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Verified Reviews for Excavation pros in Gillette, WY

*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
)
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingLandscape - Minor Grading or Resloping

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 time11 hrs
Response rate96%
6 neighbors recently requested a quote
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Avatar for Cothren Plumbing & Construction
Cothren Plumbing & Construction
5.0(
10
)
Excavation - Major Grading or Resloping

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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Avatar for Five Star Energy Services, LLC
Five Star Energy Services, LLC
5.0(
5
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For Business

Serving Gillette, WY and surrounding areas

In business since 2020

Free estimates

Offers commercial services

"Chris performs our roofing with attention to detail and care for our home in a very efficient manner."
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+23

Response time1 day
Recommended by100%of homeowners
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Avatar for A&G Services
A&G Services
5.0(
3
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Gillette, WY and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"It was a great service. They were on time, fair price, cleaned up the mess and they did what needed to be done."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+49

Recommended by100%of homeowners
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Avatar for IMC Forestry Mulching
IMC Forestry Mulching
5.0(
2
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+1 more

Serving Gillette, WY and surrounding areas

In business since 2020

Free estimates

"Very detailed and will get done what you want"
Response time5 days
Recommended by100%of homeowners
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Showing 1-10 of 33
Excavating questions, answered by experts

Yes. A metal detector is one of the quickest and easiest ways to find your septic tank. However, metal detectors can be too expensive (costing upward of $300 in some cases), and not everyone has a metal detector just lying around. If that’s the case for you, you can also take a long metal rod and poke it into the ground at regular intervals until you hit something—likely your septic tank lid.

How deep your septic system needs to be into the ground depends on several factors. In extremely cold environments, the tank needs to rest below the maximum frost line, which can be up to six or eight feet deep. The standard burying depth for most systems is between a few inches and four feet below ground level. Depth can also depend on the slope of the landscaping and other property variables. 

Yes, you can install a trench drain if you already have concrete in your yard or garden. While it can complicate some aspects of the job and slightly run up the cost, it is doable. Residential trench drains can be easily retrofitted to outdoor areas with concrete without having to remove excessive amounts of your patio, pool area, or decorative walkways.

A perc test can take anywhere from one to eight hours to complete. The total time depends on factors like the amount of excavation required, the depth and width of the holes, and whether multiple test holes are needed. For a single hole, the process of filling it with water and monitoring the drainage rate usually takes less than an hour. Professionals can often complete the entire test in a single day. While it's possible to get results the same day, some companies may take a few days to provide the official report.

You can dig 60 to 80 linear feet by hand per day depending on the depth. Digging a 100-foot trench by hand will take you two work days, but it can take longer if you have heavy or rocky soil. If you’re digging a deep trench or one that’s over 100 feet, consider renting a mechanical trencher, such as a walk-behind or ride-on, or calling a pro for help. 

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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