.com2026-07-31
Wind design criteriaPublishedlibrary.municode.com2026-07-31
Adopted codePublishedalamosa.gov2026-10-06
Contractor license / registrationYesalamosa.gov2026-10-06
Sales & use taxPublishedalamosa.gov2026-07-31

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 Alamosa, Colorado
Jurisdiction type
city
Address
Alamosa, CO
Contact
  • url: https://www.alamosa.gov/building-department
  • phone: 719-589-6631
Permit portal
Permit portal
Roofing permit required
Required
Contractor registration required
Required
Permit process note
The Building Department performs plan reviews, issues permits, and conducts inspections for life-safety, fire, structural, and energy code compliance. A dedicated Roofing Permit Application form is provided for reroofing projects, and a Building Permit Fee Calculator plus a published fee schedule are available on the department's site.
Inspection requirements
Inspections must be scheduled at least one business day in advance and are performed between 10am and 4pm. Electrical and plumbing inspections are not completed by the Building Department; those are handled by the State of Colorado.
Adopted code
The City of Alamosa has adopted the 2018 International Building Code, 2018 International Residential Code, 2018 International Mechanical Code, 2018 International Energy Conservation Code, 2018 International Fire Code, 2018 International Property Maintenance Code, and 2018 International Existing Building Code.
Drip edge
Required — Not separately amended by the City of Alamosa. The City adopts the 2015 IRC by reference (§ 4-21) and its 26 numbered modifications do not delete or modify Section R905.2.8.5, so the base IRC drip-edge requirement stands as adopted code. About drip edge
Ice & water shield
Required — Alamosa's amended IRC Table R301.2(1) (Alamosa Municipal Code § 4-21(2)) lists "Ice barrier underlayment: Yes" as the city's completed determination. About ice & water barrier
Impact-resistant roofing
Not required — No City of Alamosa amendment mandates Class 4 / UL 2218 impact-resistant roof coverings. Alamosa Municipal Code § 4-21's full 26-item numbered modification list to the 2015 IRC, plus the separate 6-item 2018 IBC modification list in the same section, were read in full and contain no such addition.
Wind design criteria
Alamosa's amended IRC Table R301.2(1) (Alamosa Municipal Code § 4-21(2), which adopts the 2015 IRC with modifications) lists "Ultimate wind speed design (mph/mps): 115/51" with "Topographic effects: No," "Special wind region: No," and "Wind-borne debris zone: No," alongside "Ground snow load (lb/ft2): 30" and "Seismic design category: C" as the city's completed table.
Roof layer limit / recover
Not separately amended by the City of Alamosa. The City adopts the 2015 IRC by reference (Alamosa Municipal Code § 4-21, 26 numbered modifications reviewed in full) and the modification list does not touch Section R907 (Reroofing) or R908 (Roof Replacement), so the base 2015 IRC roof-recover/layer-limit provisions govern as adopted; the section text itself is behind the ICC paywall and not restated here. Base-code rule, read at 2018 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. The record's adopted_code names the 2018 I-Codes while this field's own text names the 2015 IRC. That disagreement is recorded rather than resolved, and it does not reach this field: the 2015 and 2018 editions carry an identical Section R908.3.1.1, so the layer answer is the same under either reading.
Sales & use tax
7.9% combined (state 2.9% + Alamosa County 3% + City of Alamosa 2%). The City of Alamosa is a home rule city that contracts with the State of Colorado for sales tax collection and reporting — so sales tax is state-collected despite the home-rule charter. Use tax, however, is filed and paid directly to the City of Alamosa (self-administered) — this is the roofing-relevant mechanism, and the City's own page explicitly names "Retailer-contractor, when acting in the capacity of a seller of building supplies, construction materials" as a covered retailer type.

Local roofing hub

Roofing in Alamosa, ColoradoCity hub

Roof permits nearby: Alamosa County

Hooper, CORoof permit Alamosa 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 Alamosa, seat of Alamosa County in the San Luis Valley. Requires a permit for roofing and reroofing work, requires contractor licensing, and has adopted the 2018 I-Codes.

No NOAA hail reports within 10 miles of Alamosa, CO in the last 5 years (data through Oct 7, 2026).

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 Alamosa, 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 Alamosa, 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.

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Sources

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Roofing questions: Alamosa, CO

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

Yes, a permit is required to replace a roof in Alamosa, CO.

Is ice & water shield required in Alamosa, CO?

Yes. Alamosa's amended IRC Table R301.2(1) (Alamosa Municipal Code § 4-21(2)) lists "Ice barrier underlayment: Yes" as the city's completed determination.

Is drip edge required in Alamosa, CO?

Yes. Not separately amended by the City of Alamosa. The City adopts the 2015 IRC by reference (§ 4-21) and its 26 numbered modifications do not delete or modify Section R905.2.8.5, so the base IRC drip-edge requirement stands as adopted code.

Can you roof over an existing roof in Alamosa, CO?

Not separately amended by the City of Alamosa. The City adopts the 2015 IRC by reference (Alamosa Municipal Code § 4-21, 26 numbered modifications reviewed in full) and the modification list does not touch Section R907 (Reroofing) or R908 (Roof Replacement), so the base 2015 IRC roof-recover/layer-limit provisions govern as adopted; the section text itself is behind the ICC paywall and not restated here. Base-code rule, read at 2018 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. The record's adopted_code names the 2018 I-Codes while this field's own text names the 2015 IRC. That disagreement is recorded rather than resolved, and it does not reach this field: the 2015 and 2018 editions carry an identical Section R908.3.1.1, so the layer answer is the same under either reading.

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

Yes.

What building code does Alamosa, CO use?

The City of Alamosa has adopted the 2018 International Building Code, 2018 International Residential Code, 2018 International Mechanical Code, 2018 International Energy Conservation Code, 2018 International Fire Code, 2018 International Property Maintenance Code, and 2018 International Existing Building Code.