How much does commercial construction insurance cost in Montana? (2026)
Commercial Construction insurance pricing in Montana is shaped by the same state-specific bureau loss-cost filings that govern every commercial policy issued in Montana. Below: the most-recent Montana filings affecting commercial construction operations, cited to the regulator or bureau filings they came from — primary-source, government-held pricing records. Read the full national context on the Commercial Construction cost guide.
Recent rate-filing activity — 1 state filings across 1 commercial line
Commercial carriers can't charge whatever they want — each state's Department of Insurance must approve loss-cost filings before they take effect. These are primary-source, government-held records available on SERFF Filing Access. Cited below: the most-recent active filings affecting commercial construction operations, each cited to the regulator or bureau filing it came from.
| Line | State | Overall change | Effective | Filing |
|---|---|---|---|---|
| WC | MT | Overall 0.0% advisory loss cost (amended from +0.5%) | Jul 1, 2025 | SERFF #NCCI-134393040 |
Source: SERFF Filing Access (filingaccess.serff.com) — the official public-records interface for state Department of Insurance filings. Loss-cost changes shown are the overall bureau-wide change in each state; the actual impact on your quote depends on your class code, payroll, experience modifier, and carrier-specific loss-cost multiplier (LCM). Get a quote for your exact numbers.
National context — Commercial Construction insurance overview
Commercial building work is priced by its contracts: owners and lenders specify the general liability limits you must carry before groundbreaking, builders risk insures the structure and materials during construction, workers' compensation covers crews across trades, and surety bonds — bid, performance, payment — are how public and institutional work is won at all. Umbrella layers above the primary limits are the norm, not the exception.
As an industry-typical estimate, a small commercial GC commonly runs roughly $5,000–$15,000+/year for general liability alone, with builders risk priced per project value and workers' comp on payroll by trade. No insurance bureau publishes GC premiums, so every dollar here is an estimate; each fact is sourced to a named authority (IRMI, III, OSHA, NCCI). Use the calculator below, then get a real quote in 5 minutes.
Industry-typical market ranges (national)
Sourced from III, NCCI, ISO, NAIC, BLS, FMCSA, FDA, NRA — government and bureau publications, not from our quote form
Coverage a commercial builder typically carries (industry-typical estimates):
- General liability at contract limits: owners and lenders specify limits and additional-insured status before work begins. III commercial GL, IRMI additional insured.
- Builders risk: the structure, materials and fixtures during the course of construction. IRMI builders risk.
- Workers' compensation: crews across trades rate by payroll and classification. III workers comp, NCCI Atlas.
- Surety bonds: bid, performance and payment bonds are the entry ticket to public and institutional work. IRMI performance bond.
OSHA's focus-four construction hazards — falls, struck-by, caught-between, electrocution — are the loss reality behind every rate. OSHA construction.
For Montana-specific direction, see the filed-rate table above.
Industry context — what published research says about Commercial Construction coverage
- The contract writes your policy. Owners and lenders specify limits, additional-insured wording and builders-risk responsibility before groundbreaking — commercial coverage is procurement, not shopping. IRMI additional insured.
- Builders risk follows the project. The structure mid-build is nobody's property policy — builders risk exists for exactly that window. IRMI builders risk.
- Bonding capacity is business capacity. Public and institutional work is won through bid/performance/payment bonds — surety strength decides what you can even bid. IRMI performance bond.
How to lower your commercial construction insurance cost
General levers that apply nationally — Montana operators may also have state-specific levers (e.g. non-subscriber WC, multi-jurisdiction permit consolidation).
Get your actual Montana quote in 5 minutes
The data above is regulator-filed direction. Your actual Montana quote depends on class code, payroll, experience modifier, and the LCM each carrier files.
Get a free Montana quote → 📞 Call 1-833-505-2594More Montana rate-filing detail
- All Montana commercial rate filings (every line, every recent filing) — the broader rate-data view for Montana
- Rate filings by state — directory of all 47+ states with active filings
- National Rate Change Tracker — every filing across every state, sortable
Get a real Montana quote for commercial construction
The data above shows the regulator-filed direction for Montana. For your actual quote — based on payroll, experience modifier, and the LCM each carrier files — request a free quote in under 90 seconds.
Get a free Montana quote →Related guides
Sources cited (national context above)
- Commercial General Liability Insurance — Insurance Information Institute (III), 2024
- Builders Risk Insurance — International Risk Management Institute (IRMI), 2024
- Additional Insured — International Risk Management Institute (IRMI), 2024
- Performance Bond — International Risk Management Institute (IRMI), 2024
- Workers Compensation Insurance — Insurance Information Institute (III), 2024
- NCCI Atlas — Class Codes — National Council on Compensation Insurance (NCCI), 2024
- Construction Industry — Occupational Safety and Health Administration (OSHA), 2024
- Umbrella Liability Insurance — International Risk Management Institute (IRMI), 2024