A foundation dig for a new home costs $1,500 to $10,000 by HomeGuide's national 2026 figures, and a basement dig $10,000 to $30,000. Around Cheyenne, frost depth, caliche and swelling clay shape every foundation.
The costs quoted on this page are national ranges published by HomeGuide, and none of them is our price. Frost depth, caliche, swelling clay, access and the long hauls of rural Wyoming all change a Cheyenne job. We read the HomeGuide pages in October 2026.
What does foundation excavation cost for a new Cheyenne home?
Foundation excavation for a new home costs $1,500 to $10,000 nationally, per HomeGuide, and $20,000 or more for a large foundation in rocky ground, boulders or heavy clay. Those figures are for the digging and nothing more. A finished slab for 2,000 square feet is $12,000 to $28,000, and a basement foundation $70,000 to $100,000.
What does basement excavation cost on the High Plains?
HomeGuide's basement section puts new-construction basement digs at $10,000 to $30,000, with 2 to 4 days of machine work as typical. An 8 to 9 foot dig in standard soil is $10,000 to $20,000, 10 to 12 feet $20,000 to $30,000, and difficult ground $30,000 to $50,000 or more. HomeGuide's project table shows a lower figure, but the basement section is written for this question.
Can a crawl space be turned into a basement, or a basement dug deeper?
A crawl space can be turned into a basement, but it is a structural project: HomeGuide puts a new basement under an existing house with a crawl space at $20,000 to $45,000 or more for the dig alone. An engineer, a permit and a foundation contractor to support the house are all required.
What does it cost to dig around the foundation of an older Cheyenne house so it can be repaired?
Digging around a foundation for repair or waterproofing costs $5,000 to $15,000, or $100 to $250 per linear foot, according to HomeGuide. Exterior waterproofing itself runs $6,000 to $18,000. Older Cheyenne and Laramie homes with stone or block basements are where we do most of this work.
How far from a stone or block basement wall do you dig for a repair?
For a foundation repair, we dig about two to three feet from the wall, enough for the crew to work, and slope or shore the sides of deeper digs. Sandy and gravelly soil needs a wider slope. How deep we go is up to the repair contractor or the engineer.
Can you dig next to my foundation without damaging the wall?
Yes, digging next to a foundation without damaging the wall comes down to method: short sections, the bucket kept off the footing, the last few inches dug by hand, and backfill as soon as the crew is done. In winter we also keep frost from getting under the exposed footing.
How deep must footings be to clear the frost line in Cheyenne?
Footing depth is set by the building code your city or county has adopted and by the engineer's plans, and footings must sit below the frost line on firm soil. Cheyenne's frost goes deep, so do not guess the number: the building office and the inspector confirm it for your address.
What does backfill around a new frost-deep foundation cost?
Backfill is usually part of the dig. When extra material is needed, HomeGuide's trenching page lists backfill at $5 to $25 per cubic yard. Clean, well-draining fill compacted in layers against a basement wall settles less and holds less water than clay or chunks of caliche.
My foundation cracked after nearby digging. Who is responsible?
Who is responsible for a crack after nearby digging depends on the cause, and that is a question for an engineer. Photograph and measure it right away with dates, and notify the neighbor and their contractor in writing. Photos from before the work help most. This is general information about Wyoming, not legal advice.
What does excavating for a walkout basement door cost?
HomeGuide publishes no figure for a walkout basement door. The digging is similar to excavating along a foundation, $100 to $250 per linear foot, and the wall opening needs a structural design and a permit. In Cheyenne, a walkout also needs a drain and a spot where blowing snow will not fill the doorway.
Want a price for your own place? Call or text (307) 317-7006, and after a site visit we put the scope and the cost on paper.