Insights

Strategic Focus Strengthen outreach to municipalities, utilities and government agencies that require underground infrastructure maintenance and modernization, leveraging National Underground Group's long-standing experience since 1947 and its family of specialized brands.

Integrated Capabilities Highlight opportunities that combine Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision and Benchmark services for end-to-end underground solutions, allowing cross-sell to existing clients across construction, engineering and public sector projects.

Regional Footprint Target California and national accounts with a proven track record and scalable service offerings, emphasizing local project execution capabilities and compliance for public works and utilities projects.

Financial Credibility Leverage mid-market revenue profile and recent leadership stability, including CFO appointment, to position National Underground Group as a financially solid partner for larger project bids and multi-year infrastructure programs.

Tech-Driven Differentiation Emphasize the use of advanced design and field tools in the tech stack such as Bentley MicroStation, Carlson Survey and Google Cloud to support complex underground projects, risk mitigation, and efficient project delivery as a competitive differentiator.

Similar companies to National Underground Group

National Underground Group Tech Stack

National Underground Group uses 8 technology products and services including iCIMS, jsDelivr, Microsoft SharePoint, and more. Explore National Underground Group's tech stack below.

  • iCIMS
    Applicant Tracking Systems
  • jsDelivr
    Content Delivery Network
  • Microsoft SharePoint
    Content Management System
  • Carlson Survey
    Design
  • ADP HRMS
    Human Resource Management System
  • Microsoft Word
    Office Suites
  • Microsoft Windows
    Operating Systems
  • Magnific Popup
    Web Tools And Plugins

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

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.

How much revenue does National Underground Group generate?

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As of July 2026, National Underground Group's annual revenue is estimated to be $25M - $50M.

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 July 2026, National Underground Group has approximately 51 employees across 2 continents, including North AmericaEurope. Key team members include Vice President And General Manager: Z. L.Small Business Owner: C. M.Owner-Operator: N. 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 iCIMSjsDelivrMicrosoft SharePointCarlson SurveyADP HRMSMicrosoft WordMicrosoft WindowsMagnific Popup.

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 logo

National Underground Group

ConstructionCalifornia, United States51-200 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.

Section iconCompany Overview

Phone number
NAICS Code
23 - Construction
Employees
51-200

Section iconFunding & Financials

  • $25M - $50M

    National Underground Group's revenue is estimated to be in the range of $25M - $50M

Section iconFunding & Financials

  • $25M - $50M

    National Underground Group's revenue is estimated to be in the range of $25M - $50M

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