Company lists · Data refreshed September 2026

Top 22 Environmental economics consulting firms based in Chicago, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 47 companies tracked

RevenueBase identified 47 environmental economics consulting firms headquartered in Chicago, United States as of September 2026 and tracks 548 professional contacts across them, including 237 with verified work emails. Across the United States, Washington is the largest hub for this category (69 companies); Chicago has 47.

This list covers environmental economics consulting firms 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 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

47Companies

548Contacts tracked

237Verified emails

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The 22 largest environmental economics consulting firms based in Chicago, United States

Ranked by team size

Top 22 of 47 environmental economics consulting firms based in Chicago, United States, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to environmental economics 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	WRD Environmental	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	64 contacts →
	Partial evidence “WRD Environmental helps organizations committed to sustainability realize their vision.” Source: RevenueBase Database · checked Sep 28, 2026
2	Carnow, Conibear & Assoc., LTD	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
3	SB Friedman Development Advisors	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	47 contacts →
	Partial evidence “SB Friedman Development Advisors (SB Friedman) provides analytical, strategic and financial consulting services in support of complex, high-impact development projects.” Source: RevenueBase Database · checked Sep 28, 2026
4	Coherent Economics	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	47 contacts →
	Strong evidence “Coherent Economics is a boutique law and economics consulting firm providing world-class advisory services, data analysis, litigation support, and expert testimony to clients…” Source: RevenueBase Database · checked Sep 28, 2026
5	Aeterra, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
6	Center For Sustainability And Excellence - CSE	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	34 contacts →
	Partial evidence “The Center for Sustainability and Excellence (CSE) is a global leader in ESG consulting, Net Zero strategy, and Circular Economy solutions.” Source: RevenueBase Database · checked Sep 28, 2026
7	National Retrofitting Group, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	30 contacts →
	Partial evidence “National Retrofitting Group provides sustainability consulting along with a variety of energy retrofitting services to help our customers save money on their energy bills while…” Source: RevenueBase Database · checked Sep 28, 2026
8	Gabriel Environmental Services	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
9	RHP Risk Management INC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	11-50	26 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
10	RCF Economic & Financial Consulting, INC	Strong evidence	Chicago, United StatesHQ checked Sep 28, 2026	11-50	24 contacts →
	Strong evidence “Founded in 1978, RCF is an economic and financial consulting firm led by internationally renowned economists.” Source: RevenueBase Database · checked Sep 28, 2026
11	Carlson Environmental, A Nova Group, GBC Company	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
12	Nijman Franzetti, LLP	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
13	EPS Environmental Services, INC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
14	Inova Energy Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
15	The Astor Company	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
16	The GEC Group	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1-10	6 contacts →
	Strong evidence “The GEC Group is a premier economic consulting firm specializing in expert litigation support, serving law firms that represent plaintiffs and defendants in all types of…” Source: RevenueBase Database · checked Sep 28, 2026
17	Environmental Group Services Limited Egsl	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 28, 2026
18	Gruen Gruen Associates	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “The urban economists, sociologists, market and financial analysts, demographers and statisticians of Gruen Gruen + Associates (GG+A) are dedicated to helping make the best use of…” Source: RevenueBase Database · checked Sep 28, 2026
19	Greenleaf Advisors, LLC	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1-10	3 contacts →
	Partial evidence “Greenleaf Advisors is a consulting and transaction-services firm that builds sustainable enterprises and communities by bridging them to the resources and strategies they need to…” Source: RevenueBase Database · checked Sep 28, 2026
20	Himmelfarb Sustainability Consulting	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1-10	2 contacts →
	Partial evidence “Himmelfarb Sustainability Consulting is a sustainability and social impact consultancy that supports businesses, industry associations, and nonprofits; and the public relations…” Source: RevenueBase Database · checked Sep 28, 2026
21	Cadenza Environmental LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1-10	1 contacts →
	Strong evidence “Environmental Engineering and Consulting Services” Source: RevenueBase Database · checked Sep 28, 2026
22	Constructive Approaches, LLC	Strong evidence	Chicago, IL, United StatesHQ checked Sep 28, 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 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: environmental economics 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 environmental economics consulting firms.
Partial evidence: Its own public description names part of environmental economics consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental economics 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 22 of 47 environmental economics consulting firms based in Chicago, United States

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Environmental economics consulting firms based in Chicago, United States at a glance

As of Sep 28, 2026

43.2%Verified-email coverage

11.7Average contacts per company

1-10Median size (employees)

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 47 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 economics 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 Chicago, United States whose own description of what they do matches “environmental economics 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 environmental economics 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 environmental economics consulting firms, 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, 237 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.

Environmental economics consulting firms 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 economics 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 environmental economics consulting firms are there based in Chicago, United States?

RevenueBase identified 47 environmental economics consulting firms 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?

WRD Environmental, headquartered in Chicago, tops this list with the largest team on record.

Which city in the United States has the most environmental economics consulting firms?

Washington leads the United States with 69 headquartered companies, followed by New York (68) and Houston (63). Chicago has 47.

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 237 verified decision-maker contacts tracked across these 47 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.