Mechanical / HVAC Permit — Anaconda-Deer Lodge, Montana · Requirements sheet
Verified 2026-07-02 · Source: https://bsd.dli.mt.gov/building-codes-permits/permit-applications/mechanical-permits/index
PermitBase is an independent reference and is not affiliated with any government agency. Requirements change and vary by project — confirm current details with the building department before you submit.
Mechanical / HVAC Permit in Anaconda-Deer Lodge, Montana
Required for heating, ventilation, air conditioning, and fuel-gas installations in Anaconda-Deer Lodge. Mechanical is NOT locally certified in Anaconda-Deer Lodge — it is issued and inspected DIRECTLY by the Montana Department of Labor & Industry, Building Codes Bureau, under the 2021 International Mechanical Code (IMC) and 2021 International Fuel Gas Code (IFGC), both effective June 11, 2022.
Verified 2026-07-02 · Source
When you need this permit
- A state mechanical permit is required for heating, ventilating, air-conditioning, restaurant kitchen hoods, and other mechanical systems on buildings to which state building permits are applicable and located outside cities/counties certified to issue their own mechanical permits — Deer Lodge County is not certified for mechanical
- Exemptions: farm and ranch buildings, mining buildings on mining property, petroleum refineries and pulp/paper mills (except offices/shops), residential buildings containing fewer than five dwelling units (except when serving transient guests), and private garages/storage buildings for the owner's own use
- Application for Mechanical Permit (BCP-1) submitted to the Building Codes Bureau with applicable fee(s), or applied for online at aca-prod.accela.com/bcb
- Mechanical permit holders must call for gas piping pressure tests, rough-in, and final inspections, giving 48 hours' notice before covering up work
- All work must meet the International Mechanical Code and International Fuel Gas Code as adopted by Montana
Required documents
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Fee schedule
Review timeline
Inspection process
- 1
Gas Piping Pressure Test
Required before concealing gas piping; 48 hours' notice required
- 2
Rough-In
Ductwork and mechanical equipment rough-in before walls closed
- 3
Final
Equipment operational, combustion air and venting verified
See the full Anaconda-Deer Lodge inspection guide — scheduling & re-inspection fees →
Tips
- Anaconda-Deer Lodge is NOT on Montana's certified-jurisdiction list for mechanical — every mechanical/HVAC permit there is a STATE permit issued by the Building Codes Bureau, not the county Building Inspector.
- Residential buildings with fewer than five dwelling units are exempt from the state mechanical permit requirement (except when serving transient guests) — confirm applicability of this exemption to your specific project with the Building Codes Bureau at (406) 841-2056.
- Apply online at https://aca-prod.accela.com/bcb/ or mail the paper application with payment to: Department of Labor & Industry, Building Codes Bureau, PO Box 200517, Helena, MT 59620-0517.
Frequently asked questions
Sources & verification
Verified against official sources. Last reviewed 2026-07-02.
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 Anaconda-Deer Lodge building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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