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Roofing Permit (Reroof) in Longmont, Colorado

Required for roof replacement and repair in Longmont. Governed by the City's Roofing Guidelines for Commercial and Residential Projects, the 2021 IBC/IECC (commercial), and the 'one square' rule requiring full roof replacement once repair exceeds 100 sq ft.

Verified 2026-07-01 · Source

When you need this permit

  • '1 Square' rule (in effect since 2012): if more than 100 sq ft (one roofing square) requires repair/replacement, the ENTIRE roof must be replaced, not just the affected plane
  • Overlay (roofing over an existing layer) is NOT allowed — tear-off required
  • Drip edge required at both eaves and rakes
  • All roofing must carry a sustained wind warranty of 110 mph minimum; 3-tab shingles not allowed unless laminated
  • Residential: homeowner may pull a roof permit without a contractor's license, provided the house is their primary residence and no contractor performs the work Owner-builderContractor
  • Commercial (including apartments/condos): requires a Class D-2 licensee (no additional test required for this class); must comply with the 2021 IBC and IECC, minimum R-30 insulation above deck
  • Mid-roof inspection required on built-up commercial roofs before dry-in and when above-deck insulation or sheathing is installed; ladder must be sound, secured, and extend safely above the eave

Required documents

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Fee schedule

Roofing Permit — valuation/contract-based (Primary Fee Schedule)City of Longmont FY2026 Planning & Development Services Fee Manual (effective 3/24/2026), 'Other Permits — Residential/Commercial' table + footnote (PDF p.17-18): re-roofing is not one of the itemized flat-fee line items, so it falls under the manual's express catch-all — 'Fees for plumbing permits, mechanical permits, electrical permits, and other miscellaneous permits and commercial work not listed above shall be based on actual contract amount of the work from the primary fee table.' The Primary Fee Table itself (Building Permit Fees Overview, PDF p.6) is a published valuation/contract-amount schedule, making this a grounded, citable fee rather than an unpublished figure.
Assessed on the actual contract amount of the roofing work, applied against the Primary Fee Schedule's valuation-based Building Permit Fee table (from $27.00 minimum up to $6,448.55 + $4.20 per additional $1,000 over $1,000,000)
Plan Review FeeFY2026 Fee Manual, Plan Review Fees table — same residential plan review rate applied to other valuation-based permits (e.g. new construction, additions/remodels)
50% of the Building Permit Fee

Review timeline

Plan reviewTypical estimate — confirm current times with the Longmont building department
~0–0 business days

How long did your Roofing Permit (Reroof) permit actually take in Longmont?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Mid-Roof (commercial built-up roofs only)

    Required before dry-in and when above-deck insulation or roof sheathing is installed

  2. 2

    Final

    Completed roof — verify flashing, drip edge, underlayment, installation quality

See the full Longmont inspection guide — scheduling & re-inspection fees →

Tips

  • Longmont's 'one square' rule is stricter than many jurisdictions' partial-reroof allowances — more than 100 sq ft of repair triggers a full roof replacement requirement, not just the damaged section.
  • No overlay is allowed in Longmont — every reroof is a tear-off down to the deck.
  • Residential homeowners can self-permit a reroof on their own primary residence without hiring a licensed contractor, but the 110 mph wind-warranty and no-overlay rules still apply. Contractor

Frequently asked questions

Longmont requires a roofing permit (reroof) for: '1 Square' rule (in effect since 2012): if more than 100 sq ft (one roofing square) requires repair/replacement, the ENTIRE roof must be replaced, not just the affected plane; Overlay (roofing over an existing layer) is NOT allowed — tear-off required; Drip edge required at both eaves and rakes; All roofing must carry a sustained wind warranty of 110 mph minimum; 3-tab shingles not allowed unless laminated; Residential: homeowner may pull a roof permit without a contractor's license, provided the house is their primary residence and no contractor performs the work; Commercial (including apartments/condos): requires a Class D-2 licensee (no additional test required for this class); must comply with the 2021 IBC and IECC, minimum R-30 insulation above deck; Mid-roof inspection required on built-up commercial roofs before dry-in and when above-deck insulation or sheathing is installed; ladder must be sound, secured, and extend safely above the eave. If your project isn't listed, confirm with City of Longmont — Building Services (Building Inspection Division), Development Services Center at (303) 651-8332 before starting work.

In Longmont, the published Roofing Permit — valuation/contract-based (Primary Fee Schedule) is: Assessed on the actual contract amount of the roofing work, applied against the Primary Fee Schedule's valuation-based Building Permit Fee table (from $27.00 minimum up to $6,448.55 + $4.20 per additional $1,000 over $1,000,000). Additional published fees: Plan Review Fee — 50% of the Building Permit Fee. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Plan review for a roofing permit (reroof) in Longmont typically runs 0–0 business days. This is an estimate, not a published figure — confirm current review times with City of Longmont — Building Services (Building Inspection Division), Development Services Center at (303) 651-8332.

You'll need: Roofing Permit Application (via ACA portal). Depending on your project, Longmont may also ask for: Roofing Guidelines for Commercial and Residential Projects. See the required-documents checklist on this page for details on each.

Longmont requires 2 inspection(s) for a roofing permit (reroof), in order: Mid-Roof (commercial built-up roofs only), Final. Schedule each through City of Longmont — Building Services (Building Inspection Division), Development Services Center ((303) 651-8332).

Apply through City of Longmont — Building Services (Building Inspection Division), Development Services Center at 385 Kimbark St., Longmont, CO 80501. Phone: (303) 651-8332, email: building.inspection@longmontcolorado.gov. Office hours: Mon–Fri, 8 a.m.–5 p.m. (closed Federal holidays, Veterans Day, and the day after Thanksgiving; Building Inspection closed 10–11 a.m. on the 2nd and 4th Thursday for staff training). Official information: https://longmontcolorado.gov/building-inspection/permits/.

No. Overlay is not allowed over an existing roof in Longmont — a full tear-off is required per the City's Roofing Guidelines for Commercial and Residential Projects.

If more than 100 square feet (one roofing square) requires repair or replacement, City of Longmont's 'one square' rule (in effect since 2012) requires replacing the entire roof, not just the damaged area or plane.

Sources & verification

Verified against official sources. Last reviewed 2026-07-01.

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Longmont building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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Roofing Permit (Reroof) in other cities

Alamosa, ColoradoArvada, ColoradoAspen, ColoradoAurora, ColoradoAvon, ColoradoBasalt, ColoradoBlue River, ColoradoBoulder, Colorado

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