Hiring an excavation contractor in Illinois
Gradeline lists 1,191 excavating and site work contractors in Illinois across 96 counties. This guide covers the Illinois rules that affect a dig: frost depth and 811 notice through J.U.L.I.E. (Illinois).
What to know before you hire in Illinois
4.5★
Know what a good rating looks like here
Illinois contractors average 4.5 stars on Google. Shortlist crews at 4.5 or better with a solid review count (177 qualify), and treat anything under 4.0 as a red flag.
48 in
Footings go below the frost line
Frost reaches about 48 inches in Illinois. 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
Illinois law requires 2 business days notice to 811 (J.U.L.I.E. (Illinois)) before any digging. Ask whether your contractor files the request, and plan the start date around the wait.
35%
Most listed contractors have no website
Only 35% of listed Illinois 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 Illinois contractors in one request.
Get free quotesArea-specific FAQ
How far in advance do I need to call before digging in Illinois?
At least 2 working days. J.U.L.I.E. (Illinois) 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 Illinois?
In Illinois, footings typically need to extend below the frost line, which is around 48 inches here. A local contractor will confirm the code requirement for your site.
When is the best time of year to dig in Illinois?
The frost line in Illinois is around 48 inches, so the ground freezes hard in winter. Most digging happens from spring through fall, once the thaw dries sites out.
