🏛️ MT STATE DIRECTORY 1 Active County Hubs

Montana Commercial Permitting Directory

Access official municipal building fee calculators, contractor license bond prerequisites, and plan review turnaround times for all active Montana county jurisdictions.

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Governing Building Code Standard

International Building Code (IBC 2024 / ICC)

Enforces 2024 model building code editions, structural snow/wind load engineering, and IECC commercial energy compliance.

State Regulatory Authority

Montana State Contractor Licensing Board

Contractor license verification and mandatory state bonding thresholds enforced across all Montana county building departments.

⏱️ Plan Check SLAs 3–14 business day initial plan review turnarounds across active county building divisions.

📜 Contractor Bonds Mandatory $10k–$50k surety bond filing required prior to commercial permit release.

📐 Submittal Standards Architectural stamps, COMcheck calculations, and structural load engineering packages.

💵 Valuation Fee Schedules Tiered valuation formulas per $1,000 construction cost plus local plan check surcharges.

Montana County Workstations

Select a county building department to calculate municipal fees & bond rules

1 Verified

Yellowstone County

City of Billings Building Division

Verified 2026

Plan Review SLA: 8 - 14 Business Days

Mandatory Surety Bond: $10,000

COI Coverage Minimum: $1.0M

Launch Yellowstone County Workstation →

Submittal Checklist Montana Plan Submittal Package

Standard Document Requirements for Montana Permits

Before submitting building plans to any county AHJ in Montana, ensure your project package includes the following required documentation:

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Stamped Architectural & Structural Plans Signed and sealed by a licensed Montana architect or professional engineer (PE).

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Energy Compliance Documentation COMcheck or REScheck energy compliance calculations for building envelope & mechanical HVAC.

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Contractor License & Active Surety Bond Verified license status with Montana State Contractor Licensing Board and active $10k–$50k bond certificate.

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Site Plan & Zoning Verification Property line setbacks, parking calculations, and stormwater management compliance.

Regulatory Reference

Montana Building Permitting & Code FAQs

Q1: What model building codes are enforced in Montana in 2026?

Montana enforces the International Building Code (IBC 2024 / ICC). Local municipal building departments (AHJs) adopt state amendments and local fee schedules.

Q2: Are contractor license surety bonds required in Montana?

Yes. Most Montana municipalities require commercial contractors to maintain an active license bond ($10,000–$50,000) and general liability insurance prior to permit issuance.