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Swimming Pool / Spa Permit in Hamilton, Montana

Required for installation of swimming pools and spas in Hamilton, governed by the adopted 2021 International Swimming Pool and Spa Code (ISPSC). Hamilton is a Montana DLI-certified jurisdiction for Swimming Pool (SP) permitting — one of only a subset of Montana municipalities with this certification. No dedicated standalone pool-permit application form or pool-specific fee line was found published separately from the general Building Permit process; pools are permitted through the standard Residential/Commercial Building Permit application referencing the adopted ISPSC.

Verified 2026-07-03 · Source

When you need this permit

  • Swimming pool/spa construction governed by the 2021 International Swimming Pool and Spa Code (ISPSC) as adopted by City of Hamilton
  • Permitted through the standard Residential or Commercial Building Permit application (no separate pool-specific application form was found published)
  • Electrical permit required for pool equipment bonding/wiring per 2020 NEC; plumbing permit required for pool piping/drainage connections

Required documents

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Fee schedule

Building Permit Fee (pool/spa construction)
Chase trail: reviewed the Building Department's full Permits & Applications and Building Permits document listings (12 + 8 documents respectively, enumerated directly from page HTML) — no separate… Show full citationChase trail: reviewed the Building Department's full Permits & Applications and Building Permits document listings (12 + 8 documents respectively, enumerated directly from page HTML) — no separate 'Pool Permit' or 'Swimming Pool Permit' application or fee line exists. The City's DLI Swimming Pool (SP) certification and adoption of the 2021 ISPSC are directly confirmed (see codesAdopted), but a pool-specific fee schedule was not found published; the general Building Permit fee table is also unpublished (see Residential Building Permit entry). Left null rather than inventing a figure.
Not published — contact the department

Review timeline

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

How long did your Swimming Pool / Spa 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

    Pre-Gunite/Pre-Backfill

    Before pool shell concrete pour or backfill, per adopted ISPSC structural and barrier requirements

  2. 2

    Final

    Pool barrier/fencing, equipment bonding, and electrical safety verified per adopted ISPSC and NEC before use

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

Tips

  • Hamilton's Swimming Pool (SP) DLI certification means pool permits are issued and inspected locally by the City, not routed to the state DLI Building Codes Bureau — per the DLI's 'Certified City, County and Town Programs' roster (updated 04/22/2026).
  • No dedicated pool-permit application or fee schedule was found separate from the general Building Permit process — applicants should contact the Building Department directly at (406) 363-3316 to confirm current pool-specific submittal requirements.

Frequently asked questions

Hamilton requires a swimming pool / spa permit for: Swimming pool/spa construction governed by the 2021 International Swimming Pool and Spa Code (ISPSC) as adopted by City of Hamilton; Permitted through the standard Residential or Commercial Building Permit application (no separate pool-specific application form was found published); Electrical permit required for pool equipment bonding/wiring per 2020 NEC; plumbing permit required for pool piping/drainage connections. If your project isn't listed, confirm with City of Hamilton Building Department at (406) 363-3316 before starting work.

Plan review for a swimming pool / spa permit in Hamilton typically runs 10–10 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 or Commercial Building Permit Application. See the required-documents checklist on this page for details on each.

Hamilton requires 2 inspection(s) for a swimming pool / spa permit, in order: Pre-Gunite/Pre-Backfill, Final. 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".; 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.

Hamilton holds full Montana DLI Swimming Pool (SP) certification alongside Building, Plumbing, Mechanical, and Electrical, per the DLI's Certified City, County and Town Programs roster (updated 2026-04-22). Pool permits are issued and inspected locally by the City of Hamilton Building Department, not by the state DLI Building Codes Bureau.

Sources & verification

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

Applications & forms

Department & other records

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.

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Swimming Pool / Spa Permit in other cities

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