Insights

Underground Focus Longstanding underground infrastructure contractor serving municipalities, utilities, government agencies, construction firms, and engineering firms across the U.S., presenting opportunities to expand service offerings in trenching, piping, and utility installation projects.

Family of Brands Multiple brands under one group (Pro-Pipe, Tri-State Utilities, Accumark, Pipe Vision, Benchmark) create cross-sell opportunities for complementary underground solutions and bundled service proposals.

Growth Readiness Revenue in the mid tens of millions with a lean employee base suggests agility to onboard projects quickly; potential fit for targeted RFPs and regional expansion of services to nearby municipalities and utilities.

Strategic Leadership Past CFO appointment indicates openness to financial discipline and scalable operations; engage finance-friendly proposals, project-based pricing, and long-term maintenance contracts.

Capital Ownership Acquisition by ORIX Capital Partners indicates backing from growth-focused owners, signaling readiness for larger, multi-site projects and potential for PE-led partnerships or joint ventures.

Similar companies to National Underground Group

National Underground Group Tech Stack

National Underground Group uses 8 technology products and services including QuickBooks, Linkedin Insight Tag, iCIMS, and more. Explore National Underground Group's tech stack below.

National Underground Group's Email Address Formats

National Underground Group uses at least 4 email formats:
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 August 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 August 2026, National Underground Group has approximately 52 employees across 2 continents, including North America and Europe. Key team members include Vice President And General Manager: Z. L., Small Business Owner: C. M. and 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 QuickBooks, Linkedin Insight Tag, iCIMS, AutoCAD, Microsoft SharePoint, Mimecast Secure Email Gateway, Google Cloud and Piwik PRO Core.

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

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