Mechanical / HVAC Permit in Green River, Wyoming
VerifiedRequired for heating, ventilating, cooling, refrigeration, and other mechanical equipment installations in Green River. Governed by the 2024 International Mechanical Code (IMC), adopted by Code of Ordinances Sec. 7-46, and the 2024 International Fuel Gas Code (IFGC) for gas piping, adopted by Sec. 7-91.
Verified 2026-07-01 · Source
When you need this permit
- All heating, ventilating, cooling, refrigeration systems, incinerators, and other heat-producing appliances must be installed, repaired, and maintained per the 2024 IMC
- Gas piping systems governed by the 2024 IFGC (Sec. 7-91)
- Furnace/water heater replacement requires a permit (no site plan required)
- Portable heating/cooling/ventilation appliances and certain minor part replacements are exempt from permit per the adopted code's Section 105.2 exemptions
Required documents
- Req
Building Permit Application (DocumentCenter Doc #5572)
Mechanical and Gas subcontractor lines are listed on the same application form
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical/Fuel Gas Permit — charged under the general valuation-based Building Permit fee schedule | No separate flat mechanical permit fee is published; charged via the same valuation table as the Building Permit (residential work at 50%; commercial/multi-family at 100%) | City of Green River Development Services Fees schedule (effective July 1, 2018) covers Mechanical permits under the same general valuation table as Building/Plumbing/Electrical — a verified general-valuation-table fact. |
Review timeline
~1–14 business days
Typical estimate — confirm current times with the Green River building department
Inspection process
- 1
Rough-In / Equipment
Equipment and ductwork installed before walls closed
- 2
Final
Equipment operational, venting and combustion air verified
Tips
- Green River's high elevation (6,132 ft) and cold winter design temperature (-20°F) mean HVAC equipment sizing (Manual J) should reference the city's specific Manual J design criteria published in the IRC amendment (winter heating -6°F, altitude correction factor 0.84).
Frequently asked questions
- Do I need a permit to replace a furnace in Green River?
- Yes, a permit is required for furnace/water heater replacement, though no site plan is needed for this scope of work.
Sources & verification
Verified against official sources. Last reviewed 2026-07-01.
- City of Green River Development Services — Building Inspection Division — official building department
- Green River Code of Ordinances Sec. 7-46 — 2024 International Mechanical Code adopted (Municode, current through Ord. 25-02)
- City of Green River Development Services Fees (effective July 1, 2018)
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 Green River building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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