Len Cox & Sons

Len Cox and Sons Excavating is a family owned and operated company. Our company has been providing professional Excavation and Underground Utilities since 1969. We have grown to be one of Chicagolands most reliable and respected contractors. Our continued growth and success is directly related to our professional and dependable service to our customers. Second only to our clients, our reputation is most important.



We are fully equipped to handle all water main and sewer related excavation work. We have a fleet of trucks ready to be dispatched to your job.


Our expert team can install a range of underground utilities, including sewage systems, water mains and storm sewers.

Services that we offers

  • Underground Utilities
  • Retention/Detention Ponds
  • Site Preparation
  • Subdivision Development
  • Hydro Excavation
  • Clean Fill Dump Sites
  • Snow Removal

In order to stand the test of time, underground utilities need to be installed with the laser accuracy required for a quality system. Our state-of-the-art equipment and proven experience to handle any underground utility or drainage project enables our underground install experts to deliver exceptional results down to the smallest detail.

We specialize in:

  • Sanitary Gravity Sewers
  • Sanitary Sewer Force Mains
  • Sanitary Plumbing Stations
  • Water Mains and Appurtenances
  • Storm Sewers
  • Box Culverts
  • Storm Water Pumping Stations
  • Electrical Duct Banks and Conduits

We are trained and experienced with the multiple types of stormwater detention and retention systems in Illinois. Each detention system is designed and permitted by an engineer to operate within a defined set of parameters. We will prepare permitting and develop construction plans and provide project management and compliance verification on all projects. We also provide maintenance such as stormwater and health and safety oversight.

We provide residential and commercial grading services and site preparation services with our highly trained and experienced equipment operators using the best grading equipment available. We know the importance of grading your site correctly and timely. Our services include site preparation, land clearing, land leveling, pad foundations, landscape preparation, road work, backfill, driveway grading, sidewalk grading, job site clearing and site grading.

Len Cox and Sons is able to properly prepare the land and build the infrastructure for your subdivision project. No matter the size and scope of the job we can expertly plan every step - and then handle all of your site preparation needs from start to finish.

Hydro excavation is a type of vacuum excavation that takes the place of the traditional trench digging method of installing underground piping.

Hydro excavation gives allows for the versatility and flexibility not available with traditional methods and it is a process widely recognized as effective and safe. It also reduces surface damage to existing utilities, alleviates traffic disruption, it's less expensive for landscape restoration and it assist with reaching difficult sites.

Our hydro excavation services include:

  • Potholing/daylighting
  • Locating utilities
  • Trenching and excavating

We maintain a number of clean fill dump sites in our service area. This ensures that we can always dispose of clean fill for our customers regardless of weather conditions or the time of year. Our clean fill sites are maintained in a clean and tidy manner.

Don't let an unexpected winter storm catch your business off guard! We take a strategic approach to snow and ice management in order to keep your operations running smoothly, regardless of what the forecast holds. We're equipped to handle any commercial snow removal job, no matter how small or large. We help to control your commercial snow and ice removal costs by planning ahead and managing all aspects of winter weather events for prompt and reliable service.

our latest projects

Len Cox & Sons Excavating

Providing the Chicagoland area with professional excavating,
underground utilities, sewer and water and snow removal
services since 1969.

(815) 730-7700 or Contact Us

Estimates: estimating@lencoxandsons.com

Created by: Quinn Strategies