Company lists · Data refreshed September 2026

Top 25 Environmental law firms based in Boston, United States

Name: Environmental law 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 14, 2026 57 companies tracked

RevenueBase identified 57 environmental law firms headquartered in Boston, United States as of September 2026 and tracks 1,552 professional contacts across them, including 974 with verified work emails. Washington is the largest hub.

This list covers environmental law 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 14, 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 14, 2026 86% judged on-target in blind review

57Companies

1,552Contacts tracked

974Verified emails

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The 25 largest environmental law firms based in Boston, United States

Ranked by team size

Top 25 of 57 environmental law firms based in Boston, United States, ranked by team size, largest first. Data refreshed Sep 14, 2026. RevenueBase Smart Search rates how each company's information relates to environmental law 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	Morrison Mahoney LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	201-500	398 contacts →
	Indirect evidence “For 75 years, Morrison Mahoney LLP has been committed to servicing its clients' needs and working with its clients to achieve desired goals and objectives.” Source: RevenueBase Database · checked Sep 14, 2026
2	Boyle Shaughnessy LAW	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	137 contacts →
	Partial evidence “Recognized as one of the region's most experienced, reliable and persistent litigation firms, Boyle \| Shaughnessy Law builds confidence with each client by achieving winning…” Source: RevenueBase Database · checked Sep 14, 2026
3	Charter	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	104 contacts →
	Partial evidence “The Charter Companies are a premier New England environmental firm delivering vision, clarity, certainty, and closure for complex, environmentally impaired sites, both on land and…” Source: RevenueBase Database · checked Sep 14, 2026
4	Cetrulo LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	100 contacts →
	Indirect evidence “For over 25 years, our dedicated attorneys have been setting the standard for exceptional representation in liability defense litigation.” Source: RevenueBase Database · checked Sep 14, 2026
5	Anderson & Kreiger LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	78 contacts →
	Partial evidence “Anderson & Kreiger LLP is a vibrant, growing law firm committed to making the legal experience personal again.” Source: RevenueBase Database · checked Sep 14, 2026
6	Cmbg3 LAW	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	75 contacts →
	Partial evidence “CMBG3 Law is a dynamic law firm that litigates, counsels, and navigates its clients through complex legal matters throughout New England, northern and southern California, and a…” Source: RevenueBase Database · checked Sep 14, 2026
7	Ruberto, Israel & Weiner, P.C	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	66 contacts →
	Partial evidence “Ruberto, Israel & Weiner is a well established business law firm based in Boston, providing legal services to a diverse client base throughout the region, across the U.S.” Source: RevenueBase Database · checked Sep 14, 2026
8	Davis Malm	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	63 contacts →
	Indirect evidence “We want to get to know you.” Source: RevenueBase Database · checked Sep 14, 2026
9	Rich May, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	53 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
10	Smith Duggan Cornell & Gollub LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	53 contacts →
	Indirect evidence “Smith Duggan Cornell & Gollub LLP provides effective, innovative and timely legal advice to businesses, organizations, individuals and public entities in New England and across…” Source: RevenueBase Database · checked Sep 14, 2026
11	Dain, Torpy, LE Ray, Wiest & Garner, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	51 contacts →
	Indirect evidence “We offer developers, business and property owners and users experienced legal representation in all aspects of real estate development, ownership and operation.” Source: RevenueBase Database · checked Sep 14, 2026
12	Adler Cohen Harvey Wakeman & Guekguezian, LLP	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	44 contacts →
	Indirect evidence “For more than twenty-five years, Adler, Cohen, Harvey, Wakeman & Guekguezian has consistently delivered successful results defending our clients in civil litigation and licensing…” Source: RevenueBase Database · checked Sep 14, 2026
13	Mckenzie & Associates, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	30 contacts →
	Indirect evidence “Since 1984, McKenzie & Associates, P.C.” Source: RevenueBase Database · checked Sep 14, 2026
14	Murphy & King, Professional Corporation	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	29 contacts →
	Indirect evidence “Unraveling Complexity A business is a complex entity.” Source: RevenueBase Database · checked Sep 14, 2026
15	Block & Leviton LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	25 contacts →
	Partial evidence “Block & Leviton LLP is a boutique law firm focused on complex litigation nationwide.” Source: RevenueBase Database · checked Sep 14, 2026
16	Pierce & Mandell, P.C	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	25 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
17	Smith, Costello & Crawford	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	13 contacts →
	Partial evidence “Smith, Costello & Crawford is a regulatory and legislative policy firm dedicated to helping our clients achieve success through consulting, lobbying, and law services.” Source: RevenueBase Database · checked Sep 14, 2026
18	Gilman, Mclaughlin & Hanrahan, LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	11 contacts →
	Partial evidence “At the law firm of Gilman, McLaughlin & Hanrahan, LLP, we have been serving individuals and businesses in and around Boston, eastern Massachusetts and Cape Cod since 1975.” Source: RevenueBase Database · checked Sep 14, 2026
19	Rubin And Rudman LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	51-200	10 contacts →
	Partial evidence “For over 100 years, Rubin and Rudman's attorneys have helped shape the laws of changing times.” Source: RevenueBase Database · checked Sep 14, 2026
20	Strang Scott	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	10 contacts →
	Indirect evidence “Strang Scott is a dynamic business transaction and litigation firm, dedicated to serving the needs of business of all sizes.” Source: RevenueBase Database · checked Sep 14, 2026
21	Governo LAW Firm LLC	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	10 contacts →
	Partial evidence “We are pleased to announce that, effective April 1, 2018, the attorneys, paralegals and support staff formerly with Governo Law Firm LLC have moved to Smith Duggan Buell & Rufo…” Source: RevenueBase Database · checked Sep 14, 2026
22	Laredo & Smith, LLP	Partial evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	8 contacts →
	Partial evidence “The law firm of Laredo & Smith, LLP provides respected advice and creative representation in business litigation, white collar criminal defense and government investigations…” Source: RevenueBase Database · checked Sep 14, 2026
23	Phillips & Angley	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	11-50	8 contacts →
	Indirect evidence “Since 1974, the attorneys at Phillips & Angley have provided a full range of legal services to individuals and businesses throughout Massachusetts.” Source: RevenueBase Database · checked Sep 14, 2026
24	Lovett O'brien	Indirect evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Indirect evidence “The attorneys at Lovett O'Brien have decades of experience and a history of solving complex legal issues.” Source: RevenueBase Database · checked Sep 14, 2026
25	Klavens LAW Group, P.C	Strong evidence	Boston, MA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Strong evidence “At Klavens Law Group, we leverage our legal skills and business acumen to enable innovative ventures that have positive environmental or social impact.” Source: RevenueBase Database · checked Sep 14, 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 law 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 law firms.
Partial evidence: Its own public description names part of environmental law firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental law 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 57 environmental law firms based in Boston, United States

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Environmental law firms based in Boston, United States at a glance

As of Sep 14, 2026

62.8%Verified-email coverage

27.2Average contacts per company

1-10Median size (employees)

222.8%Largest-city concentration · Washington

Sep 14, 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 Boston, so it is reported there. Company counts and contact totals on this page are exact for Boston, over 57 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 law 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 law 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 law 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 law 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, 974 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 14, 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 law 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 law 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 law firms are there based in Boston, United States?

RevenueBase identified 57 environmental law 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?

Morrison Mahoney LLP, headquartered in Boston, tops this list with the largest team on record.

Which city has the most environmental law firms?

Washington leads with 127 headquartered companies, followed by Houston (112) and New York (111).

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 974 verified decision-maker contacts tracked across these 57 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 14, 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.