Helena, MT - 2026 Building Permit Guide

Permit Authority

City limits of Helena only. Helena is a certified local government under the Montana Building Codes Program and enforces Building, Plumbing, Electrical, and Mechanical codes independently.

Department

City of Helena Community Development Department, Building Division

Address

316 N. Park Avenue, Room 445, Helena, MT 59623

Phone

(406) 447-8490

Website

https://www.helenamt.gov/Departments/Community-Development/Building

Online Permit Portal

Application Process

1. Determine whether your project requires a building permit and/or a zoning permit (contact Building Division at 406-447-8490 if uncertain).
2. Obtain and complete the Building Permit Application (available via Civic Access or at the Community Development office).
3. For commercial projects, prepare and submit required plans and supporting documents. Residential projects may have reduced submittal requirements.
4. Submit the application and plans online through Civic Access or deliver in person to Room 445.
5. Pay applicable plan review fee at submission (35% of permit fee).
6. Await plan review. Staff will contact you with comments or approval. Average review time is approximately three weeks.
7. Respond in writing to any plan review comments until all items are resolved.
8. Pay the remaining building permit fee upon approval.
9. Permit is issued. Post the permit card at the job site as required.
10. Schedule required inspections through Civic Access or by calling the Building Division.
11. Receive final inspection approval and certificate of occupancy (if applicable).

Typical processing time: Approximately three weeks for plan review; simple residential projects may be faster.

Source: City of Helena Community Development Department, Building Division

General Requirements

Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure within Helena city limits must obtain the required permit before work begins. This includes new construction, additions, remodels, mechanical/electrical/plumbing work, demolition, and change of occupancy.

Required Documents

• Building Permit Application
• Site plan showing legal description, property address, zoning district, property boundary dimensions, distances to street curb and public walks, easements and encumbrances
• Location of all existing and proposed structures with distances to property boundaries
• Site topography with grade elevations
• Location of all site utilities and water/sewer service information
• Structural plans and specifications stamped by a Montana-licensed engineer
• Mechanical plans stamped by a Montana-licensed engineer (HVAC systems)
• Soils investigation report (if applicable)

Permit validity

Per adopted IBC 2021 provisions -- a permit becomes invalid if work is not commenced within 180 days of issuance, or if work is suspended or abandoned for 180 days after commencement. Written extensions of up to 180 days each may be granted upon written request showing justifiable cause.

Building code

2021 International Building Code (IBC), 2021 International Residential Code (IRC), 2021 International Mechanical Code (IMC), 2021 International Fuel Gas Code (IFGC), 2021 International Energy Conservation Code (IECC), 2021 International Fire Code (IFC), 2021 Uniform Plumbing Code (UPC), and 2020 National Electrical Code (NEC), all with Montana Administrative Rules amendments (ARM Title 24, Chapter 301) and Helena City Code Title 3 local amendments. Effective October 26, 2022.

Owner-builder

Not specifically detailed in public-facing materials; contact the Building Division at (406) 447-8490 to confirm owner-builder eligibility and requirements.

Contractor requirements

Montana requires Construction Contractor Registration (CR) for all construction businesses with employees, and for corporations and manager-managed LLCs even if the only employees are owners. Independent contractors without employees may obtain an Independent Contractor Exemption Certificate (ICEC) instead. Contact the Montana Department of Labor and Industry Employment Relations Division at (406) 444-7734.

Fees

Minimum permit fee

$23.50

Plan check fee

35% of the building permit fee, paid at time of plan submittal.

Permit fee formula

Valuation-based per IBC Section 109.2 fee table (per City Code Ordinance 3134, fees are based on the greater of Square Foot Valuation or Contract Dollar Amount): $1-$500: $23.50; $501-$2,000: $23.50 for first $500 + $3.05 per $100 or fraction thereof; $2,001-$25,000: $69.25 for first $2,000 + $14.00 per $1,000 or fraction thereof; $25,001-$50,000: $391.75 for first $25,000 + $10.10 per $1,000 or fraction thereof; $50,001-$100,000: $643.75 for first $50,000 + $7.00 per $1,000 or fraction thereof; $100,001-$500,000: $993.75 for first $100,000 + $5.60 per $1,000 or fraction thereof; $500,001-$1,000,000: $3,233.75 for first $500,000 + $4.75 per $1,000 or fraction thereof; $1,000,001 and up: $5,608.75 for first $1,000,000 + $3.15 per $1,000 or fraction thereof

Reinspection fee

Inspections outside normal business hours: $45/hour (minimum 2 hours); General inspections: $45/hour (minimum 0.5 hour); Additional plan review for revisions: $45/hour (minimum 0.5 hour); Requested inspections: $75/hour

Payment note

Fees may be paid through Civic Access online portal or in person at the Building Division office.

Fees change. Verify current amounts at the official fee schedule (effective November 2022).

Work That Does NOT Require a Permit

• Farm and ranch buildings
• Private residential buildings containing fewer than five dwelling units that do not serve transient guests (however, the City of Helena as a certified local government may still require local permits for residential work)
• Private garages and private storage buildings for the owner's personal use (non-commercial)
• Mining buildings on mine sites
• Petroleum refineries and pulp and paper mills (except office and shop buildings)
• Informational permits ($25 flat fee) may apply for minor work such as roof/siding replacement and window/door replacement without structural changes

Important: The City of Helena enforces its own local code, so state exemptions may not fully apply within city limits. Always verify with the Helena Building Division before assuming work is exempt.

Inspections

How to Schedule

• Civic Access portal (online)
• (406) 447-8490 or (406) 447-8438 (phone)

Inspection hours

Monday through Friday, 8:00 a.m. to 5:00 p.m.

Typical inspection sequence: Typical sequence: Footing/foundation; framing (rough-in); rough mechanical, plumbing, electrical; insulation; wallboard/drywall; final inspection. Specific required inspections are determined at permit issuance.

Additional Resources

• Building code: 2021 International Building Code (IBC), 2021 International Residential Code (IRC), 2021 International Mechanical Code (IMC), 2021 International Fuel Gas Code (IFGC), 2021 International Energy Conservation Code (IECC), 2021 International Fire Code (IFC), 2021 Uniform Plumbing Code (UPC), and 2020 National Electrical Code (NEC), all with Montana Administrative Rules amendments (ARM Title 24, Chapter 301) and Helena City Code Title 3 local amendments. Effective October 26, 2022.
• Verify contractor license: Montana Contractor Registration
• Zoning information: View zoning info
• Permits Issued (public reports)
• Codes and Design Requirements
• Permit Types
• Montana Building Codes Program (state)
• License lookup guide: Montana Contractor License Requirements
• Contract template: Montana Homeowner-Contractor Agreement
• Montana hub: Montana Contractor License & Permit Hub

Frequently Asked Questions

Helena Building Permit FAQ

Do I need a building permit in Helena, MT?

Any owner or authorized agent who intends to construct, enlarge, alter, repair, move, demolish, or change the occupancy of a building or structure within Helena city limits must obtain the required permit before work begins. This includes new construction, additions, remodels, mechanical/electrical/plumbing work, demolition, and change of occupancy.

How much does a building permit cost in Helena, MT?

The minimum permit fee is $23.50. Fees are calculated as: Valuation-based per IBC Section 109.2 fee table (per City Code Ordinance 3134, fees are based on the greater of Square Foot Valuation or Contract Dollar Amount): $1-$500: $23.50; $501-$2,000: $23.50 for first $500 + $3.05 per $100 or fraction thereof; $2,001-$25,000: $69.25 for first $2,000 + $14.00 per $1,000 or fraction thereof; $25,001-$50,000: $391.75 for first $25,000 + $10.10 per $1,000 or fraction thereof; $50,001-$100,000: $643.75 for first $50,000 + $7.00 per $1,000 or fraction thereof; $100,001-$500,000: $993.75 for first $100,000 + $5.60 per $1,000 or fraction thereof; $500,001-$1,000,000: $3,233.75 for first $500,000 + $4.75 per $1,000 or fraction thereof; $1,000,001 and up: $5,608.75 for first $1,000,000 + $3.15 per $1,000 or fraction thereof. Plan check fee: 35% of the building permit fee, paid at time of plan submittal..

How do I apply for a building permit in Helena, MT?

1. Determine whether your project requires a building permit and/or a zoning permit (contact Building Division at 406-447-8490 if uncertain). 2. Obtain and complete the Building Permit Application (available via Civic Access or at the Community Development office). 3. For commercial projects, prepare and submit required plans and supporting documents. Residential projects may have reduced submittal requirements. 4. Submit the application and plans online through Civic Access or deliver in person to Room 445. 5. Pay applicable plan review fee at submission (35% of permit fee). 6. Await plan review. Staff will contact you with comments or approval. Average review time is approximately three weeks. 7. Respond in writing to any plan review comments until all items are resolved. 8. Pay the remaining building permit fee upon approval. 9. Permit is issued. Post the permit card at the job site as required. 10. Schedule required inspections through Civic Access or by calling the Building Division. 11. Receive final inspection approval and certificate of occupancy (if applicable).

How long does it take to get a building permit in Helena, MT?

Typical processing time is Approximately three weeks for plan review; simple residential projects may be faster..

What work is exempt from building permits in Helena, MT?

The following work is generally exempt: Farm and ranch buildings; Private residential buildings containing fewer than five dwelling units that do not serve transient guests (however, the City of Helena as a certified local government may still require local permits for residential work); Private garages and private storage buildings for the owner's personal use (non-commercial); Mining buildings on mine sites; Petroleum refineries and pulp and paper mills (except office and shop buildings); Informational permits ($25 flat fee) may apply for minor work such as roof/siding replacement and window/door replacement without structural changes. Note: The City of Helena enforces its own local code, so state exemptions may not fully apply within city limits. Always verify with the Helena Building Division before assuming work is exempt.

How do I schedule a building inspection in Helena, MT?

Inspections can be scheduled via: Civic Access portal, (406) 447-8490 or (406) 447-8438.

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