Company lists · Data refreshed September 2026

Top 24 Environmental sustainability consulting firms based in Boston, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 49 companies tracked

RevenueBase identified 49 environmental sustainability consulting firms headquartered in Boston, United States as of September 2026 and tracks 840 professional contacts across them, including 291 with verified work emails. New York is the largest hub.

This list covers environmental sustainability consulting firms headquartered in Boston, 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 21, 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 21, 2026 86% judged on-target in blind review

49Companies

840Contacts tracked

291Verified emails

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The 24 largest environmental sustainability consulting firms based in Boston, United States

Ranked by team size

Top 24 of 49 environmental sustainability consulting firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental sustainability 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	BSC Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	51-200	504 contacts →
	Partial evidence “BSC Group, Inc.(BSC) is a multidisciplinary consulting firm with a staff of more than 200 professionals and offices in Boston, Worcester, Andover, and West Yarmouth, MA, as well…” Source: RevenueBase Database · checked Sep 21, 2026
2	The Collaborative	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	38 contacts →
	Partial evidence “The Collaborative is an award-winning consulting firm with a national reputation for excellence in planning, design, and communications.” Source: RevenueBase Database · checked Sep 21, 2026
3	Sustainability Roundtable, INC	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	22 contacts →
	Partial evidence “Sustainability Roundtable Inc.(SR Inc) works to be the world's most respected strategic advisor in enterprise decarbonization.” Source: RevenueBase Database · checked Sep 21, 2026
4	Stack CO	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	20 contacts →
	Indirect evidence “Stack + Co.” Source: RevenueBase Database · checked Sep 21, 2026
5	Brown, Richardson Rowe, Landscape Architects Planners	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	16 contacts →
	Indirect evidence “Brown, Richardson + Rowe, Inc, Landscape Architects + Planners, is a certified Women-Owned Business Enterprise founded in 1981.” Source: RevenueBase Database · checked Sep 21, 2026
6	ICO Energy And Engineering, INC	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	13 contacts →
	Indirect evidence “ICO Energy and Engineering guides and helps our clients navigate operating critical facilities to high performance levels utilizing our expert engineering and metering technology.” Source: RevenueBase Database · checked Sep 21, 2026
7	Applied Economics Clinic	Strong evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	13 contacts →
	Strong evidence “Based in Massachusetts, the Applied Economics Clinic (AEC) is a mission-based non-profit consulting group that offers expert services in the areas of energy, environment, consumer…” Source: RevenueBase Database · checked Sep 21, 2026
8	The Isosceles Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Partial evidence “The Isosceles Group provides environmental management and occupational health and safety services to industry and governments worldwide.” Source: RevenueBase Database · checked Sep 21, 2026
9	Aadmi Consulting	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	12 contacts →
	Indirect evidence “Aadmi is a full-service firm committed to helping you develop a sustainable expansion strategy that will enhance your business and foster its growth.” Source: RevenueBase Database · checked Sep 21, 2026
10	PAF Architects	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	11 contacts →
	Partial evidence “PAF Architects is a Boston based consulting firm specializing in: • New construction • Adaptive reuse of older buildings • Historic preservation, • Custom residential design •…” Source: RevenueBase Database · checked Sep 21, 2026
11	Peregrine Energy Group	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Indirect evidence “Peregrine Energy Group brings complex energy pictures into focus.” Source: RevenueBase Database · checked Sep 21, 2026
12	Asidaco, LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	11-50	9 contacts →
	Partial evidence “ASIDACO is a consulting firm specializing in owner’s representation, product applications, and product distribution.” Source: RevenueBase Database · checked Sep 21, 2026
13	RPM	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Indirect evidence “In a changing climate, reducing energy and greenhouse gas emissions goes hand in hand with asset preservation, resiliency, and tenant health and well-being.” Source: RevenueBase Database · checked Sep 21, 2026
14	Envienergy Studio LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	7 contacts →
	Partial evidence “At enviEnergy Studio, we place buildings in the larger context of urban energy consumption as sustainability leaders and innovators.” Source: RevenueBase Database · checked Sep 21, 2026
15	Gogreen Lawncare	Partial evidence	Boston, United StatesHQ checked Sep 21, 2026	1-10	5 contacts →
	Partial evidence “A growing environmentally friendly lawn and landscape company.” Source: RevenueBase Database · checked Sep 21, 2026
16	Therma Consulting Group	Partial evidence	Boston, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Therma Consulting offers executive search, bespoke staffing solutions, and agile resource solutions to organizations working to build a cleaner, more sustainable future.” Source: RevenueBase Database · checked Sep 21, 2026
17	Drive Management Solutions	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “We are passionate about sustainability and helping energy service companies solve for their operational needs.” Source: RevenueBase Database · checked Sep 21, 2026
18	Castalune	Indirect evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Indirect evidence “Castalune is the trusted partner of growth-oriented companies who are seeking a competitive edge in the global energy transition.” Source: RevenueBase Database · checked Sep 21, 2026
19	Springer Architects	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	2 contacts →
	Partial evidence “Springer Architects operates as a network based structure, working in close collaboration with engineers, building technology experts and environmental consultants.” Source: RevenueBase Database · checked Sep 21, 2026
20	Well Adapted Group	Indirect evidence	Boston, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Indirect evidence “WELL Adapted Group aims to redefine healthy spaces and inspire individuals and organizations to realize greater wellbeing and engagement.” Source: RevenueBase Database · checked Sep 21, 2026
21	Journey Environmental Consulting LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Partial evidence “JOURNEY’s mission is to empower small to medium-sized enterprises in navigating EHS regulatory requirements and seamlessly integrating sustainability business practices into their…” Source: RevenueBase Database · checked Sep 21, 2026
22	Photon Renewables	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Partial evidence “We are a renewable energy consulting company specializing in project development, value engineering, and construction management.” Source: RevenueBase Database · checked Sep 21, 2026
23	Purposeful Projects Group	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Partial evidence “Purposeful Projects provides corporations with the skills and expertise needed to move their sustainability and social responsibility efforts forward.” Source: RevenueBase Database · checked Sep 21, 2026
24	Earth First Alliance EFA	Partial evidence	Boston, MA, United StatesHQ checked Sep 21, 2026	1-10	1 contacts →
	Partial evidence “EFA is a full service consulting firm and start-up incubator focused on putting the planet first.” Source: RevenueBase Database · checked Sep 21, 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 sustainability 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 sustainability consulting firms.
Partial evidence: Its own public description names part of environmental sustainability 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 sustainability 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 24 of 49 environmental sustainability consulting firms based in Boston, United States

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Environmental sustainability consulting firms based in Boston, United States at a glance

As of Sep 21, 2026

34.6%Verified-email coverage

17.1Average contacts per company

1-10Median size (employees)

483.7%Largest-city concentration · New York

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

1,001-5,000

10001+

Email recency for this list is measured across the whole United States list rather than for Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 49 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 sustainability 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 Boston, United States whose own description of what they do matches “environmental sustainability 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 sustainability 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 sustainability consulting firms, and records with no verified work email. Companies headquartered outside Boston 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, 291 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 21, 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 sustainability 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 sustainability 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 sustainability consulting firms are there based in Boston, United States?

RevenueBase identified 49 environmental sustainability consulting firms headquartered in Boston, 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?

BSC Group, headquartered in Boston, tops this list with the largest team on record.

Which city has the most environmental sustainability consulting firms?

New York leads with 237 headquartered companies, followed by Houston (131) and Los Angeles (101).

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 291 verified decision-maker contacts tracked across these 49 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 21, 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.