Company lists · Data refreshed September 2026

Top 25 Green certification providers based in the United States

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 133 companies tracked

RevenueBase identified 133 green certification providers headquartered in the United States as of September 2026 and tracks 2,335 professional contacts across them, including 1,038 with verified work emails. San Francisco is the largest hub.

This list covers green certification providers 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 19, 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 19, 2026 86% judged on-target in blind review

133Companies

2,335Contacts tracked

1,038Verified emails

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The 25 largest green certification providers based in the United States

Ranked by team size

Top 25 of 133 green certification providers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to green certification providers: 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 19, 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 19, 2026
2	Green Business Certification Inc. Gbci	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 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 19, 2026
3	Verdani Partners	Partial evidence	Carlsbad, CA, United StatesHQ checked Sep 19, 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 19, 2026
4	PRI Certification	Partial evidence	Warrendale, PA, United StatesHQ checked Sep 19, 2026	11-50	78 contacts →
	Partial evidence “At PRI Certification℠, we're committed to protecting what matters by delivering industry-leading certification services across Quality, Data Security, Environmental, and Health &…” Source: RevenueBase Database · checked Sep 19, 2026
5	Sustainable Investment Group SIG	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 19, 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 19, 2026
6	Cradle To Cradle Products Innovation Institute	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
7	Sustainable Solutions Corporation	Indirect evidence	Royersford, PA, United StatesHQ checked Sep 19, 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 19, 2026
8	Us-Eco Logic Texenergy Solutions	Partial evidence	Irving, TX, United StatesHQ checked Sep 19, 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 19, 2026
9	VCA Green	Partial evidence	Orange, CA, United StatesHQ checked Sep 19, 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 19, 2026
10	Center For Resource Solutions	Indirect evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
11	Green Seal	Partial evidence	Washington, DC, United StatesHQ checked Sep 19, 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 19, 2026
12	Green Building Initiative GBI	Partial evidence	Portland, OR, United StatesHQ checked Sep 19, 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 19, 2026
13	SOL Design Consulting	Strong evidence	Cincinnati, OH, United StatesHQ checked Sep 19, 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 19, 2026
14	Catalyst Partners	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 19, 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 19, 2026
15	LORAX	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 19, 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 19, 2026
16	Revireo	Indirect evidence	Springfield, NJ, United StatesHQ checked Sep 19, 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 19, 2026
17	O'brien360	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 19, 2026	11-50	21 contacts →
	Indirect evidence “O'Brien360 is a nationally recognized leader in the sustainable building community.” Source: RevenueBase Database · checked Sep 19, 2026
18	Ecomedes	Strong evidence	San Francisco, CA, United StatesHQ checked Sep 19, 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 19, 2026
19	Ioas INC	Indirect evidence	Fargo, ND, United StatesHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “IOAS works to strengthen trust in organic and sustainability claims.” Source: RevenueBase Database · checked Sep 19, 2026
20	The Change Climate Project	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Partial evidence “Since 2019, The Change Climate Project has helped hundreds of brands differentiate themselves through our high impact climate certification program, which has catalyzed more than…” Source: RevenueBase Database · checked Sep 19, 2026
21	Heatspring	Partial evidence	Ann Arbor, MI, United StatesHQ checked Sep 19, 2026	1-10	16 contacts →
	Partial evidence “HeatSpring offers certification and training for professionals in clean technologies like solar and heat pumps.” Source: RevenueBase Database · checked Sep 19, 2026
22	Greencircle Certified	Partial evidence	Royersford, PA, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “GreenCircle Certified, LLC was established to ensure specificity in third-party certification after encountering many unsubstantiated claims in the marketplace.” Source: RevenueBase Database · checked Sep 19, 2026
23	Pearl Certification	Partial evidence	Charlottesville, VA, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “Pearl Certification makes high-performance home value visible to benefit homeowners and the contractors, builders, raters, and real estate professionals who serve them.” Source: RevenueBase Database · checked Sep 19, 2026
24	Ecopreserve	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Indirect evidence “Our mission is to alter the course of climate change by advancing solutions that reduce environmental impact, increase operational performance, and improve equity and quality of…” Source: RevenueBase Database · checked Sep 19, 2026
25	Glacier Consulting Services Your ISO Partner	Partial evidence	Clarkston, United StatesHQ checked Sep 19, 2026	1-10	11 contacts →
	Partial evidence “With established years in consulting, auditing, training, and certification body experience, we at Glacier Consulting understand what it takes to establish and implement effective…” Source: RevenueBase Database · checked Sep 19, 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 providers. 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 providers.
Partial evidence: Its own public description names part of green certification providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green certification providers. 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 133 green certification providers based in the United States

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Green certification providers based in the United States at a glance

As of Sep 19, 2026

44.5%Verified-email coverage

17.6Average contacts per company

1-10Median size (employees)

5.3%Largest-city concentration · San Francisco

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 133 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 providers, 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 providers”. 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 providers), 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 providers, 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, 1,038 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 19, 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 providers, 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 providers are there based in the United States?

RevenueBase identified 133 green certification providers 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 providers?

San Francisco leads with 7 headquartered companies, followed by Washington (6) and Chicago (4).

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 1,038 verified decision-maker contacts tracked across these 133 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 19, 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.