Insights

Strong Industry Presence National Underground Group has a longstanding history in the construction sector since 1947, with a focus on underground infrastructure, making it a reliable partner for municipalities, utilities, and government agencies seeking experienced service providers.

Recent Leadership Appointment The hiring of a new Chief Financial Officer in 2021 indicates ongoing corporate growth and professionalization, signaling opportunities to engage with the company on upcoming infrastructure projects and potential financial collaborations.

Acquisition Backing Being acquired by ORIX Capital Partners in 2017 provides financial stability and growth potential, suggesting the company may be expanding its services or undertaking large-scale projects suitable for strategic partnerships.

Moderate Revenue Range With annual revenues between 10 to 25 million dollars and a relatively focused employee base, there may be opportunities to offer specialized construction technologies, equipment, or project management solutions tailored to mid-sized infrastructure projects.

Technology Stack & Innovation Utilization of advanced tools like AutoCAD, Google Cloud, and HubSpot demonstrates a commitment to leveraging technology for efficient operations, presenting potential sales opportunities in digital transformation, project management software, or construction tech solutions.

Similar companies to National Underground Group

National Underground Group Tech Stack

National Underground Group uses 8 technology products and services including AutoCAD, Open Graph, RSS, and more. Explore National Underground Group's tech stack below.

  • AutoCAD
    Cad & Graphics
  • Open Graph
    Content Management System
  • RSS
    Content Management System
  • MySQL
    Database
  • Google Cloud
    Infrastructure As A Service
  • HubSpot
    Marketing Automation
  • PHP
    Programming Languages
  • Nginx
    Web Servers

National Underground Group's Email Address Formats

National Underground Group uses at least 2 format(s):
National Underground Group Email FormatsExamplePercentage
First.Last@hswcorp.comJohn.Doe@hswcorp.com
63%
FLast@hswcorp.comJDoe@hswcorp.com
34%
FirstLast@hswcorp.comJohnDoe@hswcorp.com
3%
First.Last@nationalu.comJohn.Doe@nationalu.com
100%

Frequently Asked Questions

Where is National Underground Group's headquarters located?

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National Underground Group's main headquarters is located at 47 Discovery Suite 250 Irvine, California 92618 United States. The company has employees across 2 continents, including North AmericaEurope.

What is National Underground Group's phone number?

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You can contact National Underground Group's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is National Underground Group's official website and social media links?

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National Underground Group's official website is nationalu.com and has social profiles on LinkedIn.

What is National Underground Group's NAICS code?

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National Underground Group's NAICS code is 23 - Construction.

How many employees does National Underground Group have currently?

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As of February 2026, National Underground Group has approximately 53 employees across 2 continents, including North AmericaEurope. Key team members include Vice President Of Risk: D. H.Vice President And General Manager: Z. L.Small Business Owner: C. M.. Explore National Underground Group's employee directory with LeadIQ.

What industry does National Underground Group belong to?

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National Underground Group operates in the Construction industry.

What technology does National Underground Group use?

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National Underground Group's tech stack includes AutoCADOpen GraphRSSMySQLGoogle CloudHubSpotPHPNginx.

What is National Underground Group's email format?

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National Underground Group's email format typically follows the pattern of First.Last@hswcorp.com. Find more National Underground Group email formats with LeadIQ.

National Underground Group

ConstructionCalifornia, United States51-200 Employees

Since 1947, National Underground Group, formerly known as Hoffman Southwest Corp., has provided a full spectrum of services to maintain healthy underground infrastructures. Today, through our family of businesses, Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision and Benchmark, National Underground Group is focused on providing underground infrastructure solutions to municipalities, utilities, government agencies, construction companies and engineering firms throughout the U.S.

Section iconCompany Overview

Headquarters
47 Discovery Suite 250 Irvine, California 92618 United States
Phone number
NAICS Code
23 - Construction
Employees
51-200

Section iconFunding & Financials

  • $10M$25M

    National Underground Group's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    National Underground Group's revenue is estimated to be in the range of $10M$25M

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