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*The Angi rating for Excavation companies in Gillette, WY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

*The HomeAdvisor rating for Excavation companies in Gillette, WY is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

Last update on March 19, 2026

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Avatar for RJM Concrete Design
RJM Concrete Design
5.0(
4
)

Serving Gillette, WY and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"I recently had a large patio slab poured and some grading and decorative rock brought in. Justin did a great job, very professional, he explained everything that he was going to do. it turned out wonderful and I would recommend RJM to my family and friends without hesitation. Thank you Justin, for the good job and for being a new friend. David Holland"
Patio Steps
Rear Pfatio
Front Patio
Broomed Patio
Water Treatment Channel

+1

Response time7 hrs
7 neighbors recently requested a quote
Recommended by50%of homeowners
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Avatar for Cothren Plumbing & Construction
Cothren Plumbing & Construction
5.0(
10
)

Serving Gillette, WY and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"Alex was efficient, professional and friendly and arrived as soon as he could get here. We were having sewer trouble and he stayed to see that the problem was fixed and we were no longer having problems with the sewer, even though it was after dark before he packed up his tools. We would definitely recommend Cothren Plumbing and Construction for any of your construction or plumbing needs."
Lovell Senior Center
Lovell Senior Center
New Deck & Concrete
New Deck & Concrete
New Deck & Concrete

+2

Response time3 hrs
Response rate100%
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Excavating questions, answered by experts

In the United States, a depth of 36 inches (three feet) for underground water lines is the accepted industry standard. This depth varies from location to location based on local conditions. In areas with colder winters, they may be buried deeper to prevent frozen well water pipes : This is usually at least six inches below the frost level. The International Plumbing Code calls for a minimum of 12 inches below grade.

A walk-behind trencher can cut through roots as long as they’re not too thick, making a project much easier than digging with a shovel and other hand tools. Assess your terrain and the number of trees in the surrounding area to determine if a walk-behind trencher will ease the job. Digging a trench by hand is much more time-consuming and labor-intensive. 

Generally, a trenchless sewer line is worth the cost. If your old system needs replacement, trenchless sewer repair or replacement can save you thousands on excavation costs. Every homeowner’s situation is different, but this method is definitely worth it in a lot of cases.

Depth is not a qualifying component of evacuation. Any human-made cut, cavity, or depression in the earth’s surface is considered excavation. The hole from excavation can be any size, shape, or depth. Excavation is used to create foundations, reservoirs, drainage ditches, and roads. Long, narrow excavations are called trenches and are often used for underground utilities.

Slab foundations are more affordable than crawl spaces because they require minimal excavation, as the slab sits directly on the ground or on footers that only sink a few feet into the ground. Crawl spaces require excavation of the entire footprint of the home to several feet below the surface. Not only does that mean higher labor costs, but more materials are necessary for the concrete foundation walls.

The Gillette, WY homeowners’ guide to excavation services

From average costs to expert advice, get all the answers you need to get your job done.

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