Business Details
28 Years
experience
Expert Excavation & Septic Services in Marlborough, NH
David O'Neil Construction has been a trusted name in excavation and septic system services since 1998. With over two decades of industry experience, we specialize in delivering safe, cost-effective solutions for residential and commercial clients across Southern New Hampshire and the Monadnock Region. Our team combines technical expertise with a commitment to quality, offering services ranging from septic system design and installation to comprehensive excavation projects.We maintain full licensing and insurance, ensuring compliance with all regulatory standards while prioritizing customer satisfaction. Our approach emphasizes transparency, with detailed project explanations and maintenance guidance to maximize system longevity. Backed by a fleet of modern equipment and a reputation for reliability, we take pride in treating every project as if it were our own, ensuring precision from initial consultation through final execution.
Services
Excavation Services
Septic Systems
Drainage Solutions
Driveway Repairs
Trucking Services
Details
- Year established: 1998
Highlights and features
- We offer 20+ years of excavation and septic system expertise
- Our team uses advanced techniques for proper drainage solutions
- Licensed septic installers with state certification
- Detailed project explanations and maintenance guidance provided
- Modern equipment fleet ensures efficient, precise execution
What people say
Top notch
Prompt and professional
Exceeded expectations
Highly recommend
Excellent service
Services
Septic Systems
We design and install durable septic systems using state-certified methods and local soil scientists. Our process includes test pit analysis, system planning, and proper material selection to ensure longevity. Customers receive detailed maintenance guidance to maximize system lifespan while avoiding costly repairs.
Excavation Services
Our excavation capabilities cover residential and commercial projects including foundation preparation, driveway construction, and land clearing. We utilize modern equipment and proper drainage techniques to create stable bases for long-term durability in all terrain conditions.
Drainage Solutions
We install comprehensive drainage systems including French drains, foundation drains, and culverts. Our methods use durable materials like rubber lining and perforated piping to prevent basement flooding and manage water runoff effectively across properties.
Driveway Repairs
We repair and construct driveways with proper base preparation and crown design for optimal water drainage. Services include grading, base material installation, and recommending maintenance schedules to extend driveway lifespan in New England's challenging climate.
Septic Inspections
Our video camera inspections identify septic system issues with precision. The process examines tanks, pipes, and leach fields to detect cracks or blockages, providing written reports that help buyers make informed decisions about septic system condition and potential repair needs.
People
David O'Neil
Owner
With 40+ years in construction, David founded the company in 1998 after managing carpentry operations for 17 years. He transitioned to excavation to control project timelines and now leads operations from Marlborough, NH.
Questions
What septic services do you offer?
We provide septic system design, installation, inspections, and repairs using state-certified methods and modern equipment.
Do you serve commercial properties?
Yes, we handle excavation and septic needs for both residential and commercial properties across Southern New Hampshire.
How do you handle drainage issues?
We install French drains, foundation drains, and culverts using durable materials to manage water runoff and prevent basement flooding.
What areas do you service?
We primarily serve Southern New Hampshire and the Monadnock Region, with experience across various terrain types.
Can you repair existing driveways?
Yes, we offer driveway repairs including grading, base restoration, and drainage improvements to extend lifespan in New England weather.
Are you licensed for septic work?
We hold state licensing for septic system installation and work with certified soil scientists for proper system design.
