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TRUSTED BY DANBURY, NH HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon12
    Verified excavation services reviews

Top-Rated Excavation pros in Danbury - Updated Nov 2026

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

Serving Danbury, 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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2 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 Danbury, 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 Danbury, 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
Yager Transportation & Excavation
New to Angi
Excavation - Major Grading or ReslopingLandscape - Minor Grading or Resloping

Serving Danbury, 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

Trenchers can dig holes as narrow as 4 inches or as wide as 4 feet. Check the specifications of the trencher you rent or buy to determine how wide it will cut into the landscape. Better yet, let the excavation company know how wide you’d like the trench to be, and they can help you choose the right trencher for the job (or do it for you).

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.

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.

How deep your septic system needs to be into the ground depends on several factors. In extremely cold environments, the tank needs to rest below the maximum frost line, which can be up to six or eight feet deep. The standard burying depth for most systems is between a few inches and four feet below ground level. Depth can also depend on the slope of the landscaping and other property variables. 

A joint utility trench, or joint trench, is a long, buried ditch on a property that contains two or more utility lines rather than running the lines in multiple trenches. Some utilities, like gas and electric or electric and communication lines, are better suited to joint trenching, while others, like water and sewer, are not allowed to be in the same trench.

The Danbury, NH homeowners’ guide to excavation services

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