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TRUSTED BY AUBURN, NH HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon35
    Verified excavation services reviews

Top-Rated Excavation pros in Auburn - Updated Nov 2026

Avatar for Twin Timber Construction
Twin Timber Construction
5.0(
8
)
Building Site - Preparation and Clearing

Serving Auburn, NH and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

"We had an amazing experience with Twin Timber! They completed a full kitchen remodel for us, and we couldn’t be happier with the results. From start to finish, they were professional, reliable, and paid incredible attention to every detail. The quality of their craftsmanship is outstanding, and they made the entire process smooth and stress-free. Our kitchen turned out even better than we imagined, and we’ve received so many compliments on it. We highly recommend Twin Timber to anyone looking for a beautiful, high-quality renovation. Thank you for making our dream kitchen a reality!"
Laconia Custom Home
Laconia Custom Home
Laconia Custom Home
15 neighbors recently requested a quote
Corriveau Construction Company
5.0(
6
)
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingLandscape - Minor Grading or Resloping

Serving Auburn, NH and surrounding areas

Approved

In business since 1972

Free estimates

Customers say: Quick response

"I could not be happier with the work performed by Bob and his team. They were extremely profession, delivered everything promised, were prompt and friendly! Our project turned out even better than we thought possible and the cost was extremely fair. I would highly recommend Corriveau Construction!!"
Response time1 day
6 neighbors recently requested a quote
Recommended by60%of homeowners
McAdams Excavation & Landscaping
3.9(
27
)
Landscape - Minor Grading or ReslopingExcavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Auburn, NH and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"The attention to detail of the work was top rate. We had three sink holes in our yard that they took care of for us, as well as spreading loam for us to start a lawn in the spring. I very highly recommend McAdams Excavation."
Response time1 day
26 neighbors recently requested a quote
Recommended by80%of homeowners
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Excavating FAQs, 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.

Because decomposed granite is a durable material, a crushed rock or gravel base is optional as long as the DG is properly installed and compacted. However, installing a base is a good idea because it will ensure proper drainage and stability and act as a weed suppressant (although you may still occasionally have to pull weeds). Installing an adequate base can also increase the durability of driveways and walkways. If you forego the paver base or gravel underneath, line the area with landscaping fabric to avoid weeds.

Digging out a basement takes anywhere from a few days to a few months. Most projects take at least two to five weeks, but it could take several months if you encounter obstacles. This project takes longer if you need to brace or raise your home before the excavation. Digging out a basement in new construction can take as little as three days.

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.

There is no standard depth for burying a septic tank; they are typically buried anywhere from 4 inches to 4 feet underground. The final depth depends on several factors, including the depth of your main sewer line, the height of the bedrock, soil type, local regulations, and the property's landscape. If you plan to grow grass or plants over the tank, a depth of at least 4 to 6 inches is recommended. Deeper tanks can be more difficult to locate, but a septic professional can help find it for you.

The Auburn, NH homeowners’ guide to excavation services

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