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Ernie's Excavating, Inc. of Littleton is, in a recent customer's words, "a small family-run business" — Ernie, his wife Laurie and the guys. That customer said the company replaced a large, antiquated septic system in Carlisle in March 2026, decommissioning the old system, installing a Presby system and building a large block retaining wall that holds the new leach field. The company says it has been in business 39 years, and on Google it holds 5 stars from 21 ratings. A recent customer said Laurie and Ernie replaced an old septic system with a new complicated system on a challenging lot, and suggested re-siting it from the architectural plans, after double-checking with the architect, to make the system less obtrusive. A recent customer with a septic replacement in Carlisle said Ernie and Laurie handled everything from obtaining the construction permits to final sign-off by the Carlisle Board of Health. A recent customer said Ernie filled and graded a new lawn area and shaped the edge going down into the trees. In a 2025 review, a customer whose family hired the company for a septic system at a house in Concord said Ernie installed a new tank, D-box and leaching field and connected two buildings and a laundry in 3 days. A 2025 customer said the company dug the foundation for a new addition, including new water and sewer lines, on time and on budget. A 2025 customer described a town-mandated waterline replacement with Laurie as project lead from estimate to town interaction to install. A 2025 customer installing a whole new septic said Laurie let them know well in advance when something was going to happen, and called Ernie adept at jockeying big equipment around in tight spaces. A 2024 customer who needed a new septic before closing on a house said Laurie kept them apprised every step of the way.
The team did an excellent job improving our wetland property. They were professional and considerate throughout the project, and we are very satisfied with the result. I would highly recommend them.
Ernie and Laurie did a fantastic job on my on-site septic system replacement in Carlisle MA. The work was completed quickly and within the established budget. They handled everything from obtaining the construction permits to final sign-off by the Carlisle Board of Health.
It was a pleasure to work with Laurie and Ernie! Communication was great, I was always in the loop, and they arrived when they said they would and did a great job replacing my septic system. The price was great too. I am completely happy with the job and highly recommend them!
Laurie and Ernie are terrific. They replaced our old septic system with a new complicated system on a challenging lot, and every aspect was handled professionally and thoughtfully from start to finish. They even suggested modifications and re-siting from the architectural plans—after double-checking with the architect—to make the system less obtrusive. We hadn’t thought to ask for that, but they raised the idea themselves and carried it out extremely well. On top of doing excellent work, they are genuinely great people. Replacing your septic system is no fun in any circumstance, but you can't do better than Ernie's.
Ernie did a fantastic job filling and grading a new lawn area for us. The company is very easy to work with and Ernie communicated well during the job to make sure we got the finished product we were looking for. The job came in on budget and on time. We love the way he shaped the edge going down into the trees, it looks like we have a park in our front yard. Thank you!
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1 change recorded — last scanned Oct 9, 2026.
Failed Title 5 system diagnosed and rebuilt4.1
Retaining wall work5.0
Trenching that left a bluestone patio intact3.9
Verified drainlayer license2.2