Company lists · Data refreshed September 2026

Top 25 Leed certification consulting firms based in the United States

Name: Leed certification consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 4, 2026 515 companies tracked

RevenueBase identified 515 leed certification consulting firms headquartered in the United States as of September 2026 and tracks 7,832 professional contacts across them, including 3,127 with verified work emails and 2,982 with mobile numbers. New York is the largest hub.

This list covers leed certification consulting firms 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 4, 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 4, 2026 86% judged on-target in blind review

515Companies

7,832Contacts tracked

3,127Verified emails

2,982Mobile numbers

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The 25 largest leed certification consulting firms based in the United States

Ranked by team size

Top 25 of 515 leed certification consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 4, 2026. RevenueBase Smart Search rates how each company's information relates to leed certification 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	OLA	Partial evidence	Austin, TX, United StatesHQ checked Sep 4, 2026	n/a	1,145 contacts →
	Partial evidence “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Source: RevenueBase Database · checked Sep 4, 2026
2	Syska Hennessy Group	Indirect evidence	Jacksonville, FL, United StatesHQ checked Sep 4, 2026	501-1,000	806 contacts →
	Indirect evidence “Consult Engineer Commission At Syska Hennessy Group, we create exceptional environments.” Source: RevenueBase Database · checked Sep 4, 2026
3	Glumac	Indirect evidence	San Francisco, NV, United StatesHQ checked Sep 4, 2026	201-500	396 contacts →
	Indirect evidence “Glumac, a Tetra Tech Company, is a global leader in building engineering, committed to delivering a low carbon future for all.” Source: RevenueBase Database · checked Sep 4, 2026
4	P2s	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 4, 2026	201-500	370 contacts →
	Indirect evidence “P2S has brought forward-thinking, sustainable engineering solutions to California, the Pacific Northwest, and beyond, for over 30 years.” Source: RevenueBase Database · checked Sep 4, 2026
5	Jva, INC	Partial evidence	Boulder, CO, United StatesHQ checked Sep 4, 2026	51-200	254 contacts →
	Partial evidence “JVA, Incorporated is an employee-owned consulting engineering firm with offices in Boulder, Fort Collins, Winter Park, Glenwood Springs, and Denver, Colorado.” Source: RevenueBase Database · checked Sep 4, 2026
6	Grumman Butkus Associates	Partial evidence	Evanston, WI, United StatesHQ checked Sep 4, 2026	51-200	150 contacts →
	Partial evidence “Grumman\|Butkus Associates (GBA) is a nationally recognized consulting engineering firm that specializes in mechanical, electrical and plumbing design services and energy and…” Source: RevenueBase Database · checked Sep 4, 2026
7	Steven Winter Associates	Indirect evidence	Norwalk, NY, United StatesHQ checked Sep 4, 2026	51-200	142 contacts →
	Indirect evidence “For over five decades, we’ve been at the forefront of transforming the built environment to be more energy efficient, accessible, healthy, and resilient.” Source: RevenueBase Database · checked Sep 4, 2026
8	Four Seasons Environmental, INC	Indirect evidence	Monroe, OH, United StatesHQ checked Sep 4, 2026	201-500	134 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 4, 2026
9	AKT Peerless	Indirect evidence	Saginaw, CT, United StatesHQ checked Sep 4, 2026	51-200	95 contacts →
	Indirect evidence “We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.” Source: RevenueBase Database · checked Sep 4, 2026
10	Verdani Partners	Strong evidence	Carlsbad, CA, United StatesHQ checked Sep 4, 2026	51-200	86 contacts →
	Strong 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 4, 2026
11	Magrann Associates	Partial evidence	Mount Laurel, PA, United StatesHQ checked Sep 4, 2026	51-200	79 contacts →
	Partial evidence “MaGrann Associates is an innovative energy efficiency and green building consulting and engineering firm headquartered in Mount Laurel, New Jersey with additional offices in…” Source: RevenueBase Database · checked Sep 4, 2026
12	Group14 Engineering, PBC	Partial evidence	Denver, CO, United StatesHQ checked Sep 4, 2026	11-50	76 contacts →
	Partial evidence “Group14 Engineering is a Denver-based consulting firm committed to inspiring better buildings where people thrive.” Source: RevenueBase Database · checked Sep 4, 2026
13	Codegreen	Partial evidence	New York, NY, United StatesHQ checked Sep 4, 2026	51-200	71 contacts →
	Partial evidence “CodeGreen is a leading national sustainability and energy efficiency consulting firm.” Source: RevenueBase Database · checked Sep 4, 2026
14	Brightworks Sustainability	Indirect evidence	Portland, OR, United StatesHQ checked Sep 4, 2026	51-200	60 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 4, 2026
15	Epsten Group, A Salas O'brien Company	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 4, 2026	51-200	59 contacts →
	Indirect evidence “At Epsten Group, we pride ourselves on being a pioneer for sustainability in the built environment.” Source: RevenueBase Database · checked Sep 4, 2026
16	RGD Consulting Engineers	Partial evidence	Jupiter, FL, United StatesHQ checked Sep 4, 2026	51-200	53 contacts →
	Partial evidence “For over 35 years, RGD Consulting Engineers has provided innovative structural, mechanical, electrical, plumbing and fire protection engineering designs and project management in…” Source: RevenueBase Database · checked Sep 4, 2026
17	Sustainable Investment Group SIG	Partial evidence	Atlanta, TX, United StatesHQ checked Sep 4, 2026	11-50	52 contacts →
	Partial 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 4, 2026
18	Skyetec	Partial evidence	Jacksonville, FL, United StatesHQ checked Sep 4, 2026	51-200	52 contacts →
	Partial 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 4, 2026
19	Atvaga Energy LLC	Indirect evidence	Edmonds, WA, United StatesHQ checked Sep 4, 2026	51-200	50 contacts →
	Indirect evidence “We are an established team of Energy, MEP, and Green Building professionals that provide Design Assistance for Engineers and Architects.” Source: RevenueBase Database · checked Sep 4, 2026
20	Lawhon & Associates, INC	Partial evidence	Columbus, OH, United StatesHQ checked Sep 4, 2026	11-50	49 contacts →
	Partial evidence “Lawhon & Associates, Inc.(L&A) provides full-service environmental and engineering consulting services to the public and private sector.” Source: RevenueBase Database · checked Sep 4, 2026
21	Altura	Partial evidence	Newport Beach, CA, United StatesHQ checked Sep 4, 2026	51-200	47 contacts →
	Partial evidence “Altura is a new breed of engineering consulting firm, delivering everything it takes to guide owners to realizing climate and carbon goals by improving energy, environmental, and…” Source: RevenueBase Database · checked Sep 4, 2026
22	Hallberg Engineering, INC	Partial evidence	White Bear Lake, MN, United StatesHQ checked Sep 4, 2026	11-50	44 contacts →
	Partial evidence “Established in 1979, Hallberg Engineering, Inc.(HEI) is a consulting engineering firm specializing in mechanical, electrical, and technology systems design, building analysis, and…” Source: RevenueBase Database · checked Sep 4, 2026
23	LP Consulting Engineers, INC	Partial evidence	Roseville, CA, United StatesHQ checked Sep 4, 2026	11-50	44 contacts →
	Partial evidence “LP Consulting Engineers, Inc.(LPCE) is headquartered in Northern California and has decades of experience.” Source: RevenueBase Database · checked Sep 4, 2026
24	BEE Engineers	Indirect evidence	Edmonds, WA, United StatesHQ checked Sep 4, 2026	11-50	41 contacts →
	Indirect evidence “BEE provides a comprehensive range of services dedicated to designing, inspecting, and testing buildings with a specific focus on weatherization and air barrier, energy efficiency…” Source: RevenueBase Database · checked Sep 4, 2026
25	ACC Environmental Consultants	Partial evidence	Oakland, WA, United StatesHQ checked Sep 4, 2026	51-200	41 contacts →
	Partial evidence “Established in 1986, ACC Environmental Consultants, Inc.(ACC) is an employee-owned full service environmental consulting and design firm recognized for its excellent and reliable…” Source: RevenueBase Database · checked Sep 4, 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: leed certification 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 leed certification consulting firms.
Partial evidence: Its own public description names part of leed certification consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name leed certification 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 25 of 515 leed certification consulting firms based in the United States

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Leed certification consulting firms based in the United States at a glance

As of Sep 4, 2026

39.9%Verified-email coverage

38.1%Mobile-number coverage

15.2Average contacts per company

1-10Median size (employees)

6.4%Largest-city concentration · New York

Sep 4, 2026Page data refreshed

Companies by employee count

1-10

333

11-50

149

51-200

201-500

501-1,000

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

00–30

22031–60

1,74161–90

1,14790–180

19180+

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 leed certification 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 the United States whose own description of what they do matches “leed certification 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 leed certification 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 leed certification consulting firms, 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, 3,127 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 4, 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.

Leed certification consulting firms by metro

Leed certification consulting firms in New York33

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 leed certification 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 leed certification consulting firms are there based in the United States?

RevenueBase identified 515 leed certification consulting firms 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?

OLA, headquartered in Austin, tops this list with the largest team on record.

Which city has the most leed certification consulting firms?

New York leads with 33 headquartered companies, followed by Atlanta (12) and Chicago (10).

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 3,127 verified decision-maker contacts tracked across these 515 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 4, 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.