O'Neil Construction

David O'Neil Construction, LLC is a growing excavation company serving Southern New Hampshire and the Monadnock Region. With over 20 years of experience in the industry, we are your one-stop-shop for all your excavation and site work needs. Our team is hard working, dedicated, and takes pride in providing top-quality service to our customers.

Our mission is to provide our customers with safe, high-quality construction services for all their residential and commercial excavation needs. We are committed to completing your project in a safe, professional, cost-effective, and timely manner. At David O'Neil Construction, LLC, we believe that quality isn't expensive - it's priceless!

Septic Systems & Private Sewer Lines

When buying a house, it's essential to inspect the septic system or private sewer line before making a purchase. At David O'Neil Construction, LLC, we offer video camera septic system inspections to help you understand the quality and integrity of the system you are purchasing. Our report can be used as leverage for your offer and can help prevent unexpected costs after the purchase.

We can also use our camera to locate many underground items, including piping, electric lines, and water lines. Our recent customer spent over a day trying to locate his septic tank with a shovel and plans. After learning about our services, we were able to locate the tank within 15 minutes.

Excavation Services

We offer a wide variety of excavation services for both residential and commercial projects. Our team can help you design and install new septic systems, create new driveways, and repair old ones. We offer both hard pac and asphalt grindings options, as well as loam, seed, and hay services.

At David O'Neil Construction, LLC, we can help you with all your underground utility needs, including foundation drains and French drains, water runoff and drainage solutions, and water line installation for your well, back flush, or dry well. Our team has the experience and expertise to handle all your excavation needs, big or small.

David O'Neil Construction, LLC - Company Profile

We are a fully licensed and insured excavation company serving the southwestern region of New Hampshire. Established in the early 90's, our founder, David, has the know-how when it comes to your project. With over 20 years of experience in the excavation field and 18 years prior in the carpentry and building trades, you are guaranteed to be satisfied.

Our fleet includes two Link-Belt Excavators, a Kubota Mini Excavator, two Mack dump trucks, a John Deere Backhoe, a Skid Steer, three company job trucks, and more. We are now located on Route 101 in Marlborough, New Hampshire, and we encourage customers (past, present, and future) to stop in.

At David O'Neil Construction, LLC, we strive to make your house a home. We offer premium products, exceptional and professional installations, and take pride in getting to know our customers. Our team works with the idea that every job site is our own, giving homeowners peace of mind that the project is done right the first time.