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Furnace / Water Heater Replacement Permit in Lone Tree, Colorado

A narrower permit scope for like-for-like replacement of a residential furnace or water heater, explicitly named by the City as requiring a permit (distinct from the broader mechanical/HVAC permit type, which also covers new installations such as air conditioners). Billed under the same shared valuation-based Building/Mechanical/Electrical/Plumbing fee table; exempt from Douglas County Use Tax.

Verified 2026-07-06 · Source

When you need this permit

  • Explicitly named by the City ('new furnaces and water heaters') as permit-triggering work under Do I Need a Building Permit guidance
  • Governed by the 2021 IMC/IFGC as adopted
  • Douglas County Use Tax not collected on this permit type (examples explicitly listed: furnaces and water heaters)

Required documents

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Fee schedule

Permit Fee (same valuation-based schedule as Building/Mechanical/Electrical/Plumbing)2026 Building Division Fee Schedule
$23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule
Plan Review Fee2026 Building Division Fee Schedule, "Plan Review Fees" item 1, p. 13
65% of Permit Fee, minimum $100.00
Douglas County Use Tax
Not collected on furnace or water heater replacement permits

Review timeline

Plan review
Not published — contact the department

How long did your Furnace / Water Heater Replacement Permit 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

    Final Inspection

    Equipment installed and operational, venting/combustion air verified

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

Tips

  • This is one of the few permit types the City explicitly waives Douglas County Use Tax on — confirm with the Building Division that your specific replacement scope qualifies for the waiver before assuming it applies to a combined project (e.g., a furnace replacement bundled with ductwork changes).

Frequently asked questions

Yes. The City's Do I Need a Building Permit guidance explicitly names water heaters (along with new furnaces) as requiring a permit.

In Lone Tree, the published Permit Fee (same valuation-based schedule as Building/Mechanical/Electrical/Plumbing) is: $23.50 minimum, scaling per the valuation tiers in the 2026 Building Fees schedule. Additional published fees: Plan Review Fee — 65% of Permit Fee, minimum $100.00; Douglas County Use Tax — Not collected on furnace or water heater replacement permits. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

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 (Mechanical/Replacement scope). See the required-documents checklist on this page for details on each.

Lone Tree requires 1 inspection(s) for a furnace / water heater replacement permit, in order: Final 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: 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 Chapter 18 amendment text beyond this excerpt is hosted at library.municode.com/co/lone_tree; the base code-edition list is confirmed on the City's own actively-maintained Design Criteria & Codes page.; HB22-1362 statewide energy floor (Colorado): as of 2026-07-06, 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. 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.

Fee schedules

Department & other records

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.

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Furnace / Water Heater Replacement Permit in other cities

Ault, ColoradoBennett, ColoradoBerthoud, ColoradoBow Mar, ColoradoFort Lupton, ColoradoFrederick, ColoradoGarden City, ColoradoHudson, Colorado

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