Company lists · Data refreshed September 2026

Top 25 Administrative consulting firms based in Irvine, United States

Name: Administrative 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 28, 2026 69 companies tracked

RevenueBase identified 69 company matches for administrative consulting firms associated with Irvine, United States as of September 2026 and tracks 1,084 professional contacts across them, including 493 with verified work emails. Across the United States, New York is the largest hub for this category (695 companies); Irvine has 69.

This list covers company matches for administrative consulting firms associated with Irvine, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 28, 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 RevenueBase SmartSearch · Exact Recorded Sep 28, 2026 How this list was built

69Companies

1,084Contacts tracked

493Verified emails

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The 25 largest administrative consulting firms based in Irvine, United States

Ranked by team size

Top 25 of 69 company matches for administrative consulting firms based in Irvine, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 28, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	LSA	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	201-500	332 contacts →
	Exact match “LSA is a diversified environmental, transportation, and community planning firm that evolved from a small consulting firm.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
2	Interwest Consulting Group	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	201-500	221 contacts →
	Exact match “Interwest specializes in providing professional and consulting services to public agencies across California, Nevada, Colorado, and beyond.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
3	EPD Solutions, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	51-200	64 contacts →
	Exact match “EPD was created to assist clients through the complex regulatory and interdisciplinary process required to bring projects to fruition in the most thoughtful manner.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
4	RJI Cpas	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	51-200	59 contacts →
	Exact match “RJI CPAs is a full-service accounting and consulting firm based in Irvine, California.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
5	Intueor Consulting, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	51-200	52 contacts →
	Exact match “Intueor specializes in Strategy, Operations & Business Productivity advisory work.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
6	Compassx Group	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	47 contacts →
	Exact match “CompassX is a local-model consulting firm headquartered in SoCal.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
7	Concannon Business Consulting	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	45 contacts →
	Exact match “When resources and knowledge are constrained, your team will feel the pressure and your business may be at-risk for delays, lost revenue, and lost trust internally and externally.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
8	MLC And Associates	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	38 contacts →
	Exact match “MLC and Associates is an award-winning, world-class management consulting firm, recognized for helping companies in every industry with business continuity, corporate performance…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
9	Pursue Health LLC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	51-200	37 contacts →
	Exact match “Pursue Health provides consulting and administrative services to various sectors within the healthcare industry to promote operation efficiency, an environment of regulatory…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
10	Connexus HUB	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	20 contacts →
	Exact match “Connexus Hub is a boutique business and technology advisory firm that specializes in CIO advisory, IT PMO support, and business transformation services, training, and operations…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
11	Mentor Global Consultants	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	16 contacts →
	Exact match “MENTOR is a management consulting firm that helps organizations to improve performance and reach their full potential, by offering a unique combination of business solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
12	ADDA	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	10 contacts →
	Exact match “ADDA is a consulting firm that offers HR, Payroll, Benefits Administration, and Talent solutions.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
13	Matrixpoint Consulting	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	9 contacts →
	Exact match “MatrixPoint Consulting helps brand executives in QSR, CPG, and retail grow through marketing they can measure.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
14	Xpand Legal Consulting, LLC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	7 contacts →
	Exact match “Xpand’s taking a fresh look at the processes and procedures that have dominated the legal administration space for decades and quickly finding there is plenty of opportunity to…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
15	Take Ctrl	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1-10	7 contacts →
	Exact match “Consulting - We provide business consulting to small businesses in the Orange County area.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
16	International Executive Consulting, LLC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1-10	5 contacts →
	Exact match “Your Vision, Our Expertise - A Prosperous Future Built Together At International Executive Consulting, we specialize in driving business transformation and organizational change…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
17	Copperpillar Consulting, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	5 contacts →
	Exact match “Copperpillar excels in the telecommunications industry with core services that enable our clients to meet fast paced demands and deadlines.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
18	Logis Accounting & Finance Consulting Talent Search	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	5 contacts →
	Exact match “Our partners have more than 50 years of combined experience serving clients with top finance and accounting consulting and direct hire talent.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
19	Daneco Group INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1-10	5 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
20	Professional Corporate Consultants	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	201-500	4 contacts →
	Exact match “Professional Corporate Consultants is a full-service project consulting firm with a reputation for delivering customized solutions to meet the diverse needs of public and private…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
21	The Fantastic Labs	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	4 contacts →
	Exact match “Empower Your Business Potential with The Fantastic Labs!” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
22	Growthport Partners, INC	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	3 contacts →
	Exact match “The legal community has priced itself out of the mid-sized business market and it has no incentive to offer, let alone deliver, quality preventive legal services either in the…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
23	Transparity Group	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “Who we are The Transparity Group is a team of trusted partners providing consulting services to individuals and small business in the areas of Career/Executive Coaching…” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
24	Exxeed	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	1-10	3 contacts →
	Exact match “EXXEED delivers Smart People Solutions™ that help leaders and their organizations grow and transform.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase
25	AIA	Exact match	Irvine, CA, United StatesHQ recorded Sep 28, 2026	11-50	3 contacts →
	Exact match “AIA Ancile Insurance Agency is a full service consulting firm headquartered in Irvine, California.” Recorded in the RevenueBase company graph · Sep 28, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “administrative consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 69 administrative consulting firms based in Irvine, United States

See the full list, filter by size, metro and specialty, and access 493 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 28, 2026

45.5%Verified-email coverage

15.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

Email recency for this list is measured across the whole United States list rather than for Irvine, so it is reported there. Company counts and contact totals on this page are exact for Irvine, over 69 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

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: Company records associated with Irvine, United States whose business descriptions match “administrative consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 493 professional contacts with verified work emails across the full matched dataset. 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 28, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Administrative consulting firms by metro in the United States

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “administrative consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 69 company matches for administrative consulting firms associated with Irvine, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

LSA tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most administrative consulting firms?

New York leads the United States with 695 company records, followed by Washington (560) and Atlanta (452). Irvine has 69.

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 493 professional contacts with verified work emails tracked across these 69 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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.