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Verified Reviews for Excavation pros in Lewiston, CA

*The Angi rating for Excavation companies in Lewiston, CA 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 Lewiston, CA 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 April 20, 2026

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Kelley Excavation
4.7(
16
)

Serving Lewiston, CA and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Really easy to communicate with. Was able to come give an estimate and schedule work right away, which is amazing bc majority of the local excavation companies are being contracted to work the wildfires. He was helpful with decision-making and did extra things outside the scope of job expectation. Will definitely use this company again."
Response time1 day
Recommended by100%of homeowners
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Zeis Construction
New to Angi

Serving Lewiston, CA and surrounding areas

In business since 2021

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

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TM Custom Grading & Landscaping
New to Angi

Serving Lewiston, CA and surrounding areas

I was born and raised in a local family run Landscape / Construction/Excavation Contracting Business. My communication skills along with full customer interaction with every aspect of the project , makes each job run smoothly. From Grading out a rural gravel road or installing a Septic system or concrete walkways patios complete custom Landscapes with water features Night lighting Fencing Chain Link or Wood . Free Estimates

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Excavating questions, answered by experts

The best way to protect tree roots is to avoid the roots entirely by excavating outside the root radius of the tree. For nearby projects, it’s a good idea to construct a temporary retaining wall. But that’s not always possible, depending on the project and the root system. In these cases, consider using alternative equipment like an auger to tunnel under the ground.

Remember, tree roots can damage nearby cement foundations as they grow. If a tree is close enough to interfere with large excavations, it may be better to remove the tree than risk future problems.

If you don’t wish to dig it out and convert it into a finished basement, you can still encapsulate your crawl space to protect it from damage for an average cost of $5,500. Finishing a crawl space beyond this isn’t really worthwhile, as the low ceilings mean you won’t be able to use the area as living space.

Trenches are typically 12 to 24 inches deep and 8 inches wide. However, the required depth depends on the specific project and local ordinances. For example, a French drain may need to be 18 inches deep, while a water pipe might require a depth of 24 inches and a drainage pipe 36 inches. Your city or county may have specific regulations, so it's wise to consult with an excavation professional to determine the correct depth for your project.

A trench that is less than 5 feet deep often doesn't require a protective system. Most residential trenches will not go this deep (the typical residential drainage trench is just 18 inches deep). In the event that an excavator needs to dig more than 5 feet beneath the surface, a protective system is required unless the excavation is in entirely stable rock.

Yes, you can excavate in the winter, but it might make the job harder. Frozen ground is harder to dig, and snow or ice can make the work site more hazardous. A contractor may need special equipment and techniques, such as ground-thawing methods, to break through frozen soil. Although winter excavation is possible, it may take longer and be more costly than excavating during warmer months.

The Lewiston, CA 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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