National Underground Group

ConstructionCalifornia, United States11-50 Employees

National Underground Group is a construction-focused company dedicated to underground infrastructure. With roots dating back to 1947, it provides a full spectrum of services to maintain and upgrade underground networks and operates through a family of specialized brands including Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision, and Benchmark. Based in Irvine, California, the company serves municipalities, utilities, government agencies, construction firms, and engineering practices across the United States. It positions itself as an integrated solutions provider for planning, installation, maintenance, and modernization of underground systems. These activities place the company within the broader underground construction sector, serving a diverse set of public and private sector clients.

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