Welcome to National Underground Group, formerly the Hoffman Southwest family of companies.

We are the nation’s leading provider of underground infrastructure solutions. We are proud to be keeping our nation’s communities safe and healthy with industry-leading services and technologies for the assessment, maintenance, and protection of underground infrastructure.

A brand new National Underground Group website is currently under construction and is coming soon!

To explore the different members of the National Underground Group, please visit the links below.

If you would like to reach out to us, please fill out the form below: