Mechanical / HVAC Permit in Centennial, Colorado
VerifiedRequired for heating, ventilation, air conditioning, and related mechanical installations in Centennial, governed by the 2021 International Mechanical Code (IMC) and International Fuel Gas Code (IFGC) as currently adopted by the City.
Verified 2026-07-03 · Source
When you need this permit
- Mechanical permit required for installation or replacement of furnaces, AC units, water heaters, gas lines, and related HVAC equipment
- Governed by the 2021 IMC and IFGC as currently adopted by City of Centennial
- Like-for-like replacement of AC/furnace/water heater is classified as a One-Stop Permit (no plan review, 1 business day)
- Fee is valuation-based per the City's general Building Permit Fee Schedule; Centennial does not publish a separate itemized per-appliance mechanical fee table (unlike, e.g., Billings, MT)
- HVAC contractors must hold a City of Centennial HVAC (Heating, Warm Air & Ventilation) contractor license
Required documents
- Required
Mechanical Permit Application
Submitted online through the Centennial Self-Service Portal
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same schedule as new construction) | $23.50 minimum ($1-$500 valuation), scaling per the Building Permit Fee Schedule table | City of Centennial Building Permit Fee Schedule (PDF); no separate itemized per-appliance mechanical fee table was found published by the City as of this review |
Review timeline
1–1 business days
Centennial’s published plan-review target
Inspection process
- 1
Rough-In
Ductwork and mechanical equipment rough-in before walls closed; gas piping pressure test before concealment (not required for One-Stop like-for-like replacements)
- 2
Final
Equipment operational; combustion air and clearances verified
Tips
- AC new install/replacement, furnace, water heater, and gas line permits are all classified as One-Stop Permits requiring no plan review — issued in 1 business day, per the City's Building Permit Classifications and Review Schedule pages.
- Renewable energy (solar) mechanical/electrical tie-in work is reviewed in 5 business days for residential and commercial projects per the Building Permit Review Schedule.
Frequently asked questions
- How long does a furnace replacement permit take in Centennial?
- Furnace replacement is a One-Stop Permit classification (over-the-counter, no plan review) and is issued in 1 business day. Source: City of Centennial Building Permit Review Schedule.
Sources & verification
Verified against official sources. Last reviewed 2026-07-03.
- City of Centennial Building Division (Community Development Department) — official building department
- Building Permit Review Schedule | City of Centennial
- Building Permit Classifications | City of Centennial
- Building Permit Fee Schedule (PDF) | City of Centennial
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 Centennial building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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