Hiring an excavation contractor in Montana
Gradeline lists 740 excavating and site work contractors in Montana across 42 counties. This guide covers the Montana rules that affect a dig: frost depth and 811 notice through Montana 811.
What to know before you hire in Montana
4.7★
Know what a good rating looks like here
Montana contractors average 4.7 stars on Google. Shortlist crews at 4.5 or better with a solid review count (134 qualify), and treat anything under 4.0 as a red flag.
60 in
Footings go below the frost line
Frost reaches about 60 inches in Montana. Any bid for footings, foundations, or buried lines should dig at least that deep. If the depth is not written in the quote, ask.
2 days
Utilities get marked before digging
Montana law requires 2 business days notice to Montana 811 before any digging. Ask whether your contractor files the request, and plan the start date around the wait.
38%
Most listed contractors have no website
Only 38% of listed Montana contractors run their own site. Judge them on reviews, photos, and years in business rather than web polish, and get at least three written quotes.
Get quotes from Montana contractors in one request.
Get free quotesArea-specific FAQ
How far in advance do I need to call before digging in Montana?
At least 2 working days. Montana 811 takes locate requests statewide and has underground utilities marked before any excavation. Hitting an unmarked gas or power line can injure the crew and lead to costly repairs.
How deep do footings need to be in Montana?
In Montana, footings typically need to extend below the frost line, which is around 60 inches here. A local contractor will confirm the code requirement for your site.
When is the best time of year to dig in Montana?
The frost line in Montana is around 60 inches, so the ground freezes hard in winter. Most digging happens from spring through fall, once the thaw dries sites out.
