Company lists · Data refreshed September 2026

Top 23 Environmental consulting companies based in Chicago, United States

Name: Environmental consulting companies based in Chicago, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 58 companies tracked

RevenueBase identified 58 environmental consulting companies headquartered in Chicago, United States as of September 2026 and tracks 789 professional contacts across them, including 371 with verified work emails. Houston is the largest hub.

This list covers environmental consulting companies headquartered in Chicago, 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 19, 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 19, 2026 86% judged on-target in blind review

58Companies

789Contacts tracked

371Verified emails

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The 23 largest environmental consulting companies based in Chicago, United States

Ranked by team size

Top 23 of 58 environmental consulting companies based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consulting companies: 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	BBJ Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	97 contacts →
	Partial evidence “BBJ provides clients with solutions to environmental, health and safety problems.” Source: RevenueBase Database · checked Sep 19, 2026
2	Environmental Design International INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	68 contacts →
	Partial evidence “Clients can trust Environmental Design International inc.(EDI) to be responsive, demonstrate technical excellence, adhere to the demands of budgets and schedules, and offer…” Source: RevenueBase Database · checked Sep 19, 2026
3	WRD Environmental	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	64 contacts →
	Partial evidence “WRD Environmental helps organizations committed to sustainability realize their vision.” Source: RevenueBase Database · checked Sep 19, 2026
4	Carnow, Conibear & Assoc., LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	52 contacts →
	Indirect evidence “Carnow, Conibear & Assoc, Ltd.(Carnow Conibear), a minority-owned, woman-owned and veteran-owned business, was established in 1975.” Source: RevenueBase Database · checked Sep 19, 2026
5	Aeterra, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	43 contacts →
	Strong evidence “Aeterra is a full-service environmental and sustainability consulting firm that provides operating businesses and their owners with meaningful, practical, business-focused advice.” Source: RevenueBase Database · checked Sep 19, 2026
6	Carbon Solutions Group	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	42 contacts →
	Indirect evidence “Carbon Solutions Group was founded in Chicago, Illinois, in 2006.” Source: RevenueBase Database · checked Sep 19, 2026
7	Greenprint Partners	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	41 contacts →
	Strong evidence “Greenprint Partners is an award-winning consulting firm specializing in community-centered environmental infrastructure.” Source: RevenueBase Database · checked Sep 19, 2026
8	Specialty Consulting, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	51-200	37 contacts →
	Partial evidence “Specialty Consulting, Inc.(SPC) is a Hispanic–owned, infrastructure engineering and scientific consulting firm based in Chicago.” Source: RevenueBase Database · checked Sep 19, 2026
9	SRS Sustainment And Restoration Services	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	34 contacts →
	Indirect evidence “SRS provides engineering, science, and construction services to deliver sustainable facility design and construction including the restoration of previously used sites for…” Source: RevenueBase Database · checked Sep 19, 2026
10	Gabriel Environmental Services	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	28 contacts →
	Strong evidence “Gabriel Environmental Services is a multi-disciplinary environmental consulting firm headquartered just northwest of downtown Chicago.” Source: RevenueBase Database · checked Sep 19, 2026
11	RHP Risk Management INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
12	Callan Consulting Engineers, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Partial evidence “Our Team, Your Building - It’s a Perfect Fit At Callan Consulting Engineers, we provide professional engineering guidance from project inception to post-occupancy, including…” Source: RevenueBase Database · checked Sep 19, 2026
13	Carlson Environmental, A Nova Group, GBC Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	17 contacts →
	Partial evidence “Carlson Environmental, a Nova Group, GBC Company, was originally founded in 1988 by Dr.” Source: RevenueBase Database · checked Sep 19, 2026
14	Nijman Franzetti, LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	15 contacts →
	Partial evidence “We are a boutique environmental law firm representing corporate, municipal and individual clients regarding water, waste and air issues in areas of compliance counseling…” Source: RevenueBase Database · checked Sep 19, 2026
15	Strategic Growth Consulting, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	13 contacts →
	Partial evidence “Strategic Growth Consulting helps small to medium sized professional service companies identify, plan and execute growth strategies bringing over 30 years of experience in the…” Source: RevenueBase Database · checked Sep 19, 2026
16	EPS Environmental Services, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	10 contacts →
	Partial evidence “Since its incorporation in 1992, EPS Environmental has provided a broad range of environmental services, including thousands of property assessments, several thousand Phase II…” Source: RevenueBase Database · checked Sep 19, 2026
17	Husarch	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	9 contacts →
	Indirect evidence “HUSARCH collaborates with architectural, energy, and construction industry leaders to develop actionable, data driven solutions.” Source: RevenueBase Database · checked Sep 19, 2026
18	Inova Energy Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	7 contacts →
	Partial evidence “Inova Energy Group is a certified WBE offering management consulting, strategic planning, and project delivery solutions in the areas of energy and sustainability.” Source: RevenueBase Database · checked Sep 19, 2026
19	The Astor Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “The Astor Company opened its doors almost 20 years ago as a cardboard recycling company, beginning a journey of continuous adaptation and evolution which today finds a world-class…” Source: RevenueBase Database · checked Sep 19, 2026
20	Environmental Group Services Limited Egsl	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	11-50	4 contacts →
	Strong evidence “Environmental Group Services, Ltd.(EGSL) is a full service environmental engineering, training and consulting company located in Chicago, Illinois.” Source: RevenueBase Database · checked Sep 19, 2026
21	Cadenza Environmental LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Strong evidence “Environmental Engineering and Consulting Services” Source: RevenueBase Database · checked Sep 19, 2026
22	Futurity	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Indirect evidence “Our landscapes inspire and invite exploration and function to address the impacts of climate change.” Source: RevenueBase Database · checked Sep 19, 2026
23	Constructive Approaches, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 19, 2026	1-10	1 contacts →
	Strong evidence “Constructive Approaches is a consulting firm focused on helping clients make informed choices that minimize environmental impact in construction projects and business operations.” Source: RevenueBase Database · checked Sep 19, 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: environmental consulting companies. 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 environmental consulting companies.
Partial evidence: Its own public description names part of environmental consulting companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consulting companies. 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 23 of 58 environmental consulting companies based in Chicago, United States

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Environmental consulting companies based in Chicago, United States at a glance

As of Sep 19, 2026

47.0%Verified-email coverage

13.6Average contacts per company

11-50Median size (employees)

243.1%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Chicago, so it is reported there. Company counts and contact totals on this page are exact for Chicago, over 58 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 environmental consulting companies, 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 Chicago, United States whose own description of what they do matches “environmental consulting companies”. 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 environmental consulting companies), 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 environmental consulting companies, and records with no verified work email. Companies headquartered outside Chicago 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, 371 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 19, 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.

Environmental consulting companies by metro in the United States

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 environmental consulting companies, 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 environmental consulting companies are there based in Chicago, United States?

RevenueBase identified 58 environmental consulting companies headquartered in Chicago, 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?

BBJ Group, headquartered in Chicago, tops this list with the largest team on record.

Which city has the most environmental consulting companies?

Houston leads with 141 headquartered companies, followed by New York (89) and Seattle (66).

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 371 verified decision-maker contacts tracked across these 58 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 19, 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.