Company lists · Data refreshed September 2026

Top 22 Infrastructure consulting firms based in Irvine, United States

Name: Infrastructure consulting firms based in Irvine, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 3, 2026 71 companies tracked

RevenueBase identified 71 infrastructure consulting firms headquartered in Irvine, United States as of September 2026 and tracks 3,318 professional contacts across them, including 1,766 with verified work emails. New York is the largest hub.

This list covers infrastructure consulting firms headquartered in Irvine, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row Match evidence on every row Refreshed Sep 3, 2026 86% judged on-target in blind review

71Companies

3,318Contacts tracked

1,766Verified emails

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The 22 largest infrastructure consulting firms based in Irvine, United States

Ranked by team size

Top 22 of 71 infrastructure consulting firms based in Irvine, United States, ranked by team size, largest first. Data refreshed Sep 3, 2026. Evidence rates how directly each company's own description names infrastructure consulting firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#	Company	Headquarters	Employees	Contacts
1	Shimmick CorporationPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	753
	“At Shimmick (NASDAQ: SHIM), we’re shaping the future of sustainable infrastructure through innovative solutions that advance communities and protect our environment.” Source: company website · checked Sep 3, 2026
2	IDS Group, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	203
	“IDS is an award-winning engineering and architectural firm offering multidisciplinary consulting services through our staff of 90 professionals.” Source: company website · checked Sep 3, 2026
3	RBF Consulting, A Company Of Michael Baker InternationalPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	1,001-5,000	177
	“RBF Consulting, a Company of Michael Baker International, LLC, is one of the Nation's leading civil engineering, design, planning, surveying and construction management firms…” Source: company website · checked Sep 3, 2026
4	EPD Solutions, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	62
	“EPD was created to assist clients through the complex regulatory and interdisciplinary process required to bring projects to fruition in the most thoughtful manner.” Source: company website · checked Sep 3, 2026
5	VA Consulting, Inc., NOW StantecPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	60
	“VA Consulting has joined Stantec, an architecture and engineering firm with more than creative team members across North America and the world.” Source: company website · checked Sep 3, 2026
6	Advantec Consulting Engineers, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	48
	“At ADVANTEC Consulting Engineers, we are driven by a shared commitment to shaping smarter, safer, and more connected communities.” Source: company website · checked Sep 3, 2026
7	AKM Consulting EngineersPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	48
	“Based in Irvine, California, AKM Consulting Engineers is a multidisciplinary firm providing expert engineering solutions to municipalities, public agencies, and state and federal…” Source: company website · checked Sep 3, 2026
8	Linscott, LAW & Greenspan, EngineersIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	37
	“Linscott, Law & Greenspan, Engineers (LLG) provides transportation planning, traffic engineering and parking consultation services.” Source: company website · checked Sep 3, 2026
9	C&v Consulting, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	37
	Source: company website · checked Sep 3, 2026
10	National Engineering & Consulting, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	20
	“National Engineering and Consulting, Inc.” Source: company website · checked Sep 3, 2026
11	Moote Companies LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	19
	“Moote Companies was established from the foundations of The Moote Group which was started in 1974.” Source: company website · checked Sep 3, 2026
12	SGE Consulting EngineersIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	19
	“Established in 1992, S.” Source: company website · checked Sep 3, 2026
13	Lean Technology CorporationIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	17
	“Lean Technology Corporation (formerly Lean Photometrics) has over 20 years of experience in Engineering Design, CM Electrical Inspection, Design-Bid-Build, and Airfield and…” Source: company website · checked Sep 3, 2026
14	Exyion, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	17
	“Exyion prides itself in providing highly experienced Utility Industry Consultants with years of experience in many areas of the Utility Business.” Source: company website · checked Sep 3, 2026
15	OMB Electrical Engineers, INCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	51-200	17
	“LSW Engineers, located in Phoenix AZ has been providing Mechanical, Electrical, Plumbing, Technology and Commissioning Services for over 75 years.” Source: company website · checked Sep 3, 2026
16	TJW Engineering, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	16
	“TJW Engineering, Inc.(TJW), a California Corporation, is an engineering consulting firm that specializes in traffic engineering and transportation planning design and analysis.” Source: company website · checked Sep 3, 2026
17	N2w Engineering, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	16
	“We’re redefining what it means to partner with a consulting engineering firm.” Source: company website · checked Sep 3, 2026
18	Infrastrategies LLCIndirect evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	12
	“InfraStrategies is built on the idea that experience and innovation are critical ingredients in improving mobility outcomes.” Source: company website · checked Sep 3, 2026
19	Kapstone PlanningPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	1-10	10
	“Urban planning and operations consulting firm based in Orange County, CA.” Source: company website · checked Sep 3, 2026
20	Wilson Mikami CorporationPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	11-50	9
	“Wilson Mikami Corporation is a private Civil Engineering consulting firm established in 2004 and located in the City of Irvine, California.” Source: company website · checked Sep 3, 2026
21	Dopudja & Wells Consulting, INCPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	1-10	7
	“Dopudja & Wells Consulting, Inc, is a firm specifically focused in the water and wastewater utility sector.” Source: company website · checked Sep 3, 2026
22	Kreuzer Consulting Group KCGPartial evidence	Irvine, CA, United StatesHQ checked Sep 3, 2026	1-10	7
	“The Kreuzer Consulting Group (KCG) is a California corporation.” Source: company website · checked Sep 3, 2026

Showing 22 of 71 infrastructure consulting firms based in Irvine, United States

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Infrastructure consulting firms based in Irvine, United States at a glance

As of Sep 3, 2026

11-50Median size (employees)

New YorkLargest hub · 306 HQs

Contacts with mobile numbers

Sep 3, 2026Data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 71 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among infrastructure consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Irvine, United States whose own description of what they do matches “infrastructure consulting firms”. Matching reads each company's description, not its industry code or its name.
What we exclude: Companies whose own description does not clearly place them among infrastructure consulting firms, and records with no verified work email. Companies headquartered outside Irvine are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,766 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Infrastructure consulting firms by metro in the United States

Frequently asked

How many infrastructure consulting firms are there based in Irvine, United States?

RevenueBase identified 71 infrastructure consulting firms headquartered in Irvine, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Shimmick Corporation, headquartered in Irvine, tops this list with the largest team on record.

Which city has the most infrastructure consulting firms?

New York leads with 306 headquartered companies, followed by Houston (293) and Washington (158).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,766 verified decision-maker contacts tracked across these 71 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.