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TRUSTED BY PLAISTOW, NH HOMEOWNERS

  • Average homeowner rating star icon4.8
    Average homeowner rating
  • Verified reviews icon54
    Verified excavation services reviews

Top-Rated Excavation pros in Plaistow - Updated Nov 2026

Smithtown Landworks
5.0(
5
)
Landscape - Minor Grading or Resloping

Serving Plaistow, NH and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"I hired Matt to prepare a site for a shed we have ordered. He replied promptly for a request for an estimate. He explained what needed to be done and gave me a fixed date when he could do the work. Throughout the project, he kept me apprised of the progress and explained the choices that needed to be made. I was impressed with the care with which he approached every aspect of the project. Just a great guy to work with."
Response time5 hrs
1 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Mike & Macs Junk Removal
Mike & Macs Junk Removal
5.0(
13
)
Building Site - Preparation and Clearing - For Business

Serving Plaistow, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Mike and McKenna were outstanding to do business with. They provided a quote they were on time and Efficient and above all are professional and friendly. My experience was a great one and I will be hiring them again and referring them to others. Excellent business in Hudson."
Yard cleanout
Yard cleanout
3 neighbors recently requested a quote
Avatar for BEAR ROCK HARDSCAPES LLC
BEAR ROCK HARDSCAPES LLC
5.0(
8
)
Landscape - Minor Grading or Resloping

Serving Plaistow, NH and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Dan Gallant of Bear Rock Hardscapes did an excellent job designing & installing a curved walkway made of different colored pavers. The walkway improved the overall impression of my home. When friends saw the walkway, they hired Dan to install a walkway or patio at their houses. I would hire Dan again."
Project Photos
Steps
HARDSCAPES
HARDSCAPES
WALKWAY

+20

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Excavating FAQs, answered by experts

Sewer lines can be buried anywhere from 18 inches to 8 feet deep, with a common average depth between 18 and 30 inches. The exact depth depends on local factors like climate and soil type. In colder regions, pipes must be buried deeper (below the frost line) to prevent freezing, sometimes as deep as 8 feet. The digging depth can also impact the cost of sewer line replacement. To find the specific depth for your property, you can check the building plans for your system, which should be on file with your city or local sanitation department since permits are required for installation.

Tree experts don’t advise against digging through tree roots, but instead encourage caution and consultation with a local arborist to make sure you don’t damage the tree’s structure or interrupt its water or nutrient intake. An arborist can recommend specific practices when digging and help prune the roots or dig a trench for utilities with a tool that can remove soil without touching the tree’s roots.

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 average cost of excavation is approximately $3,200, with typical projects ranging from $500 to $15,000. Depending on the contractor, you may be charged between $50 and $200 per cubic yard or an hourly rate of $40 to $180 for an excavation specialist. The total cost is influenced by several factors, including the project size, the amount of soil to be removed, and the soil's condition. Hard soil, tree roots, or excessive rocks and clay can increase the price, potentially adding $200 to $1,200 to the final bill. Other factors that can drive up costs include the presence of nearby structures that complicate the work or tight spaces that require manual excavation instead of heavy machinery.

Landscape edging is more DIYable than trenching. You can DIY your own digging projects, but proceed carefully and only with proper knowledge of the equipment and appropriate safety measures in place. Keep in mind the project's scope and estimate how long it will take you to do it on your own. While you can certainly save money by DIYing home improvement projects, you can’t exactly hide an unfinished—or worse, ruined— landscaping job from the neighbors. It’s always safer to call an excavation pro near you to get an estimate.

The Plaistow, NH homeowners’ guide to excavation services

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