Hiring an excavation contractor in Iowa
Gradeline lists 703 excavating and site work contractors in Iowa across 89 counties. This guide covers the Iowa rules that affect a dig: frost depth and 811 notice through Iowa One Call.
What to know before you hire in Iowa
4.5★
Know what a good rating looks like here
Iowa contractors average 4.5 stars on Google. Shortlist crews at 4.5 or better with a solid review count (90 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 Iowa. 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
Iowa law requires 2 business days notice to 811 (Iowa One Call) before any digging. Ask whether your contractor files the request, and plan the start date around the wait.
31%
Most listed contractors have no website
Only 31% of listed Iowa 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 Iowa contractors in one request.
Get free quotesArea-specific FAQ
How far in advance do I need to call before digging in Iowa?
At least 2 working days. Iowa One Call 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 Iowa?
In Iowa, 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 Iowa?
The frost line in Iowa is around 48 inches, so the ground freezes hard in winter. Most digging happens from spring through fall, once the thaw dries sites out.
