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  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon45
    Verified excavation services reviews

Top-Rated Excavation pros in Seabrook - Updated Nov 2026

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

Serving Seabrook, 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 Seabrook, 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 Seabrook, NH and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"I hired Bear rock Hardscapes to replace my driveway drain and regrade a portion of the driveway, and the entire experience was excellent from start to finish. Communication was clear and consistent throughout the project. Dan was the epitome of professionalism, and the pricing was fair and reasonable. Bear Rock delivers high-quality professional work and leaves the property spotless only beautifully finished landscape remains."
Project Photos
Steps
HARDSCAPES
HARDSCAPES
WALKWAY

+20

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Excavating FAQs, answered by experts

The easier way to find buried sprinkler lines is to use the plan from the professionals who installed the system. If you don’t have professional plans, listen for running water on your lawn when you turn on the system. You may also spot wet areas, giving you an idea of where the heads are. Once you find the sprinkler heads, you’ll likely be able to connect the dots between them, revealing the system below.

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.

Downspouts should be buried at least 5 to 10 feet away from your foundation. This can vary depending on your local building codes, soil type, and property slope. The main goal is to ensure water is directed away from your foundation.

It takes one hour to dig a 10-foot trench by hand. Use a trenching shovel with a sharp tip and a long head. Plan for more time if your soil is heavy or rocky. Consider renting a trencher if you’re digging a long or deep trench or if you have challenging soil or terrain. 

Most residential basements are 8 to 10 feet deep. You can dig deeper depending on building codes, but it does become more difficult. You’ll likely need to install stronger foundation walls and additional supports to handle the increased load. Depending on the water table, you may also need a water management system. Clay soil can support a deeper foundation than sandy soil. A structural engineer will be able to tell you the maximum, feasible depth.

The Seabrook, NH homeowners’ guide to excavation services

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