County Building Permits
Flathead County, MT - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Flathead County, Montana. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
Bigfork is a Census Designated Place (not incorporated) in Flathead County. Building permits are administered by state unless Bigfork has local authority not documented in available sources. Property owners should contact state bureau or Flathead County Planning and Zoning to confirm jurisdiction.
- Department
- State of Montana Building Codes Program
- Address
- 301 S. Park Avenue, 4th Floor, Helena, MT 59602
- Phone
- (406) 841-2056
- buildingcodes@mt.gov
Online Permit Portal
Platform: Montana state online portal • Account required: Yes • Submission: In-person only
Additional resources:
Application Process
- Contact state Building Codes Program at (406) 841-2056 to confirm jurisdiction and requirements for specific property
- Submit Building Permit/Plan Review Application and construction plans to state bureau
- Plans reviewed (3 weeks average)
- Receive plan review comments and pay fees
- Building permit issued
- Schedule inspections with state inspector
- Obtain final inspection approval
Typical processing time: 3 weeks average for plan review
General Requirements
New buildings; alterations; additions; repairs (with exceptions)
Required Documents
- Building Permit/Plan Review Application
- Construction plans meeting state codes
- Permit validity
- Contact state bureau for specific validity period
- Building code
- Montana Building Code 2021 (2021 IBC-based) statewide
- Owner-builder
- Allowed with minimal restrictions
- Contractor requirements
- State registration required for construction contractors with employees
Fees
- Permit fee formula
- Contact (406) 841-2056 or buildingcodes@mt.gov for current fees
- Payment note
- Building Permit/Plan Review fees charged by state
Fees change. Verify current amounts at the official fee schedule.
Work That Does NOT Require a Permit
Contact the State of Montana Building Codes Program to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
- ()
- Scheduling deadline
- 24 hours notice recommended
- Time windows
- Inspection within 72 hours of notification
Typical inspection sequence: Foundation, framing, electrical, plumbing, final (as required)
Additional Resources
- Building code: Montana Building Code 2021 (2021 IBC-based) statewide
- Zoning information: View zoning info
- State Building Codes Program
- Building Permit Information
- Flathead County Planning and Zoning
- 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 State of Montana Building Codes Program before applying.
Frequently Asked Questions
Flathead County Building Permit FAQ
- Do I need a building permit in unincorporated Flathead County, MT?
- New buildings; alterations; additions; repairs (with exceptions)
- How much does a building permit cost in unincorporated Flathead County, MT?
- Fees are calculated as: Contact (406) 841-2056 or buildingcodes@mt.gov for current fees.
- How do I apply for a building permit in unincorporated Flathead County, MT?
- 1. Contact state Building Codes Program at (406) 841-2056 to confirm jurisdiction and requirements for specific property 2. Submit Building Permit/Plan Review Application and construction plans to state bureau 3. Plans reviewed (3 weeks average) 4. Receive plan review comments and pay fees 5. Building permit issued 6. Schedule inspections with state inspector 7. Obtain final inspection approval
- How long does it take to get a building permit in unincorporated Flathead County, MT?
- Typical processing time is 3 weeks average for plan review.
- What work is exempt from building permits in unincorporated Flathead County, MT?
- The following work is generally exempt: Farm and ranch buildings; Mining buildings on mining property; Petroleum refineries and pulp/paper mills (except office/shop buildings); Residential buildings with fewer than five dwelling units (except transient); Private garages and storage buildings for owner's own use (not commercial).
- How do I schedule a building inspection in unincorporated Flathead County, MT?
- Inspections can be scheduled via: . 24 hours notice recommended.
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