Company lists · Data refreshed September 2026

Top 25 Green building companies based in the United States

Name: Green building 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 15, 2026 2,819 companies tracked

RevenueBase identified 2,819 green building companies headquartered in the United States as of September 2026 and tracks 35,126 professional contacts across them, including 17,229 with verified work emails. New York is the largest hub.

This list covers green building 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 15, 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 15, 2026 86% judged on-target in blind review

2,819Companies

35,126Contacts tracked

17,229Verified emails

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The 25 largest green building companies based in the United States

Ranked by team size

Top 25 of 2,819 green building companies based in the United States, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to green building 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	Mckinstry	Indirect evidence	Seattle, WA, United StatesHQ checked Sep 15, 2026	1,001-5,000	2,213 contacts →
	Indirect evidence “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Source: RevenueBase Database · checked Sep 15, 2026
2	DLR Group	Partial evidence	30 Offices, MN, United StatesHQ checked Sep 15, 2026	1,001-5,000	1,992 contacts →
	Partial evidence “DLR Group is an integrated design firm delivering architecture, engineering, interiors, planning, and building optimization for new construction, renovation, and adaptive reuse.” Source: RevenueBase Database · checked Sep 15, 2026
3	OLA	Indirect evidence	Austin, TX, United StatesHQ checked Sep 15, 2026	n/a	1,145 contacts →
	Indirect 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 15, 2026
4	The Beck Group	Indirect evidence	Dallas, TX, United StatesHQ checked Sep 15, 2026	501-1,000	1,054 contacts →
	Indirect evidence “We integrate architecture, construction, sustainability, and technology to transform how our clients design and build.” Source: RevenueBase Database · checked Sep 15, 2026
5	KPF	Indirect evidence	New York, NY, United StatesHQ checked Sep 15, 2026	501-1,000	970 contacts →
	Indirect evidence “KPF is dedicated to transforming cities through impactful design, collaborating closely with the world’s most forward-thinking clients to create high performing, carefully crafted…” Source: RevenueBase Database · checked Sep 15, 2026
6	Introba	Partial evidence	St Louis, MO, United StatesHQ checked Sep 15, 2026	1,001-5,000	822 contacts →
	Partial evidence “Introba is one of the world’s largest building engineering and consulting firms with more than employees in offices across the United States, Canada, the United Kingdom, Serbia…” Source: RevenueBase Database · checked Sep 15, 2026
7	Lpa, INC	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 15, 2026	501-1,000	728 contacts →
	Indirect evidence “Since LPA was founded in 1965, it's been our mission to deliver timeless, sustainable designs that benefit the environment, generate lasting value, enrich the human experience and…” Source: RevenueBase Database · checked Sep 15, 2026
8	Little Diversified Architectural Consulting	Indirect evidence	Little Global, VA, United StatesHQ checked Sep 15, 2026	201-500	509 contacts →
	Indirect evidence “At Little, we deliver results far beyond architecture-results you wouldn’t expect from an architectural firm.” Source: RevenueBase Database · checked Sep 15, 2026
9	Sitelogiq	Indirect evidence	Minneapolis, MN, United StatesHQ checked Sep 15, 2026	501-1,000	450 contacts →
	Indirect evidence “SitelogIQ provides design, engineering, and construction management services that help organizations nationwide modernize their facilities and infrastructure.” Source: RevenueBase Database · checked Sep 15, 2026
10	Estudio Architecture	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	n/a	390 contacts →
	Indirect evidence “eStudio is a specialized full service architectural and boutique design firm.” Source: RevenueBase Database · checked Sep 15, 2026
11	P2s	Indirect evidence	Long Beach, CA, United StatesHQ checked Sep 15, 2026	201-500	375 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 15, 2026
12	Newcomb & Boyd, LLP	Indirect evidence	Atlanta, GA, United StatesHQ checked Sep 15, 2026	201-500	363 contacts →
	Indirect evidence “We help clients design and operate facilities that remain resilient, reliable, and ready for what's next.” Source: RevenueBase Database · checked Sep 15, 2026
13	Wendel Companies	Indirect evidence	Williamsville, NY, United StatesHQ checked Sep 15, 2026	201-500	355 contacts →
	Indirect evidence “Wendel is an Architecture, Engineering, Energy Efficiency, and Construction Management Firm that delivers customized solutions and turnkey projects in innovative ways.” Source: RevenueBase Database · checked Sep 15, 2026
14	Performance Services	Partial evidence	Indianapolis, IN, United StatesHQ checked Sep 15, 2026	201-500	328 contacts →
	Partial evidence “We design and construct high-performing buildings and systems.” Source: RevenueBase Database · checked Sep 15, 2026
15	Cosentini Associates	Partial evidence	Nyc, NY, United StatesHQ checked Sep 15, 2026	201-500	306 contacts →
	Partial evidence “Cosentini has a 70+ year history of engineering many of the world’s most iconic buildings.” Source: RevenueBase Database · checked Sep 15, 2026
16	Environmental Consulting & Technology, Inc. ECT	Indirect evidence	Gainesville, FL, United StatesHQ checked Sep 15, 2026	201-500	305 contacts →
	Indirect evidence “Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…” Source: RevenueBase Database · checked Sep 15, 2026
17	VLK	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 15, 2026	201-500	297 contacts →
	Indirect evidence “VLK designs exemplary environments, innovative structures, and sustainable communities for tomorrow.” Source: RevenueBase Database · checked Sep 15, 2026
18	Bloom Companies, LLC	Indirect evidence	Milwaukee, WI, United StatesHQ checked Sep 15, 2026	51-200	292 contacts →
	Indirect evidence “Bloom Companies, LLC provides innovative and sustainable design and construction engineering solutions to government, municipal, industrial, and commercial clients.” Source: RevenueBase Database · checked Sep 15, 2026
19	Kirksey Architecture	Indirect evidence	Houston, TX, United StatesHQ checked Sep 15, 2026	201-500	252 contacts →
	Indirect evidence “We are Kirksey, a Texas-based architecture firm, passionate about great architecture and all things sustainable.” Source: RevenueBase Database · checked Sep 15, 2026
20	Dahlin Architecture Planning Interiors	Indirect evidence	Pleasanton, CA, United StatesHQ checked Sep 15, 2026	51-200	241 contacts →
	Indirect evidence “DAHLIN is a diverse architecture, planning, and interiors firm of 190+ multicultural professionals celebrating 50 years of design excellence.” Source: RevenueBase Database · checked Sep 15, 2026
21	Allana Buick & Bers, INC	Partial evidence	Palo Alto, CA, United StatesHQ checked Sep 15, 2026	201-500	229 contacts →
	Partial evidence “Allana Buick & Bers, Inc.(ABB) is a leading Architectural Engineering firm specializing in making buildings perform better by making them energy efficient and longer lasting with…” Source: RevenueBase Database · checked Sep 15, 2026
22	Quinn Evans	Indirect evidence	Washington, DC, United StatesHQ checked Sep 15, 2026	51-200	225 contacts →
	Indirect evidence “Creators of vital places.” Source: RevenueBase Database · checked Sep 15, 2026
23	Setty & Associates	Indirect evidence	Washington, DC, United StatesHQ checked Sep 15, 2026	201-500	220 contacts →
	Indirect evidence “Established in 1984, SETTY is headquartered in Fairfax, VA, with offices in Atlanta, GA, Baltimore, MD, Charlottesville, VA, Fairfax, VA, Los Angeles, CA, New York, NY…” Source: RevenueBase Database · checked Sep 15, 2026
24	PEG	Indirect evidence	Fairfax, VA, United StatesHQ checked Sep 15, 2026	201-500	214 contacts →
	Indirect evidence “PEG presents a comprehensive capacity for the evaluation and understanding of a broad base of energy and environmental sustainability related programs, policies and initiatives.” Source: RevenueBase Database · checked Sep 15, 2026
25	SUMAC	Indirect evidence	Chicago, IL, United StatesHQ checked Sep 15, 2026	51-200	183 contacts →
	Indirect evidence “SUMAC is an architecture, engineering, and consulting firm that promotes sustainability as the key element to increasing the profitability of our clients and partners.” Source: RevenueBase Database · checked Sep 15, 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 building 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 building companies.
Partial evidence: Its own public description names part of green building companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name green building 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 2,819 green building companies based in the United States

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Green building companies based in the United States at a glance

As of Sep 15, 2026

49.0%Verified-email coverage

12.5Average contacts per company

1-10Median size (employees)

4.6%Largest-city concentration · New York

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

1,942

11-50

738

51-200

100

201-500

501-1,000

1,001-5,000

10001+

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 2,819 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 building 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 building 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 building 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 building 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, 17,229 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 15, 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.

Green building companies by metro

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 building 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 building companies are there based in the United States?

RevenueBase identified 2,819 green building 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?

Mckinstry, headquartered in Seattle, tops this list with the largest team on record.

Which city has the most green building companies?

New York leads with 131 headquartered companies, followed by Los Angeles (69) and Portland (58).

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 17,229 verified decision-maker contacts tracked across these 2,819 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 15, 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.