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TRUSTED BY ANDOVER, NH HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon14
    Verified excavation services reviews

Top-Rated Excavation pros in Andover - Updated Nov 2026

Avatar for Kaynicki Janitorial
Kaynicki Janitorial
4.7(
13
)
Building Site - Preparation and Clearing

Serving Andover, NH and surrounding areas

Approved

In business since 1998

Free estimates

Offers commercial services

Serving our community since 1998, Kaynicki Janitorial delivers dependable, high-quality cleaning and site services. We specialize in everything from commercial janitorial maintenance and post-construction cleaning to light demolition, building site preparation, and junk/debris removal. With over two decades of hands-on experience, we get the job done right the first time. Contact us today for a estimate!

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1 neighbors recently requested a quote
Recommended by81%of homeowners
Dolloff Lawncare
3.1(
17
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For BusinessExcavation - Major Grading or Resloping+2 more

Serving Andover, NH and surrounding areas

Approved

In business since 2002

Customers say: Quick response

"Even though Dolloff Lawncare was the ONLY business that responded to my request for services, Mr. Dolloff was very professional, kept in constant communication, came when promised and did a fantastic job of completing my project. He will also follow up occasionally to ensure that the job was finished. Not impressed with the other two companies NOT responding in any way."
7 neighbors recently requested a quote
Recommended by90%of homeowners
C&L Cass Construction
2.8(
2
)
Building Site - Preparation and ClearingExcavation - Major Grading or Resloping

Serving Andover, NH and surrounding areas

Approved

Small jobs welcome

Offers commercial services

Customers say: Quick response

"Chris worked with my schedule to get a foundation in and also fixed up my driveways, made great suggestions. He showed up and completed the work exactly as he promised and kept the site tidy all through the project. A pleasure to work with!"
8 neighbors recently requested a quote
Recommended by100%of homeowners
Jenna
New to Angi
Landscape - Minor Grading or Resloping

Serving Andover, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

We're a hardworking independent local team that takes pride in providing reliable, affordable home improvement and property maintenance services. We believe in showing up on time, communicating clearly, treating every home with respect, and leaving every job cleaner than we found it.\n\nWhether you need help with furniture assembly, painting, lawn care, general handyman projects, cleaning, or home maintenance, we have experienced team members ready to help. For projects that require licensed electrical work, we work with a licensed electrician to ensure the job is completed safely and professionally.\nOur goal is simple: quality work, fair pricing, and satisfied customers. We understand your time is valuable, so we work efficiently while paying attention to the details that matter.

Yager Transportation & Excavation
New to Angi
Excavation - Major Grading or ReslopingLandscape - Minor Grading or Resloping

Serving Andover, NH and surrounding areas

Approved

In business since 1997

Free estimates

Offers commercial services

We are dedicated to providing our clients with the very best in excavation and building site services. We specialize in residential and commercial services and take pride in the attention to detail put into each of the projects we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, and guarantee your satisfaction.

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Excavating FAQs, answered by experts

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.

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. 

The digging depth will depend on the size of the trencher you use. Even smaller units can dig up to 4 feet deep, which is plenty for a DIY job. However, much larger trenchers can reach a depth of 18 feet and are better used by a team of pro contractors, not a single DIYer. As with all home improvement projects, use the right tool for the job and proceed with caution.

Most states do not require excavation companies to hold specific licenses, but many require at least a contractor’s license. Additionally, heavy equipment operators require a special commercial equipment license to operate machinery required for excavation. You can use Angi’s contractor licensing tool to confirm that an excavation company you’re considering hiring is fully licensed. You should also make sure that the excavation team is fully insured before allowing them to work on your property.

The best type of soil to build on is a mixture of sand and clay, known as loam soil. Loam soil has the best combination of these soil types to build a foundation on. The clay particles help with water retention, so it won’t erode like sandy soil might, and the sandy particles help with drainage, so you won’t see unsafe soil expansion or have an increased risk of leaks from water sitting against your foundation.

The Andover, NH homeowners’ guide to excavation services

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