Big Timber

Sweet Grass County, Montana

Last verified September 16, 2026

Big Timber is a jurisdiction in Sweet Grass County, Montana, with an online portal for searching and pulling active or historical building permits. Use the contact information below to reach the local building department, or the mailing address if the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Contact

Phone: 406-932-5610
Department Site: Building Codes Bureau (State-Administered) (opens in a new tab)

Source: bsd.dli.mt.gov (opens in a new tab)

Permit Search

eBiz Building Permit Portal (opens in a new tab)

Certificate Holder Mailing Address

City of Big Timber
103 East 3rd Avenue
Big Timber, MT 59011

Use this address when the jurisdiction needs to be listed as a certificate holder on a contractor's insurance documentation.

Additional Notes

Big Timber has no certified local building code program; building permits are administered directly by the State Building Codes Bureau (Dept. of Labor & Industry, 406-841-2056). Phone number listed is for Big Timber City Hall.

What You Need Before Applying for a Permit

Most building departments ask for the same core package before they'll issue a permit: a completed application naming the property owner and contractor, the contractor's state license number and proof of insurance (general liability, and workers' comp if employees are on the job), a notice of commencement or equivalent recorded filing for larger jobs where the state requires one, and scaled plans or a site plan for anything beyond minor repairs. Roofing, fence, pool, and solar permits typically have their own simplified checklists — Big Timber's department (above) can confirm exactly what applies to your project.

Why this matters for insurance: permit history is one of the first things an underwriter or adjuster checks. Unpermitted work — a finished basement, an added bedroom, a rebuilt roof — can complicate a claim or even void coverage for that portion of the loss, and it routinely surfaces during a home inspection. Pulling the right permit up front, and keeping the closed-permit record on file, protects both the property's value and its insurability at resale.