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Solar Photovoltaic (PV) Permit in Hamilton, Montana

Required for installation of rooftop or ground-mount solar photovoltaic systems within Hamilton city limits. Requires a Building Permit (structural/racking, required when roof modification is involved) plus an Electrical Permit -- Hamilton is a Montana DLI-certified jurisdiction for both Building and Electrical permitting, so both are issued locally by the City rather than the State. The City's own Electrical Permit Application carries a dedicated flat fee line for renewable energy systems.

Verified 2026-07-20 · Source

When you need this permit

  • Building Permit required for the structural/racking scope, particularly when roof modification is involved, per the City's Residential Building Permit Application
  • Electrical Permit required for the wiring/interconnection scope, governed by the 2020 NEC as adopted by the City
  • City of Hamilton's own Electrical Permit Application lists a dedicated 'Renewable energy system (PV, wind, hydro) -- commercial or residential' fee line, distinct from its general valuation-based and amperage-based fee tables
  • Governed by the City's adopted building and electrical codes; contact the Building Department to confirm current code editions in force

Required documents

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Fee schedule

Building Permit FeeNo valuation-based building permit fee table was found published on the City of Hamilton website, consistent with this corpus's existing residential-building-permit entry for Hamilton, which documents this same unresolved gap after exhausting the City's Building Department pages, the 2023 Residential Building Permit Application, and the 2021 Planning & Public Works Fee Schedule (none contain a Building Division valuation table). Contact the Building Department for a current quote.
Not published — contact the department
Renewable energy system (PV, wind, hydro) -- commercial or residentialCity of Hamilton Electrical Permit Application -- a dedicated flat fee line distinct from the general valuation-based and amperage-based electrical fee tables
$65
Permit Renewal FeeCity of Hamilton Electrical Permit Application
$60
Failure-to-permit investigation fee (per hour)City of Hamilton Electrical Permit Application
$45

Review timeline

Plan reviewTypical estimate — confirm current times with the Hamilton building department
~5–10 business days

How long did your Solar Photovoltaic (PV) Permit permit actually take in Hamilton?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Rough Electrical

    Conduit runs, wire sizing, and disconnect placement verified before energizing

  2. 2

    Final Inspection

    Racking/roof-penetration attachment, electrical connections, and interconnection point verified

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

Tips

  • Hamilton is one of the few Montana jurisdictions in this corpus with a dedicated solar/renewable-energy fee line ($65) on its own Electrical Permit Application, rather than billing solar under a generic valuation table -- ask for this line item by name when applying.
  • The City's building-permit valuation fee table itself is not published in any document found online as of this review -- get a written quote directly from the Building Department before budgeting.
  • Both the Building Permit and Electrical Permit for a solar installation are issued locally by the City (Hamilton is DLI-certified for both trades) -- you do not need to separately contact the State of Montana Building Codes Bureau, unlike in some neighboring Montana jurisdictions.

Frequently asked questions

Hamilton requires a solar photovoltaic (pv) permit for: Building Permit required for the structural/racking scope, particularly when roof modification is involved, per the City's Residential Building Permit Application; Electrical Permit required for the wiring/interconnection scope, governed by the 2020 NEC as adopted by the City; City of Hamilton's own Electrical Permit Application lists a dedicated 'Renewable energy system (PV, wind, hydro) -- commercial or residential' fee line, distinct from its general valuation-based and amperage-based fee tables; Governed by the City's adopted building and electrical codes; contact the Building Department to confirm current code editions in force. If your project isn't listed, confirm with City of Hamilton Building Department at (406) 363-3316 before starting work.

Plan review for a solar photovoltaic (pv) permit in Hamilton typically runs 5–10 business days. This is an estimate, not a published figure — confirm current review times with City of Hamilton Building Department at (406) 363-3316.

You'll need: Residential Building Permit Application; Electrical Permit Application. See the required-documents checklist on this page for details on each.

Hamilton requires 2 inspection(s) for a solar photovoltaic (pv) permit, in order: Rough Electrical, Final Inspection. Schedule each through City of Hamilton Building Department ((406) 363-3316).

Apply through City of Hamilton Building Department at 920 New York Ave, Hamilton, MT 59840. Phone: (406) 363-3316, email: dpwsec@cityofhamilton.net. Office hours: City Hall: 223 S. 2nd Street, Hamilton, MT 59840, main line (406) 363-2101. Building Department / Public Works office: 920 New York Ave, (406) 363-3316 or (406) 363-6717. Building Inspector Tim Netzley: (406) 880-5832, inspector@constructmt.com. Inspection scheduling line: (406) 552-3238. Inspections scheduled Monday & Wednesday 1pm-4pm and Fridays 8am-12pm per the Roof Permit Application; 24 hours' notice required for plumbing inspections per the Plumbing Permit Application.. Official information: https://www.cityofhamilton.net/departments/building_department/index.php.

Hamilton, Montana has adopted: Montana has a mandatory statewide building code administered by the Montana Department of Labor & Industry (DLI) Building Codes Bureau, amended by the Administrative Rules of Montana (ARM) Title 24, Chapter 301. Cities, counties, and towns may become 'certified' to locally administer permitting and inspection for all or part of the code; a certified local program's adopted code 'may include only codes adopted by the Building Codes Bureau' (ARM 24.301.202). Non-certified areas fall under direct state administration by the DLI Building Codes Bureau. Source: Montana DLI Building Codes Bureau, Certified City, County and Town Programs (bsd.dli.mt.gov/_docs/building-codes-permits/certified-city.pdf, updated 04/22/2026).; Hamilton is a Montana DLI-certified jurisdiction for Building (B), Plumbing (P), Mechanical (M), Electrical (E), and Swimming Pool (SP) — full-trade certification — within Hamilton city limits. Certified program contact on file with DLI: Tim Netzley, (406) 880-5832. Source: Montana DLI Building Codes Bureau, 'Certified City, County and Town Programs' roster (bsd.dli.mt.gov/_docs/building-codes-permits/certified-city.pdf, updated 04/22/2026), row 'Hamilton — B, P, M, E, SP — Tim Netzley — 880-5832 — City Limits'. Directly verified by fetching and OCR-extracting the PDF text during this research pass (2026-07-03).; 2021 International Building Code (IBC) — adopted by City of Hamilton per the Building Department's Adopted Codes list on the Residential Building Permit Application; 2021 International Residential Code (IRC) — adopted by City of Hamilton (referenced on the permit application as '2021 International Residential Building Code'); 2021 International Existing Building Code (IEBC) — adopted by City of Hamilton; 2021 International Mechanical Code (IMC) — adopted by City of Hamilton; 2021 International Fuel Gas Code (IFGC) — adopted by City of Hamilton; 2021 International Energy Conservation Code (IECC) — adopted by City of Hamilton; 2021 Uniform Plumbing Code (UPC) — adopted by City of Hamilton (Montana uses the Uniform Plumbing Code, not the International Plumbing Code); 2020 National Electrical Code (NEC) — adopted by City of Hamilton; 2021 International Swimming Pool and Spa Code (ISPSC) — adopted by City of Hamilton; consistent with Hamilton's DLI Swimming Pool (SP) certification; 2017 ICC A117.1 Accessibility — adopted by City of Hamilton; All codes listed verbatim on the City of Hamilton 2023 Residential Building Permit Application, page 2 ('All construction shall comply with the minimum requirements of the following codes'). Source: City of Hamilton Residential Building Permit Application (PDF).. Local amendments apply — see the Hamilton overview page for the full list.

Yes. The City of Hamilton's Electrical Permit Application lists a dedicated flat fee of $65 for a 'Renewable energy system (PV, wind, hydro) -- commercial or residential,' separate from its general valuation-based and amperage-based electrical fee tables.

The City of Hamilton issues both the Building Permit and the Electrical Permit locally, since Hamilton is a Montana DLI-certified jurisdiction for both trades -- unlike some neighboring Montana cities that route electrical work to the state.

Sources & verification

Verified against official sources. Last reviewed 2026-07-20.

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 Hamilton building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

Other permits in Hamilton

Residential Building Permit (New Construction / Addition / Remodel)Electrical PermitPlumbing PermitMechanical / HVAC PermitRoof PermitAccessory Dwelling Unit (ADU) / Detached Accessory Structure PermitFence PermitStructure Move PermitSwimming Pool / Spa PermitEV Charger / EVSE PermitSign PermitFire Sprinkler / Fire Alarm PermitChange of Use / Certificate of Occupancy

Solar Photovoltaic (PV) Permit in other cities

Anaconda-Deer Lodge, MontanaBelgrade, MontanaBillings, MontanaBozeman, MontanaButte-Silver Bow, MontanaChoteau, MontanaCity of Deer Lodge, MontanaColstrip, Montana

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