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§ MT Sanders County
County building permits

Unincorporated Sanders County

How to apply for a building permit in unincorporated Sanders County, Montana. Permit authority, application steps, fees, and inspection requirements.

Last verified
March 2026
On this page 5
§ 01

Permit authority

Sanders County Land Services

Street address
1111 Main Street, Thompson Falls, MT 59873
Phone
(406) 827-6965
Coverage
Unincorporated areas of Sanders County; oversees subdivision regulations, building for lease or rent regulations, floodplain regulations, airport affected area regulations, and road encroachment permits
Online portal
Montana State Portal (EBIZ.MT.GOV)
Website
Department website
§ 02

When a permit is required

Permit triggers and exempt work for Sanders County

New construction, additions, alterations, repairs, renovations, demolition, and land development projects

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
  • Exempt Farm and ranch buildings
  • Exempt Mining buildings on mining property
  • Exempt Petroleum refineries and pulp and paper mills (except office and shop buildings)
  • Exempt Residential buildings containing less than five dwelling units (except when serving transient guests)
  • Exempt Private garages and private storage buildings used solely for owner's own use and not commercial
  • Exempt Some agricultural structures

Note: Trade permits (electrical, plumbing, mechanical) still required where applicable

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
§ 03

Application process

Typical processing: Approximately 3 weeks for plan review (state standard; local may vary)

  1. 01
    Contact Sanders County Land Services to determine permit requirements for your specific project
  2. 02
    Prepare construction plans and documentation (architectural drawings, site plans, engineering reports as required)
  3. 03
    Submit Building Permit/Plan Review Application along with construction documents
  4. 04
    County reviews for compliance with local codes and regulations
  5. 05
    Upon approval, obtain permit and proceed with construction
  6. 06
    Schedule required inspections with county
  7. 07
    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 ↗

§ 04

Required inspections

Scheduling and sequence

How to schedule
  • Contact Sanders County Land Services (phone)

Typical 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

Source: Sanders County Land Services ↗

§ 05

Frequently asked

Common questions about unincorporated Sanders County permits

01 Do I need a building permit in unincorporated Sanders County, MT? ▸
New construction, additions, alterations, repairs, renovations, demolition, and land development projects
02 How do I apply for a building permit in unincorporated Sanders County, MT? ▸
To apply for a building permit in unincorporated Sanders County, MT, follow these steps: 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
03 How long does it take to get a building permit in unincorporated Sanders County, MT? ▸
Building permit processing times in unincorporated Sanders County, MT typically run Approximately 3 weeks for plan review (state standard; local may vary). Timelines can vary based on project complexity and current department workload.
04 What work is exempt from building permits in unincorporated Sanders County, MT? ▸
Not all construction work requires a permit 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 When in doubt, confirm with the local building department before starting work.
05 How do I schedule a building inspection in unincorporated Sanders County, MT? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in unincorporated Sanders County, MT via: Contact Sanders County Land Services.
last verified March 2026 source Sanders County Land Services ↗ entry id permits/montana/sanders/unincorporated
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Educational reference. Permit rules and fees change — confirm current requirements directly with Sanders County Land Services before applying. Jaspector is not legal advice.

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