📋 Quick Facts — Generator Permit in Aurora
| Detail | Info |
|---|---|
| Permit Required? | Yes — in most cases |
| Permit Type | Electrical + Mechanical Permit |
| Permit Office | City of Aurora Building Division |
| Phone | (303) 739-7420 |
| Hours | Mon–Fri 8am–5pm |
| Online Portal | Apply Online |
| Fee / Timeline | Current Data |
|---|---|
| Generator Permit Fee | Same cost structure. Panel: $150–$350 estimated. |
| Approval Time | 1–3 business days |
| NEC Edition (CO) | 2023 |
| Permit Authority | Denver and state buildings only. Other jurisdictions have 'home rule' — each cit |
Do I Need a Generator Permit in Aurora?
The short answer: almost always yes. REQUIRED for standby (permanently installed) generators in virtually all jurisdictions — and Aurora is no exception. The City of Aurora Building Division enforces electrical + mechanical permit requirements for residential and commercial work.
✅ Work That Always Requires a Permit
- Standby generator permanently connected to home electrical system
- Transfer switch installation (manual or automatic)
- New gas line to generator (if gas-powered)
💰 Generator Permit Fees in Aurora (2026)
Permit fees in Aurora are set by City of Aurora Building Division. Here's the current fee structure for generator work:
| Fee Item | Amount |
|---|---|
| Generator Permit | Same cost structure. Panel: $150–$350 estimated. |
VERIFIED: Aurora uses permit fees + plan review + applicable taxes (auroragov.org). Fee calculator: auroragov.org/business_services/building_division/permit_fee_calculator. Aurora requires separate mechanical contractor licensing through city building dept.
* Fees may change. Always verify current rates with City of Aurora Building Division at https://www.auroragov.org/business_services/building_division.
🔍 Inspection Requirements
After the permit is issued, Aurora requires inspections at key stages. Do not cover work before it's inspected.
- Gas Line Rough-in: Gas line sizing, pressure test, proper flex connector to generator.
- Electrical Rough-in: Transfer switch installation, connection to panel, wiring to generator.
- Final Inspection: Full operational test, ATS functionality, proper setback from windows/doors (typically 5 feet min), exhaust direction away from openings, proper grounding.
📝 How to Apply for a Generator Permit in Aurora
- Verify your contractor is licensed — Licensed Electrician for electrical permit. Licensed Gas Plumber or Mechanical Contractor for gas line. General or specialty contractor for concrete pad installation..
- Gather required documents — Equipment specs, site plan, load calculations where applicable.
- Submit the application — Online at City of Aurora Building Division or in person.
- Pay the permit fee — Same cost structure. Panel: $150–$350 estimated..
- Post the permit — Keep a copy on-site until all inspections pass.
- Schedule inspections — Do not cover work until the inspector signs off.
📌 Colorado State Requirements
In addition to Aurora's local rules, these state-level requirements apply:
- Denver has its own permit system — Denver Community Planning and Development
- Colorado Springs, Fort Collins, Boulder all have own permit offices
- Mountain towns (Aspen, Vail) — very strict, slow permit process, high fees
- Front Range: Class 4 hail-resistant roofing common due to insurance requirements
🚫 Common Generator Permit Mistakes in Aurora
- Installing generator too close to windows or HVAC return air intake — carbon monoxide hazard and code violation
- Transfer switch work without permit — major code violation
- Not sizing gas line for combined BTU load (if other gas appliances on same line)
- Skipping the concrete pad requirement — some jurisdictions require permanent pad for standby units
💡 Pro Tips from Contractors
- Get the electrical AND gas permits at the same time — saves a second trip to the building department
- Confirm setback distance from windows and doors before ordering — some HOAs and cities are stricter than code minimum
- Size the gas line for peak BTU load including all other gas appliances on the same line
- In CA/SoCal: check CARB compliance before ordering the generator unit — some models are not permitted in certain air districts
Notes specific to Aurora:
- Use online fee calculator: auroragov.org permit fee calculator
- Aurora requires mechanical contractor licensing (city-level)
- Spans 3 counties — one city permit office
- Colorado HVAC licensing required
Get Your Exact Generator Permit Requirements in 5 Seconds
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Run a Free Permit Check →❓ Frequently Asked Questions
Do I need a generator permit in Aurora, CO?
Yes, in most cases. REQUIRED for standby (permanently installed) generators in virtually all jurisdictions. In Aurora, contact City of Aurora Building Division at https://www.auroragov.org/business_services/building_division.
How much does a generator permit cost in Aurora?
In Aurora: Same cost structure. Panel: $150–$350 estimated.. Fees may change — always confirm with City of Aurora Building Division before applying.
How long does a generator permit take in Aurora?
1–3 business days. Simple residential trade work is often issued same-day or within 1–3 business days.
Who can pull a generator permit in Colorado?
Licensed Electrician for electrical permit. Licensed Gas Plumber or Mechanical Contractor for gas line. General or specialty contractor for concrete pad installation.