TDD Earth Tech, Inc. performs all phases of Commercial and Residential trucking and hauling, excavation and drainage work. From underground utilities to lot clearing, drainage and road construction, we look forward to being your provider for excavation services.
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Brandon H.


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TDD relocated a waterline for me in Londonderry at my residence. There is a home being built on a lot that used to be owned by my family and was sold to a builder that the waterline to my residence ran across. After both the builder and his attorney indicated numerous times to the town that the waterline could not be relocated and that I would have to drill a well and install a new septic, with the help of Pennichuck Water, the relocation of the waterline was accomplished. So TDD Earth was under the gun to get this done quickly as there was a court order in place to have my waterline disconnected in a short period of time. TDD Earth quickly fit me into their schedule. Went beyond what the town of Londonderry required be done. They posted all necessary bonds required, one of the other companies I contacted for an estimate wanted me to post the bonds. They were very professional and did a great job. Tommy, the owner was very accessible and was out on the job site himself performing some of the work. They kept me fully informed of when my water would be temporarily shut off and when it would be turned back on. They did exactly what I asked them to do on my property and the final price although they worked about another day longer on the project came in at the estimated amount. I would highly recommend them. Their estimates also came in a little lower than the other estimates I was provided and in the case of one estimate, substantially lower. I would highly recommend them again and utilize their services again if needed based upon the following factors: Honesty, accessibility to the owner - Tommy, performing the work on budget, finish work of the project, and going the extra mile to make certain the work exceeded the town of Londonderry's expectations.

Dan B.


Provided by

TDD has done various jobs in my yard, from leveling, to stump pulling to digging footings for a deck. The work has always been top-notch and on target both for time and price. Will always have their number in my phone for future work and would recommend them to a friend.

Roy S.


Provided by

When I needed to put in a 250 foot road and a barn I gave TDD a call They came right over and gave me a quote. Then the trucks starting rolling in with tons of rock to build up a road with a rock retaining wall on one side 10 feet high. They brought in huge boulders and set them perfectly to form the wall and a solid road. Next was the barn and first the land had to be raised and good material placed where the barn foundation would sit. When it came time to set the beams for the clear span garage once again Tom from TDD was there with a huge excavator to lift the LVL's perfectly into place. After that they set the underground electrical conduit under the road. It was like a one stop shop for all my excavation needs. The best part was that I got a great job done at a great price and they delivered exactly what we agreed to and was promised at the start. Next time I need something done I am calling TDD first.

Pro M.


Provided by

TDD Earth has been in my neighborhood many times doing various jobs to include clearing trees and brush, leveling land , moving rock, digging sono tubes , moving bushes and spreading loam. They arrived with the best heavy equipment to do the job correctly. I have nothing but great things to say, the price was right, the work was exceptional, they arrived when they said they were going to, and did exactly what they said they were going to do. The guys were friendly and courteous and left my yard better than it was when they started.

Bob M.


Provided by YPmobile
Satisfied. customers

I had TDD do a concrete foundation and floor for me. They also tore down as old garage and hauled it out for me. They did what they promised in a timely and professional manner and i would recommend them to my friends.

More Business Info

24 Hour Emergency Service

BBB Rating
BBB Rating and Accreditation information may be delayed up to a week.
Regular Hours
Mon - Fri:
  • Sewer Main Clearing, Septic Tanks
  • Backhoes
  • Bulldozers
  • Graders
  • Sewer Lines & Sewer Systems
Payment method
all major credit cards, check

Fully Insured


TDD Earth Tech Inc.

Social Links
Drainage Contractors, Building Contractors, Demolition Contractors, Excavation Contractors, General Contractors, Road Building Contractors, Septic Tanks & Systems, Sewer Cleaners & Repairers, Sewer Contractors
Other Information

Services: Sewer Main Clearing, Septic Tanks