Hamilton building inspections

Verified

Inspection sequence, scheduling, and re-inspection fees for building permits in Hamilton, Montana.

Verified 2026-07-03 · Source

How to schedule

Inspections are requested through the building department below.

Address: 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.
Website: Official site

Published scheduling rules

Call the Building Inspection line, (406) 880-5832 (also listed as 406-552-3238 for scheduling), to schedule required inspections. (Residential Building Permit (New Construction / Addition / Remodel))
24 hours' notice required to schedule all plumbing inspections, at (406) 363-3316 (Plumbing Permit)

Inspection sequence

Applies to: Accessory Dwelling Unit (ADU) / Detached Accessory Structure Permit

1
Foundation/Footing
Before concrete pour for detached ADU foundations
2
Framing
Structural framing per approved plans
3
Final
Completed ADU verified against approved plans and zoning setback compliance

Applies to: Residential Building Permit (New Construction / Addition / Remodel)

1
Foundation/Footing
Before concrete pour — foundation plan, footing details, depth, embedded hardware and reinforcing steel per submitted plans
2
Framing
Structural framing per approved plans before walls are closed
3
Final
Completed work verified against approved plans; Building Official sign-off required before occupancy

Applies to: Electrical Permit

1
Rough-In
Wiring, box placement, and service connections before walls are closed
2
Final
Devices installed, panel labeled, protections verified per 2020 NEC

Applies to: EV Charger / EVSE Permit

1
Rough-In
Wiring and box placement before walls are closed, where applicable
2
Final
Charger circuit, disconnect, and breaker protections verified per 2020 NEC before energizing

Applies to: Mechanical / HVAC Permit

1
Rough-In
Ductwork, gas piping, and mechanical equipment rough-in before walls closed
2
Final
Equipment operational, clearances and venting verified

Applies to: Plumbing Permit

1
Rough-In
After pipes installed, before walls closed; requires 24 hours' notice to schedule
2
Final
All fixtures connected, water heater and venting verified, no leaks

Applies to: Solar Photovoltaic (PV) Permit

1
Rough Electrical
Conduit runs, wire sizing, and disconnect placement verified before energizing
2
Final Inspection
Racking/roof-penetration attachment, electrical connections, and interconnection point verified

Applies to: Swimming Pool / Spa Permit

1
Pre-Gunite/Pre-Backfill
Before pool shell concrete pour or backfill, per adopted ISPSC structural and barrier requirements
2
Final
Pool barrier/fencing, equipment bonding, and electrical safety verified per adopted ISPSC and NEC before use

Final inspection only: Roof Permit, Sign Permit

Re-inspection fees

Plumbing PermitRe-inspection fee · City of Hamilton Plumbing Permit Application, Note 2

$45 (or the original permit fee if that amount does not exceed $30)

Plumbing PermitPer-fixture/per-item fees (fixture/trap, water service, sewer, storm drain, water heater new/replacement, backflow devices, sprinkler systems, etc.) · The Plumbing Permit Application includes an itemized 'Schedule of Plumbing Fixtures' (Quantity x Cost = Total) covering each fixture/trap, water service, sewer fee, storm drain, water heater, treatment equipment, and sprinkler/backflow items, but the per-item dollar rates are entered on a fillable form field that did not carry a printed rate in the extracted document — only the line-item names extracted, not the associated dollar figures. Chase trail: fetched the PDF directly (Amended Schedule of Plumbing Permit Fees effective 1/1/2015) via curl and extracted text with pypdf; the rate column did not resolve to visible text (likely a form-fill table or scanned rate column not captured by the text layer). Left null rather than inventing a plausible per-fixture rate; confidence for this specific line-item pricing is unverified. The $75 inspection fee and $45 re-inspection fee (Notes 1-2) ARE printed as plain text and are verified above.

Not published — contact the department

Sources & verification

Verified against official sources. Last reviewed 2026-07-03.

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.

Hamilton building permits

Hamilton building permits Accessory Dwelling Unit (ADU) / Detached Accessory Structure Permit Residential Building Permit (New Construction / Addition / Remodel)Electrical Permit EV Charger / EVSE Permit Mechanical / HVAC Permit Plumbing Permit Solar Photovoltaic (PV) Permit Swimming Pool / Spa Permit Roof Permit Sign Permit

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