Company lists · Data refreshed September 2026

Top 25 Environmental law firms based in Seattle, United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 14, 2026 45 companies tracked

RevenueBase identified 45 environmental law firms headquartered in Seattle, United States as of September 2026 and tracks 1,377 professional contacts across them, including 968 with verified work emails. Washington is the largest hub.

This list covers environmental law firms headquartered in Seattle, 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

45Companies

1,377Contacts tracked

968Verified emails

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

Ranked by team size

Top 25 of 45 environmental law firms based in Seattle, 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	Foster Garvey PC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	201-500	253 contacts →
	Partial evidence “Foster Garvey PC is a full-service law firm serving several of the most influential and innovative companies and governments in the country.” Source: RevenueBase Database · checked Sep 14, 2026
2	Williams Kastner	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	198 contacts →
	Partial evidence “Williams Kastner is a Pacific Northwest law firm founded in 1929, with more than 65 attorneys in Seattle, Portland, and Spokane.” Source: RevenueBase Database · checked Sep 14, 2026
3	Stokes Lawrence, P.S	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	132 contacts →
	Indirect evidence “With offices in Seattle and Yakima, Washington, Stokes Lawrence represents businesses ranging from small, closely held entities to larger corporations, and the families and…” Source: RevenueBase Database · checked Sep 14, 2026
4	Hagens Berman Sobol Shapiro LLP	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	130 contacts →
	Partial evidence “Hagens Berman Sobol Shapiro LLP is an internationally recognized law firm headquartered in Seattle, Washington.” Source: RevenueBase Database · checked Sep 14, 2026
5	Cascadia Consulting Group	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	110 contacts →
	Partial evidence “Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.” Source: RevenueBase Database · checked Sep 14, 2026
6	HKM Employment Attorneys LLP	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	100 contacts →
	Partial evidence “HKM is a national employment law firm that represents individuals and workers in all aspects of employment law.” Source: RevenueBase Database · checked Sep 14, 2026
7	Hillis Clark Martin & Peterson P.S	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	83 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
8	Wilson Smith Cochran Dickerson	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	49 contacts →
	Indirect evidence “We are trial and appellate lawyers who advise and represent clients in a broad range of business and casualty disputes.” Source: RevenueBase Database · checked Sep 14, 2026
9	Floyd Snider	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	48 contacts →
	Partial evidence “Floyd\|Snider is a multi-disciplinary environmental consulting firm providing engineering, strategic project management, and scientific expertise to achieve balanced solutions to…” Source: RevenueBase Database · checked Sep 14, 2026
10	Confluence Environmental Company	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	37 contacts →
	Partial evidence “Confluence specializes in environmental science, project delivery, and regulatory strategy and compliance.” Source: RevenueBase Database · checked Sep 14, 2026
11	Soundearth Strategies, INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	33 contacts →
	Partial evidence “SoundEarth is a 100% employee-owned environmental consulting firm with more than 40 dedicated and talented professionals working together to improve the environment in which we…” Source: RevenueBase Database · checked Sep 14, 2026
12	Oles Morrison Rinker & Baker LLP	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	51-200	29 contacts →
	Indirect evidence “With deep roots in the Pacific Northwest and Alaska, Oles Morrison has built a legal practice with a focus on construction, government contracts, commercial litigation and real…” Source: RevenueBase Database · checked Sep 14, 2026
13	Keating, Bucklin & Mccormack, Inc., P.S	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	26 contacts →
	Indirect evidence “Keating, Bucklin & McCormack, Inc, P.S.” Source: RevenueBase Database · checked Sep 14, 2026
14	Cascadia LAW Group Pllc	Strong evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	18 contacts →
	Strong evidence “Cascadia Law Group PLLC provides clients with the most effective environmental representation available in our region.” Source: RevenueBase Database · checked Sep 14, 2026
15	Mccullough Hill Pllc	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	17 contacts →
	Indirect evidence “We have delivered innovative solutions to the real estate and business industry for over 30 years.” Source: RevenueBase Database · checked Sep 14, 2026
16	Veris LAW Group Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	15 contacts →
	Partial evidence “Our clients, whether international corporations or family-owned businesses, compete in a challenging economic and regulatory environment.” Source: RevenueBase Database · checked Sep 14, 2026
17	Ridolfi INC	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	10 contacts →
	Partial evidence “Established in 1990, RIDOLFI is an award-winning, small, certified Women’s Business Enterprise (WBE) that specializes in environmental engineering and scientific consulting.” Source: RevenueBase Database · checked Sep 14, 2026
18	Plauché & Carr LLP	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	8 contacts →
	Indirect evidence “Plauché & Carr attorneys serve as advocates and counselors to our clients regarding legal and regulatory issues related to natural resource based activities, primarily in marine…” Source: RevenueBase Database · checked Sep 14, 2026
19	Truss Faber PC	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	7 contacts →
	Indirect evidence “Truss Faber provides legal counsel to the construction and manufacturing industries and companies involved in government contracts.” Source: RevenueBase Database · checked Sep 14, 2026
20	Fikso Kretschmer Smith Dixon Ormseth P.S	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	11-50	6 contacts →
	Indirect evidence “Our clients seek a practical and straightforward approach to their transactions and legal problems.” Source: RevenueBase Database · checked Sep 14, 2026
21	Ziontz Chestnut	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	6 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 14, 2026
22	Banyan Legal Counsel	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	5 contacts →
	Indirect evidence “At Banyan Legal Counsel, our philosophy begins with our name.” Source: RevenueBase Database · checked Sep 14, 2026
23	Northwest Resource LAW Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	5 contacts →
	Partial evidence “Northwest Resource Law was founded in 2017 by lawyers with decades of big-firm experience dedicated to serving Pacific Northwest businesses.” Source: RevenueBase Database · checked Sep 14, 2026
24	Corr Downs Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “At Corr Downs, we offer a platform that provides our clients with access to the talent and expertise that is typically found in only the largest of law firms, but with the value…” Source: RevenueBase Database · checked Sep 14, 2026
25	Goldfarb & Huck Roth Riojas Pllc	Partial evidence	Seattle, WA, United StatesHQ checked Sep 14, 2026	1-10	3 contacts →
	Partial evidence “Law Practice” 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 45 environmental law firms based in Seattle, United States

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

As of Sep 14, 2026

70.3%Verified-email coverage

30.6Average contacts per company

11-50Median size (employees)

282.2%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 Seattle, so it is reported there. Company counts and contact totals on this page are exact for Seattle, over 45 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 Seattle, 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 Seattle 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, 968 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 Seattle, United States?

RevenueBase identified 45 environmental law firms headquartered in Seattle, 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?

Foster Garvey PC, headquartered in Seattle, 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 968 verified decision-maker contacts tracked across these 45 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.