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Mechanical / HVAC Permit in Lyons, Colorado

Required for heating, cooling, and ventilation equipment installation or replacement in Lyons, including furnace/air conditioner replacement. Governed by the 2021 International Mechanical Code (IMC) and 2021 International Fuel Gas Code (IFGC) as adopted.

Verified 2026-07-06 · Source

When you need this permit

  • Governed by the 2021 IMC and 2021 IFGC as locally adopted
  • Furnace/air conditioner replacement (each unit) billed under the Single-Unit Residential One Stop flat-fee schedule
  • Mechanical plans (equipment locations, duct size/locations/terminations) required as part of the combined building/electrical/mechanical plan submittal for new construction and additions

Required documents

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Fee schedule

Furnace/Air Conditioner Replacement (each unit)Single-Unit Residential One Stop Building Permit Fees, updated 6.16.25
$135
Water Heater Replacement
$135
Re-inspection Fee
$70
Building Permit Fee (valuation-based, for mechanical work bundled into new construction/remodel scopes)
$135 minimum, scaling per the general valuation-based fee schedule

Review timeline

Plan review
Not published — contact the department

How long did your Mechanical / HVAC Permit permit actually take in Lyons?

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

Inspection process

  1. 1

    Rough Mechanical

    Ductwork, flues, and equipment placement before concealment

  2. 2

    Final Inspection

    Equipment operational, combustion air and venting verified

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

Tips

  • A straight furnace/AC swap or water heater replacement is billed at Lyons' flat $135 'One Stop' fee, not the general valuation-based Building Permit Fee schedule — don't over-budget for a simple like-for-like equipment replacement.
  • New mechanical installations bundled into new construction or an addition instead fall under the general valuation-based fee schedule plus the 65% Plan Review Fee.

Frequently asked questions

Lyons requires a mechanical / hvac permit for: Governed by the 2021 IMC and 2021 IFGC as locally adopted; Furnace/air conditioner replacement (each unit) billed under the Single-Unit Residential One Stop flat-fee schedule; Mechanical plans (equipment locations, duct size/locations/terminations) required as part of the combined building/electrical/mechanical plan submittal for new construction and additions. If your project isn't listed, confirm with Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line) before starting work.

A flat $135 per unit under the Town's Single-Unit Residential One Stop Building Permit Fees, with a $70 re-inspection fee if needed.

Lyons does not publish a plan-review timeline for this permit. Contact Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line) for current turnaround.

You'll need: Building/Mechanical Permit Application. See the required-documents checklist on this page for details on each.

Lyons requires 2 inspection(s) for a mechanical / hvac permit, in order: Rough Mechanical, Final Inspection. Schedule each through Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) (303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line)).

Apply through Town of Lyons Planning and Building Department (permit processing, plan review, and inspections contracted to SAFEbuilt) at 432 5th Avenue, Lyons, CO 80540 (PO Box 49). Phone: 303-823-6622 ext. 25 (Town Planning and Building Director); 970-545-3512 (SAFEbuilt Permit Technician); 970-545-3555 (SAFEbuilt Chief Building Official); 303-774-0454 (Inspection Request Line), email: Lritchie@townoflyons.com (Lisa Ritchie, Planning and Building Director); dtoberman@safebuilt.com (Danielle Toberman, Permit Technician); tmoroney@safebuilt.com (Tim Moroney, Chief Building Official). Office hours: Monday-Thursday 8:00 a.m.-4:30 p.m.; Friday 8:00 a.m.-noon; closed holidays. Town of Lyons main line 303-823-6622.. Official information: https://www.lyonscolorado.com/834/Building-Department.

Lyons, Colorado has adopted: 2021 International Building Code (IBC) — currently in effect per the Town of Lyons Building Department page and the Town's published Adopted Codes flyer; 2021 International Residential Code (IRC); 2021 International Plumbing Code (IPC); 2021 International Mechanical Code (IMC); 2021 International Fuel Gas Code (IFGC); 2021 International Energy Conservation Code (IECC) — the Town's 2025 Residential Submittal Checklist explicitly requires '2021 IECC Energy Code compliance for the specific home being proposed' via REScheck or an Energy Compliance Report; 2021 International Fire Code (IFC); 2021 International Property Maintenance Code (IPMC); 2021 International Existing Building Code (IEBC); 2023 National Electrical Code (NEC); Transition note: the Town of Lyons Building Department page (fetched 2026-07-06) states the 2021 ICC series and 2023 NEC apply 'until July 1, 2026,' with a 2024 ICC series adopted to take effect July 1, 2026. As of this file's lastVerified date (2026-07-06, five days after that effective date), the Town's own Adopted Codes flyer (townoflyons.com/DocumentCenter/View/932/Lyons-Design-Criteria) and Building Department page still list the 2021 series/2023 NEC as the current codes with no updated flyer found reflecting the 2024 series live — recommend confirming directly with SAFEbuilt/the Building Department (970-545-3555) whether the 2024 ICC series has been operationally rolled out before finalizing a code analysis for any permit filed on or after 2026-07-01.; State of Colorado Wildfire Resiliency Code (Ordinance 1210) — effective July 1, 2026, adopted townwide for Class 1 and Class 2 requirements applicable to new commercial/residential construction and qualifying alterations to existing structures (roof replacement 25%+, exterior wall replacement 25%+, additions adding 500+ sq ft, and new/replacement fences or decks); per the Town of Lyons Wildfire Resiliency Code Requirements page.. Local amendments apply — see the Lyons 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 Lyons building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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