Hiring an excavation contractor in Idaho
Gradeline lists 897 excavating and site work contractors in Idaho across 39 counties. This guide covers the Idaho rules that affect a dig: licensing, frost depth and 811 notice through Idaho 811.
What to know before you hire in Idaho
4.7★
Know what a good rating looks like here
Idaho contractors average 4.7 stars on Google. Shortlist crews at 4.5 or better with a solid review count (179 qualify), and treat anything under 4.0 as a red flag.
Yes
Check the state license
Idaho requires a contractor license (Idaho Public Works Contractor), issued by Idaho Division of Building Safety. Get the number in writing before you sign.
36 in
Footings go below the frost line
Frost reaches about 36 inches in Idaho. 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
Idaho law requires 2 business days notice to Idaho 811 before any digging. Ask whether your contractor files the request, and plan the start date around the wait.
34%
Most listed contractors have no website
Only 34% of listed Idaho 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 Idaho contractors in one request.
Get free quotesArea-specific FAQ
How far in advance do I need to call before digging in Idaho?
At least 2 working days. Idaho 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.
Do excavation contractors need to be licensed in Idaho?
Yes. Idaho requires a state contractor license (Idaho Public Works Contractor) for this work, regulated by Idaho Division of Building Safety. Look up the license number before you sign a contract.
How deep do footings need to be in Idaho?
In Idaho, footings typically need to extend below the frost line, which is around 36 inches here. A local contractor will confirm the code requirement for your site.
When is the best time of year to dig in Idaho?
Spring through fall is the main excavation season in Idaho. A frost line around 36 inches makes winter digging slower, and the spring thaw leaves sites soft.
