County Building Permits
Sanders County, MT - 2026 Building Permit Guide
How to apply for a building permit in unincorporated Sanders County, Montana. Permit authority, application steps, fees, and inspection requirements.
Permit Authority
Unincorporated areas of Sanders County; oversees subdivision regulations, building for lease or rent regulations, floodplain regulations, airport affected area regulations, and road encroachment permits
- Department
- Sanders County Land Services
- Address
- 1111 Main Street, Thompson Falls, MT 59873
- Phone
- (406) 827-6965
Online Permit Portal
Platform: • Account required: No • Submission: In-person only
Application Process
- Contact Sanders County Land Services to determine permit requirements for your specific project
- Prepare construction plans and documentation (architectural drawings, site plans, engineering reports as required)
- Submit Building Permit/Plan Review Application along with construction documents
- County reviews for compliance with local codes and regulations
- Upon approval, obtain permit and proceed with construction
- Schedule required inspections with county
- After final inspection approval, obtain certificate of occupancy
Typical processing time: Approximately 3 weeks for plan review (state standard; local may vary)
Source: Sanders County Land Services
General Requirements
New construction, additions, alterations, repairs, renovations, demolition, and land development projects
Required Documents
- Complete construction plans
- Architectural drawings (may need seals)
- Site plans
- Proof of property ownership
- Jurisdiction-specific forms
- Building code
- Montana has adopted 2021 International Building Code (IBC 2021) and International Residential Code (IRC 2021) statewide; Sanders County enforces these adopted codes through its Land Services department
Fees
- Payment note
- No specific fee schedule found in research. Contact Sanders County Land Services at (406) 827-6965 for current fee information. State permits contact Montana Building Codes Program at (406) 841-2056 or BUILDINGCODES@MT.GOV
Work That Does NOT Require a Permit
Contact the Sanders County Land Services to confirm whether your project requires a permit before starting work.
Inspections
How to Schedule
- ()
Typical inspection sequence: Typical inspections include foundation, framing, electrical, plumbing, mechanical, and final. Advance notice required (specific timeframe not specified in available data). Inspections necessary before certificate of occupancy is issued
Additional Resources
- Building code: Montana has adopted 2021 International Building Code (IBC 2021) and International Residential Code (IRC 2021) statewide; Sanders County enforces these adopted codes through its Land Services department
- Montana Building Codes Program
- Sanders County Official Website
- EBIZ Montana Online Portal
- Montana Building Codes - Current Adopted Codes
- 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 Sanders County Land Services before applying.
Frequently Asked Questions
Sanders County Building Permit FAQ
- Do I need a building permit in unincorporated Sanders County, MT?
- New construction, additions, alterations, repairs, renovations, demolition, and land development projects
- How do I apply for a building permit in unincorporated Sanders County, MT?
- 1. Contact Sanders County Land Services to determine permit requirements for your specific project 2. Prepare construction plans and documentation (architectural drawings, site plans, engineering reports as required) 3. Submit Building Permit/Plan Review Application along with construction documents 4. County reviews for compliance with local codes and regulations 5. Upon approval, obtain permit and proceed with construction 6. Schedule required inspections with county 7. After final inspection approval, obtain certificate of occupancy
- How long does it take to get a building permit in unincorporated Sanders County, MT?
- Typical processing time is Approximately 3 weeks for plan review (state standard; local may vary).
- What work is exempt from building permits in unincorporated Sanders County, MT?
- The following work is generally exempt: Farm and ranch buildings; Mining buildings on mining property; Petroleum refineries and pulp and paper mills (except office and shop buildings); Residential buildings containing less than five dwelling units (except when serving transient guests); Private garages and private storage buildings used solely for owner's own use and not commercial; Some agricultural structures. Note: Trade permits (electrical, plumbing, mechanical) still required where applicable
- How do I schedule a building inspection in unincorporated Sanders County, MT?
- Inspections can be scheduled via: .
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