Company lists · Data refreshed September 2026

Top 25 Facility compliance consulting firms based in the United States

Name: Facility compliance consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 1,982 companies tracked

RevenueBase identified 1,982 facility compliance consulting firms headquartered in the United States as of September 2026 and tracks 22,908 professional contacts across them, including 9,359 with verified work emails. New York is the largest hub.

This list covers facility compliance consulting firms headquartered in the 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, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

1,982Companies

22,908Contacts tracked

9,359Verified emails

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The 25 largest facility compliance consulting firms based in the United States

Ranked by team size

Top 25 of 1,982 facility compliance consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to facility compliance consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Ips-Integrated Project Services	Partial evidence	Blue Bell, PA, United StatesHQ checked Sep 28, 2026	1,001-5,000	3,577 contacts →
	Partial evidence “IPS, a Berkshire Hathaway company, is a global leader in technical consulting, architecture, engineering, procurement, construction management, commissioning, qualification…” Source: RevenueBase Database · checked Sep 28, 2026
2	Telgian	Partial evidence	Phoenix, AZ, United StatesHQ checked Sep 28, 2026	201-500	354 contacts →
	Partial evidence “Since 1985, Telgian has served as a trusted partner to clients around the globe, providing innovative fire, security, life safety consulting and engineering/design services…” Source: RevenueBase Database · checked Sep 28, 2026
3	Alliance Environmental Group, LLC	Indirect evidence	Azusa, CA, United StatesHQ checked Sep 28, 2026	501-1,000	254 contacts →
	Indirect evidence “Alliance is one of the most experienced and trusted environmental contractors in California.” Source: RevenueBase Database · checked Sep 28, 2026
4	Hyde Engineering Consulting	Partial evidence	Louisville, CO, United StatesHQ checked Sep 28, 2026	201-500	253 contacts →
	Partial evidence “Hyde E+C is an international engineering consulting firm that helps companies operate more efficiently, get products to market more quickly, meet regulatory requirements more…” Source: RevenueBase Database · checked Sep 28, 2026
5	August Mack Environmental, INC	Indirect evidence	Indianapolis, IN, United StatesHQ checked Sep 28, 2026	51-200	210 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
6	Hillmann Consulting, LLC	Indirect evidence	Union, NJ, United StatesHQ checked Sep 28, 2026	201-500	209 contacts →
	Indirect evidence “Hillmann has been a well-recognized leader in the Environmental Health & Safety, Due Diligence & Remediation Management, and Construction Services industries since 1985.” Source: RevenueBase Database · checked Sep 28, 2026
7	GMR	Partial evidence	Heath, TX, United StatesHQ checked Sep 28, 2026	51-200	179 contacts →
	Partial evidence “GMR has become known as the "Industry Best Practice" for helping facilities document existing conditions, prepare for improvements, and minimize risk.” Source: RevenueBase Database · checked Sep 28, 2026
8	Milrose Consultants	Strong evidence	New York, NY, United StatesHQ checked Sep 28, 2026	201-500	174 contacts →
	Strong evidence “Milrose is the nation’s premier building lifecycle firm, offering fully integrated services in Permitting, Code Consulting, Municipal Compliance, Special Inspections…” Source: RevenueBase Database · checked Sep 28, 2026
9	Forensic Analytical Consulting Services, INC	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 28, 2026	51-200	172 contacts →
	Indirect evidence “With a staff of over 150 employees in the San Francisco, Sacramento, Los Angeles, San Diego, Modesto, Bakersfield, Fresno, Portland, Chicago, and Grand Rapids offices, Forensic…” Source: RevenueBase Database · checked Sep 28, 2026
10	Environmental Health & Engineering	Indirect evidence	Newton, MA, United StatesHQ checked Sep 28, 2026	51-200	170 contacts →
	Indirect evidence “EH & E delivers integrated environmental, engineering, and health and safety solutions that help businesses and institutions safeguard their assets, improve operations and boost…” Source: RevenueBase Database · checked Sep 28, 2026
11	Qualspec	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 28, 2026	1,001-5,000	149 contacts →
	Indirect evidence “QualSpec is a leading industrial inspection firm headquartered in Houston, Texas.” Source: RevenueBase Database · checked Sep 28, 2026
12	Mostardi Platt	Indirect evidence	Elmhurst, IL, United StatesHQ checked Sep 28, 2026	51-200	140 contacts →
	Indirect evidence “Since the passage of original environmental legislation nearly four decades ago, both private and public industry have turned to Mostardi Platt for guidance in complying with air…” Source: RevenueBase Database · checked Sep 28, 2026
13	Ensolum, LLC	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 28, 2026	51-200	136 contacts →
	Indirect evidence “OUR MISSION is to combine sustainable environmental solutions with forward-thinking, cost-effective, innovative, and value-added technologies that balance our clients’ economic…” Source: RevenueBase Database · checked Sep 28, 2026
14	Action Environmental	Indirect evidence	Birmingham, AL, United StatesHQ checked Sep 28, 2026	201-500	129 contacts →
	Indirect evidence “Action Environmental is an Environmental and Industrial Services Contractor headquartered in Birmingham, Alabama.” Source: RevenueBase Database · checked Sep 28, 2026
15	Rand Engineering & Architecture, DPC	Partial evidence	New York, NY, United StatesHQ checked Sep 28, 2026	51-200	126 contacts →
	Partial evidence “RAND Engineering & Architecture, DPC is an independently owned consulting firm serving owners, boards, property managers, architects, and institutions.” Source: RevenueBase Database · checked Sep 28, 2026
16	GFA International, INC	Partial evidence	Delray Beach, FL, United StatesHQ checked Sep 28, 2026	51-200	115 contacts →
	Partial evidence “GFA International, Inc.(GFA) is a full-service Engineering consulting organization providing Environmental Consulting, Geotechnical Engineering, Construction Materials Testing…” Source: RevenueBase Database · checked Sep 28, 2026
17	The EI Group, INC	Partial evidence	Morrisville, NC, United StatesHQ checked Sep 28, 2026	51-200	111 contacts →
	Partial evidence “The EI Group, Inc.(EI) is an environmental, health and safety consulting firm headquartered in Research Triangle Park, North Carolina, with branch offices strategically located…” Source: RevenueBase Database · checked Sep 28, 2026
18	Hart & Hickman, PC	Partial evidence	Charlotte, NC, United StatesHQ checked Sep 28, 2026	51-200	103 contacts →
	Partial evidence “Hart & Hickman PC provides environmental consulting services to commercial, industrial, and governmental clients throughout the Southeast US.” Source: RevenueBase Database · checked Sep 28, 2026
19	Medical Technology Associates, LLC	Partial evidence	Pinellas Park, FL, United StatesHQ checked Sep 28, 2026	201-500	98 contacts →
	Partial evidence “MTA is the largest single-source healthcare compliance company with over three decades of experience.” Source: RevenueBase Database · checked Sep 28, 2026
20	Chambers Group, INC	Partial evidence	Costa Mesa, CA, United StatesHQ checked Sep 28, 2026	51-200	98 contacts →
	Partial evidence “Public agencies and businesses have been relying on Chambers Group to keep them in compliance with applicable federal, state, and/or local environmental laws, regulations, and…” Source: RevenueBase Database · checked Sep 28, 2026
21	A-Tech Consulting, INC	Indirect evidence	Orange, CA, United StatesHQ checked Sep 28, 2026	51-200	97 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
22	BBJ Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	51-200	97 contacts →
	Indirect evidence “BBJ provides clients with solutions to environmental, health and safety problems.” Source: RevenueBase Database · checked Sep 28, 2026
23	EEC Environmental	Strong evidence	Orange, CA, United StatesHQ checked Sep 28, 2026	11-50	96 contacts →
	Strong evidence “EEC Environmental is a national environmental consulting firm that specializes in water, wastewater, stormwater, regulatory compliance, safety, and assessment and remediation of…” Source: RevenueBase Database · checked Sep 28, 2026
24	Alta Environmental And Infrastructure	Indirect evidence	Tempe, AZ, United StatesHQ checked Sep 28, 2026	51-200	93 contacts →
	Indirect evidence “At Alta Environmental & Infrastructure (Alta EI), we partner with clients to build and protect what matters most, delivering comprehensive engineering, environmental, and health &…” Source: RevenueBase Database · checked Sep 28, 2026
25	Yorke Engineering, LLC	Indirect evidence	San Juan Capistrano, CA, United StatesHQ checked Sep 28, 2026	51-200	92 contacts →
	Indirect evidence “Yorke Engineering, LLC (Yorke) was founded in 1996 and specializes in air quality, waste, storm water and industrial hygiene/safety services.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: facility compliance consulting firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names facility compliance consulting firms.
Partial evidence: Its own public description names part of facility compliance consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name facility compliance consulting firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,982 facility compliance consulting firms based in the United States

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Facility compliance consulting firms based in the United States at a glance

As of Sep 28, 2026

40.9%Verified-email coverage

11.6Average contacts per company

1-10Median size (employees)

3.5%Largest-city concentration · New York

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

1,205

11-50

614

51-200

128

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,982 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 facility compliance consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search 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 Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “facility compliance consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names facility compliance consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among facility compliance consulting firms, and records with no verified work email. Companies headquartered outside United States 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 its RevenueBase Smart Search 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, 9,359 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 28, 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.

Facility compliance consulting firms by metro

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names facility compliance consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many facility compliance consulting firms are there based in the United States?

RevenueBase identified 1,982 facility compliance consulting firms headquartered in the 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?

Ips-Integrated Project Services, headquartered in Blue Bell, tops this list with the largest team on record.

Which city has the most facility compliance consulting firms?

New York leads with 69 headquartered companies, followed by Houston (47) and Dallas (20).

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 9,359 verified decision-maker contacts tracked across these 1,982 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 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 Smart Search, 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.