How much does a building permit cost in Big Timber, MT?

Fees are calculated as: State Building Permit: 1–2% of total project valuation; Local Land Use/Zoning Permit: Not specified in available documentation – contact City Planning Office at (406) 932-5470.

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

1. Contact City Planning Office at (406) 932-5470 to verify zoning compliance, setbacks, and land use permit requirements for location 2. Obtain building zoning permit from City Planning if required by Big Timber Zoning Ordinance (Title 11) 3. Prepare construction documents per Montana/International Building Code requirements: site plans with property boundaries, architectural/engineering drawings, electrical, mechanical, plumbing plans, building valuation estimate 4. Submit state building permit application via EBIZ.MT.GOV with Building Permit/Plan Review Application, complete construction plans, professional seals (if required), and proof of local zoning compliance 5. Plan review by Montana Building Codes Bureau (2–3 weeks average if complete) 6. Receive state building permit 7. Schedule inspections with state or designated inspector for foundation, framing, electrical, plumbing, mechanical, final 8. Coordinate final sign-off with city and state before occupancy

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

Typical processing time is 2–3 weeks for plan review if complete.

What work is exempt from building permits in Big Timber, MT?

The following work is generally exempt: Farm or ranch buildings (not intended for human occupancy); Private storage buildings and garages; Sheds under 200 sq ft, 12 ft max height, respecting setbacks; Agricultural buildings on classified agricultural property, non-occupancy; Private homes and apartments with 4 or fewer units (not transient); Petroleum refineries and pulp/paper mills (office/shop buildings excepted); Mine buildings on mine sites (MCA Title 82, Ch 4); Internal remodeling only (no structural changes). Note: Confirm with City Planning (406-932-5470) that work meets Big Timber zoning and exemption criteria before proceeding without permit.

How do I schedule a building inspection in Big Timber, MT?

Inspections can be scheduled via: , , . Minimum 24 hours advance notice required.

City Building Permits

Big Timber, MT - 2026 Building Permit Guide

How to apply for a building permit in Big Timber, Montana. Permit authority, application steps, fees, and inspection requirements.

Montana Sweet Grass County Updated March 2026

Permit Authority

Big Timber is the only incorporated municipality in Sweet Grass County. NOT a certified local code enforcement program; building permits fall under Montana State Building Codes Bureau jurisdiction. Handles zoning enforcement, land use permits, and local ordinance compliance within city limits. Separate jurisdictional authority from unincorporated county for zoning/planning matters only.

Department: City of Big Timber – Planning Department (administered jointly with Sweet Grass County as City-County Planning Office)
Address: City Hall: 103 E 3rd Avenue, Big Timber, MT 59011; Planning Office: Sweet Grass County Annex, 291 Centennial Drive, PO Box 888, Big Timber, MT 59011
Phone: (406) 932-5611 (Clerk/Treasurer); (406) 932-5470 (Planning Office)
Email: citybtmt@itstriangle.com
Website: https://cityofbigtimber.com/

Online Permit Portal

Open Montana Building Permits Portal

Platform: Montana State EBIZ.MT.GOV • Account required: Yes • Submission: In-person only

Additional resources:

Big Timber Zoning Information

Application Process

Contact City Planning Office at (406) 932-5470 to verify zoning compliance, setbacks, and land use permit requirements for location
Obtain building zoning permit from City Planning if required by Big Timber Zoning Ordinance (Title 11)
Prepare construction documents per Montana/International Building Code requirements: site plans with property boundaries, architectural/engineering drawings, electrical, mechanical, plumbing plans, building valuation estimate
Submit state building permit application via EBIZ.MT.GOV with Building Permit/Plan Review Application, complete construction plans, professional seals (if required), and proof of local zoning compliance
Plan review by Montana Building Codes Bureau (2–3 weeks average if complete)
Receive state building permit
Schedule inspections with state or designated inspector for foundation, framing, electrical, plumbing, mechanical, final
Coordinate final sign-off with city and state before occupancy

Typical processing time: 2–3 weeks for plan review if complete

Source: City of Big Timber – Planning Department (administered jointly with Sweet Grass County as City-County Planning Office)

General Requirements

Any building, structure, or land use requiring occupancy must comply with Big Timber Zoning Ordinance and state building code; new buildings, additions, alterations; any project involving structural, electrical, mechanical, or plumbing work; projects not listed under Exempt Work

Required Documents

Land Use Permit Application (if zoning compliance verification needed)
Building Permit/Plan Review Application (state form)
Architectural and engineering drawings with professional seals (if code-required)
Site plans showing property lines, footprint, setbacks, parking
Floor plans, sections, elevations
Electrical, mechanical, plumbing plans (if applicable)
Building valuation with itemized costs
Proof of property ownership or authorization

Building code: 2022 International Building Code (IBC) with Montana modifications; 2022 International Residential Code (IRC); 2022 International Mechanical Code (IMC); 2022 International Fuel Gas Code (IFGC); 2024 IBC adoption planned for mid-2026
Contractor requirements: Inspectors must be state-certified. Montana Building Codes Bureau or designate. Big Timber, as a non-certified jurisdiction, typically relies on state inspectors for final approval.

Fees

Permit fee formula: State Building Permit: 1–2% of total project valuation; Local Land Use/Zoning Permit: Not specified in available documentation – contact City Planning Office at (406) 932-5470
Payment note: Applicants should confirm whether Big Timber assesses separate local planning/zoning fees beyond the state building permit fee.

Fees change. Verify current amounts at the official fee schedule.

Work That Does NOT Require a Permit

Contact the City of Big Timber – Planning Department (administered jointly with Sweet Grass County as City-County Planning Office) to confirm whether your project requires a permit before starting work.

Inspections

How to Schedule

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Scheduling deadline: Minimum 24 hours advance notice required
Inspection hours: City Hall: Monday–Friday 7:00 AM–3:30 PM; Planning Office: Monday–Thursday 8:30 AM–5:00 PM (Closed Fridays)

Typical inspection sequence: Standard inspection sequence: (1) Foundation – Before concrete backfill; (2) Framing – After structural skeleton, before drywall; (3) Plumbing Rough-In – After framing, before walls closed; (4) Electrical Rough-In – After framing, before drywall; (5) Mechanical/HVAC – After framing; (6) Final – All work complete, before occupancy. All inspections must pass. Certificate of Occupancy issued by city upon final inspection approval. Deficient work requires correction and re-inspection before project sign-off.

Additional Resources

Building code: 2022 International Building Code (IBC) with Montana modifications; 2022 International Residential Code (IRC); 2022 International Mechanical Code (IMC); 2022 International Fuel Gas Code (IFGC); 2024 IBC adoption planned for mid-2026
Zoning information: View zoning info
Owner-builder rules: View rules
City of Big Timber Official Website
Montana Building Codes Bureau
EBIZ.MT.GOV Portal
Montana Code Adoption (UpCodes)
Sweet Grass County Planning Forms & Resources
License lookup guide: Montana Contractor License Requirements
Contract template: Montana Homeowner-Contractor Agreement
Montana hub: Montana Contractor License & Permit Hub

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the City of Big Timber – Planning Department (administered jointly with Sweet Grass County as City-County Planning Office) before applying.

Frequently Asked Questions

Big Timber Building Permit FAQ

Do I need a building permit in Big Timber, MT?: Any building, structure, or land use requiring occupancy must comply with Big Timber Zoning Ordinance and state building code; new buildings, additions, alterations; any project involving structural, electrical, mechanical, or plumbing work; projects not listed under Exempt Work
How much does a building permit cost in Big Timber, MT?: Fees are calculated as: State Building Permit: 1–2% of total project valuation; Local Land Use/Zoning Permit: Not specified in available documentation – contact City Planning Office at (406) 932-5470.
How do I apply for a building permit in Big Timber, MT?: 1. Contact City Planning Office at (406) 932-5470 to verify zoning compliance, setbacks, and land use permit requirements for location 2. Obtain building zoning permit from City Planning if required by Big Timber Zoning Ordinance (Title 11) 3. Prepare construction documents per Montana/International Building Code requirements: site plans with property boundaries, architectural/engineering drawings, electrical, mechanical, plumbing plans, building valuation estimate 4. Submit state building permit application via EBIZ.MT.GOV with Building Permit/Plan Review Application, complete construction plans, professional seals (if required), and proof of local zoning compliance 5. Plan review by Montana Building Codes Bureau (2–3 weeks average if complete) 6. Receive state building permit 7. Schedule inspections with state or designated inspector for foundation, framing, electrical, plumbing, mechanical, final 8. Coordinate final sign-off with city and state before occupancy
How long does it take to get a building permit in Big Timber, MT?: Typical processing time is 2–3 weeks for plan review if complete.
What work is exempt from building permits in Big Timber, MT?: The following work is generally exempt: Farm or ranch buildings (not intended for human occupancy); Private storage buildings and garages; Sheds under 200 sq ft, 12 ft max height, respecting setbacks; Agricultural buildings on classified agricultural property, non-occupancy; Private homes and apartments with 4 or fewer units (not transient); Petroleum refineries and pulp/paper mills (office/shop buildings excepted); Mine buildings on mine sites (MCA Title 82, Ch 4); Internal remodeling only (no structural changes). Note: Confirm with City Planning (406-932-5470) that work meets Big Timber zoning and exemption criteria before proceeding without permit.
How do I schedule a building inspection in Big Timber, MT?: Inspections can be scheduled via: , , . Minimum 24 hours advance notice required.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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