Company lists · Data refreshed September 2026

Top 25 Green certification companies based in the United States

Name: Green certification companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 178 companies tracked

RevenueBase identified 178 green certification companies headquartered in the United States as of September 2026 and tracks 2,615 professional contacts across them, including 1,218 with verified work emails. San Francisco is the largest hub.

This list covers green certification companies headquartered in the 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 20, 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 20, 2026 86% judged on-target in blind review

178Companies

2,615Contacts tracked

1,218Verified emails

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The 25 largest green certification companies based in the United States

Ranked by team size

Top 25 of 178 green certification companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to green certification 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	SCS Global Services	Partial evidence	Emeryville, CA, United StatesHQ checked Sep 20, 2026	201-500	667 contacts →
	Partial evidence “Scientific Certification Systems, Inc, now doing business as SCS Global Services, is a trusted leader in third-party environmental, sustainability and food quality certification…” Source: RevenueBase Database · checked Sep 20, 2026
2	Green Business Certification Inc. Gbci	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	n/a	156 contacts →
	Partial evidence “The premier organization independently recognizing excellence in green business industry performance and practice globally.” Source: RevenueBase Database · checked Sep 20, 2026
3	Verdani Partners	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 20, 2026	51-200	89 contacts →
	Partial evidence “Verdani Partners is a full service sustainability consulting firm specialized in corporate sustainability, LEED certification and greening and retrofitting existing buildings.” Source: RevenueBase Database · checked Sep 20, 2026
4	Brightworks Sustainability	Indirect evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	51-200	61 contacts →
	Indirect evidence “Recognized for advanced subject matter expertise, wide-ranging technical resources, creative problem-solving, and excellence in professional practice, Brightworks Sustainability…” Source: RevenueBase Database · checked Sep 20, 2026
5	Sustainable Investment Group SIG	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	11-50	52 contacts →
	Indirect evidence “Sustainable Investment Group, LLC (SIG) is a full-service sustainable building consulting firm that provides environmentally focused solutions to design, construction, and real…” Source: RevenueBase Database · checked Sep 20, 2026
6	Skyetec	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 20, 2026	51-200	52 contacts →
	Indirect evidence “SkyeTec is an award winning energy rating and indoor environmental consulting company that provides third-party inspections for residential and commercial construction projects.” Source: RevenueBase Database · checked Sep 20, 2026
7	Cradle To Cradle Products Innovation Institute	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	46 contacts →
	Indirect evidence “We certify what matters: Products that are good for people and the planet.” Source: RevenueBase Database · checked Sep 20, 2026
8	Sustainable Solutions Corporation	Indirect evidence	Royersford, PA, United StatesHQ checked Sep 20, 2026	11-50	43 contacts →
	Indirect evidence “Sustainable Solutions Corporation (SSC) helps organizations reduce costs, improve competitive advantage, and minimize environmental impact through end-to-end corporate…” Source: RevenueBase Database · checked Sep 20, 2026
9	Us-Eco Logic Texenergy Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 20, 2026	51-200	40 contacts →
	Partial evidence “US-Eco Logic / TexEnergy Solutions is a consulting firm offering services that assist developments looking to become certified as “green” and/or “energy efficient”.” Source: RevenueBase Database · checked Sep 20, 2026
10	VCA Green	Partial evidence	Orange, CA, United StatesHQ checked Sep 20, 2026	51-200	39 contacts →
	Partial evidence “VCA Green provides a full scope of green building consulting and commissioning services, including LEED®, GreenPoint Rated, CALGreen compliance, HERS, commercial energy audits and…” Source: RevenueBase Database · checked Sep 20, 2026
11	Vert Environmental	Partial evidence	San Diego, CA, United StatesHQ checked Sep 20, 2026	11-50	39 contacts →
	Partial evidence “We are a green environmental testing and consulting firm, dedicated to providing the highest level of customer service available in the industry.” Source: RevenueBase Database · checked Sep 20, 2026
12	Center For Resource Solutions	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	38 contacts →
	Indirect evidence “Center for Resource Solutions (CRS) is an environmental nonprofit that creates policy and market solutions to advance sustainable energy.” Source: RevenueBase Database · checked Sep 20, 2026
13	Green Seal	Partial evidence	Washington, DC, United StatesHQ checked Sep 20, 2026	11-50	36 contacts →
	Partial evidence “Green Seal® is a global nonprofit committed to making sustainability everyone’s business.” Source: RevenueBase Database · checked Sep 20, 2026
14	Green Building Initiative GBI	Partial evidence	Portland, OR, United StatesHQ checked Sep 20, 2026	11-50	33 contacts →
	Partial evidence “The Green Building Initiative (GBI) is a 501(c)3 nonprofit organization dedicated to improving the built environment's impact on climate and society.” Source: RevenueBase Database · checked Sep 20, 2026
15	SOL Design Consulting	Strong evidence	Cincinnati, OH, United StatesHQ checked Sep 20, 2026	11-50	33 contacts →
	Strong evidence “Sol design + consulting specializes in energy efficiency and green building certification services for multifamily and commercial developers, owners, builders and architects.” Source: RevenueBase Database · checked Sep 20, 2026
16	Catalyst Partners	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 20, 2026	11-50	31 contacts →
	Indirect evidence “Catalyst Partners is a multi-dimensional consortium of knowledge leaders committed to high performance restorative protocols for buildings, interiors, and products.” Source: RevenueBase Database · checked Sep 20, 2026
17	LORAX	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	11-50	25 contacts →
	Partial evidence “About Lorax Partnerships Lorax Partnerships provides sustainability and green building consulting services to building developers, owners, and occupants, as well as business…” Source: RevenueBase Database · checked Sep 20, 2026
18	Earthshift Global	Indirect evidence	Kittery, ME, United StatesHQ checked Sep 20, 2026	11-50	24 contacts →
	Indirect evidence “EarthShift Global is a leader in environmental and social sustainability consulting, software, and training to clients in industry, academia, and government.” Source: RevenueBase Database · checked Sep 20, 2026
19	Revireo	Indirect evidence	Springfield, NJ, United StatesHQ checked Sep 20, 2026	11-50	23 contacts →
	Indirect evidence “ReVireo provides analysis, consulting, and verification services to help clients determine and achieve target levels of energy efficiency and sustainability for building projects…” Source: RevenueBase Database · checked Sep 20, 2026
20	Blue Strike Environmental	Indirect evidence	Monterey, CA, United StatesHQ checked Sep 20, 2026	11-50	22 contacts →
	Indirect evidence “The Blue Strike Environmental (BSE) mission is to meet the needs of businesses, communities, and the environment by creating innovative solutions designed to balance environmental…” Source: RevenueBase Database · checked Sep 20, 2026
21	O'brien360	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 20, 2026	11-50	21 contacts →
	Indirect evidence “O'Brien360 is a nationally recognized leader in the sustainable building community.” Source: RevenueBase Database · checked Sep 20, 2026
22	Sustainable Design Consulting, LLC	Partial evidence	Richmond, VA, United StatesHQ checked Sep 20, 2026	11-50	21 contacts →
	Partial evidence “Sustainable Design Consulting, LLC (SDC) is an award-winning, prolific green building consulting and training firm dedicated to bettering our built environment through sustainable…” Source: RevenueBase Database · checked Sep 20, 2026
23	Ecomedes	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	11-50	21 contacts →
	Strong evidence “Ecomedes manages the most comprehensive database of green certifications across the widest range of products.” Source: RevenueBase Database · checked Sep 20, 2026
24	FOX Energy Specialists	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 20, 2026	11-50	18 contacts →
	Indirect evidence “Fox Energy Specialists is a Texas-based company that provides independent third-party energy efficiency inspections, testing, and ratings.” Source: RevenueBase Database · checked Sep 20, 2026
25	Supergreen Solutions	Indirect evidence	Bel Air, MD, United StatesHQ checked Sep 20, 2026	51-200	17 contacts →
	Indirect evidence “A Sustainable Business is a Profitable Business.” Source: RevenueBase Database · checked Sep 20, 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: green certification 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 green certification companies.
Partial evidence: Its own public description names part of green certification companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green certification 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 25 of 178 green certification companies based in the United States

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Green certification companies based in the United States at a glance

As of Sep 20, 2026

46.6%Verified-email coverage

14.7Average contacts per company

1-10Median size (employees)

5.1%Largest-city concentration · San Francisco

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

118

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 178 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 green certification 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 the United States whose own description of what they do matches “green certification 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 green certification 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 green certification companies, and records with no verified work email. Companies headquartered outside United States 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, 1,218 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 20, 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.

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 green certification 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 green certification companies are there based in the United States?

RevenueBase identified 178 green certification companies headquartered in the 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?

SCS Global Services, headquartered in Emeryville, tops this list with the largest team on record.

Which city has the most green certification companies?

San Francisco leads with 9 headquartered companies, followed by Chicago (7) and New York (6).

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 1,218 verified decision-maker contacts tracked across these 178 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 20, 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.