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Roofing Permit (Re-Roof) in Lone Tree, Colorado

Required when replacing more than 1 square (100 sq ft) of roofing in Lone Tree. Governed by the 2021 IRC/IBC as adopted; notably, ice and water (ice barrier) underlayment is explicitly NOT required by the City, unlike many mountain-corridor Colorado jurisdictions.

Verified 2026-07-06 · Source

When you need this permit

  • Required whenever replacing more than 1 square (100 sq ft) of roofing
  • Partial roof replacements must terminate at a natural break (valley, eave, ridge) and may not mix materials or ages on a single slope unless manufacturer-warranted
  • Minimum Class C rating required for wood shake and wood shingle roofing
  • Wind clips required for concrete tile and clay tile installations
  • Drip edge mandatory on all rakes and eaves
  • All deteriorated flashing, drain outlets, jacks, and collars must be replaced; water-damaged or rusted decking must be replaced
  • Design standards: 115 mph wind speed (Exposure C); 30 psf ground snow load; 3.0 in/hr rainfall design for 100-year events
  • Ice and water (ice barrier) underlayment is explicitly NOT required by the City
  • A roof replacement/repair of 25% or more triggers Colorado Wildfire Resiliency Code mitigation if the parcel is in a mapped fire-intensity zone

Required documents

Check off what you have — your progress is saved on this device.

Not ready yet0 of 2 required documents checked.

This checker covers one permit. A full project usually triggers several — our paid checklist will assemble all of them, from $29

Fee schedule

Building Permit Fee (valuation-based, same shared schedule as new construction)No separate flat re-roof fee is published; billed under the general valuation-based fee schedule
$23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule
Plan Review Fee
65% of Permit Fee, minimum $100.00

Review timeline

Plan review
Not published — contact the department

How long did your Roofing Permit (Re-Roof) permit actually take in Lone Tree?

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

Inspection process

  1. 1

    Mid-Roof Inspection

    Required for all roof types when 20-50% of roofing is installed

  2. 2

    Final Roof Inspection

    Required for all roofing materials; no ladder needed unless flagged at mid-roof stage

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

Tips

  • Lone Tree explicitly does NOT require ice and water (ice barrier) underlayment — a notable contrast to mountain-corridor Colorado home-rule jurisdictions in this corpus (e.g. Vail's 100% ice barrier requirement); confirm your roofer isn't pricing an unnecessary product for this jurisdiction.
  • Roof replacement/repair of 25% or more can trigger Colorado Wildfire Resiliency Code mitigation review — check your parcel's fire-intensity classification on the City's Interactive Zoning Map before committing to a partial vs. full replacement scope.
  • Permits inactive for 6+ months are considered abandoned and voided — don't let a roofing permit sit dormant across a season change.

Frequently asked questions

No. The City's Roofing Guidelines explicitly state that ice and water barriers are not required, unlike many mountain-region Colorado jurisdictions.

A permit is required whenever more than 1 square (100 square feet) of roofing is being replaced.

Lone Tree does not publish a plan-review timeline for this permit. Contact City of Lone Tree Community Development Department, Building Division at 720-390-5211 for current turnaround.

You'll need: Building Permit Application (Roofing scope); Roofing Material Schedule. See the required-documents checklist on this page for details on each.

Lone Tree requires 2 inspection(s) for a roofing permit (re-roof), in order: Mid-Roof Inspection, Final Roof Inspection. Schedule each through City of Lone Tree Community Development Department, Building Division (720-390-5211).

Apply through City of Lone Tree Community Development Department, Building Division at 9220 Kimmer Dr., Suite 100, Lone Tree, CO 80124. Phone: 720-390-5211, email: building@cityoflonetree.com. Office hours: 7:00 AM - 4:00 PM, Monday-Friday, excluding holidays/weekends. Chief Building Official: Matt Archer. Community Development Director: Kelly First (kelly.first@cityoflonetree.com, 720-509-1274). General city line: 303-708-1818.. Official information: https://cityoflonetree.com/community-development/building/.

Lone Tree, Colorado has adopted: 2021 International Building Code (IBC), as amended — City of Lone Tree Design Criteria & Codes page; 2021 International Residential Code (IRC), as amended; 2021 International Fire Code (IFC); 2021 International Plumbing Code (IPC); 2021 International Mechanical Code (IMC); 2021 International Fuel Gas Code (IFGC); 2021 International Energy Conservation Code (IECC); 2023 National Electrical Code (NEC); 2017 ICC A117.1 Accessibility Code; Note on Chapter 18 (Building Regulations), Lone Tree Municipal Code: search-indexed content confirms the City has adopted the International Building Code, 2021 Edition, as amended, with a certified copy on file with the City Clerk; a local amendment adds Section 105.3.8 'Soils Test,' requiring a soils test prepared by a Colorado-registered professional engineer at building permit application, with an engineering geologist additionally required for hillside/geological-hazard/steep-slope sites at the Building Official's discretion. Full text of Chapter 18 could not be independently re-verified beyond this indexed excerpt because library.municode.com/co/lone_tree serves an Angular single-page app shell (empty of code text without JS rendering) and returned HTTP 403 to both a standard fetch and a full-browser-header curl retry — this is a partial-confidence caveat on the amendment-detail level only, not on the base code-edition list, which is independently confirmed on the City's own actively-maintained Design Criteria & Codes page.; HB22-1362 statewide energy floor (Colorado): as of 2026-07-06 (this review date), HB22-1362 requires that municipalities/counties updating their building code adopt an energy code achieving equivalent-or-better performance than the 2021 IECC + Model Electric and Solar Ready Code (effective window 7/1/2023-6/30/2026), stepping up to the Colorado Energy Code Board's Model Low Energy and Carbon Code (published 9/2/2025) as the new statewide minimum for any code update on or after 7/1/2026. Lone Tree's currently-published adopted energy code is the 2021 IECC (per its own Design Criteria & Codes page, most recent update not dated on-page) — this predates the 7/1/2026 Model Low Energy and Carbon Code trigger point and does not itself violate HB22-1362, since that stricter floor applies only when a jurisdiction next updates its code. Flagged honestly rather than assumed; confirm current status with the Building Division (720-390-5211) before relying on this for a 2026-cycle project, since Lone Tree could adopt updated codes at any time.. Local amendments apply — see the Lone Tree overview page for the full list.

Sources & verification

Verified against official sources. Last reviewed 2026-07-06.

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 Lone Tree building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.