Plumbing Permit in Helena, Montana
VerifiedRequired for installation, removal, alteration, or repair of plumbing, water and sewer service lines, gas lines, and drainage systems within Helena city limits. The City of Helena is DLI-certified to enforce plumbing code within city limits under the 2021 Uniform Plumbing Code (UPC) as adopted statewide by Montana.
Verified 2026-07-02 · Source
When you need this permit
- Plumbing permits must be obtained by a State of Montana licensed Plumber
- Homeowner exemption: a homeowner performing their own interior plumbing in their own owner-occupied residence (not built on speculation or intended as a rental) does not need a permit — unless they want Building Division inspection, in which case a permit is required to cover inspection costs
- Exempt from permit: stopping leaks in drains/pipes (unless replacement of concealed piping is required, which then requires a permit), clearing stoppages, repairing leaks not requiring pipe/fixture replacement or rearrangement, removal/reinstallation of water closets without repiping
- Governed by the 2021 Uniform Plumbing Code (UPC) as adopted statewide by Montana effective June 11, 2022
Required documents
- Required
Plumbing Permit Application (City of Helena Building Division)
Email application to the Building Division; itemizes plumbing permit fees and water/sewer permit fees directly on the application form
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Plumbing Permit — issuance fee (each permit) | $21.00 | City of Helena Plumbing Permit Application (fee schedule printed directly on the application form) |
| Plumbing Permit — each plumbing fixture (sinks, tub/showers, toilets/urinals/bidets, dishwasher, washing machine, wall hydrant, commercial ice maker, grease trap) | $8.50 each | City of Helena Plumbing Permit Application fee schedule |
| Plumbing Permit — each water heater | $8.50 | City of Helena Plumbing Permit Application fee schedule |
| Plumbing Permit — gas piping, 1 to 4 outlets | $8.50 | City of Helena Plumbing Permit Application fee schedule |
| Plumbing Permit — gas piping, 5 outlets or more | $3.00 per outlet | City of Helena Plumbing Permit Application fee schedule |
| Plumbing Permit — installation, alteration, or repair of water piping and/or water treatment equipment | $8.50 | City of Helena Plumbing Permit Application fee schedule |
| Water and Sewer Permit — Water and Sewer Inspection (both) | $43.50 | City of Helena Plumbing Permit Application — Water and Sewer Permit Fees section |
| Water and Sewer Permit — Water Only Inspection | $29.50 | City of Helena Plumbing Permit Application — Water and Sewer Permit Fees section |
| Water and Sewer Permit — Sewer Only Inspection | $35.00 | City of Helena Plumbing Permit Application — Water and Sewer Permit Fees section |
Review timeline
~1–5 business days
Typical estimate — confirm current times with the Helena building department
Inspection process
- 1
Underground / Under-slab
Before concrete pour — pipe slope, materials, cleanouts
- 2
Rough-In
After pipes installed, before walls closed
- 3
Final
All fixtures connected, no leaks, proper venting verified
Tips
- Helena's plumbing fee schedule is a per-item schedule (issuance fee + per-fixture + per-water-heater + per-gas-outlet), not a valuation-based table like the building permit fee.
- A homeowner doing their own interior plumbing in their own owner-occupied (non-rental, non-spec) home can skip the permit entirely — but only if they don't want the work inspected.
- Water and Sewer tapping permits can only be purchased by a Montana Licensed Master Plumber, separate from the standard plumbing fixture permit.
Frequently asked questions
- Do I need a plumbing permit to do my own plumbing work in Helena?
- Not necessarily. A homeowner does not need a plumbing permit for interior plumbing work they perform themselves in their own owner-occupied residence, provided it is not built on speculation of resale or intended as a rental. If you want the Building Division to inspect the work, a permit is still required to cover inspection costs.
Sources & verification
Verified against official sources. Last reviewed 2026-07-02.
- City of Helena — Community Development Department, Building Division — official building department
- City of Helena — Building Permit Types (Plumbing section)
- City of Helena — Plumbing Permit Application (PDF, includes itemized fee schedule)
- Montana DLI Building Codes Program — Certified City, County and Town Programs (Helena: B, P, E, M certified)
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 Helena building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.
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