Company lists · Data refreshed September 2026

Top 25 City sustainability consultants worldwide

Name: City sustainability consultants worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 23,665 companies tracked

RevenueBase identified 23,665 company matches for city sustainability consultants worldwide as of September 2026 and tracks 635,788 professional contacts across them, including 246,511 with verified work emails. The United States is the largest market and London the largest hub.

This list covers company matches for city sustainability consultants worldwide, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 19, 2026. Country and city lists for city sustainability consultants follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 19, 2026 How this list was built

23,665Companies

635,788Contacts tracked

246,511Verified emails

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The 25 largest city sustainability consultants worldwide

Ranked by team size

Top 25 of 23,665 company matches for city sustainability consultants worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 19, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	AECOM	Exact match	Dallas, TX, United StatesHQ recorded Sep 19, 2026	10001+	63,914 contacts →
	Exact match “AECOM is the global infrastructure leader, committed to delivering a better world.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
2	Jacobs	Exact match	Dallas, TX, United StatesHQ recorded Sep 19, 2026	10001+	46,351 contacts →
	Exact match “At Jacobs, we're challenging today to reinvent tomorrow – delivering outcomes and solutions for the world's most complex challenges.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
3	Arcadis	Exact match	Amsterdam, NetherlandsHQ recorded Sep 19, 2026	10001+	33,846 contacts →
	Exact match “Arcadis is a leading global partner, delivering transformative projects with businesses, cities and industries.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
4	Stantec	Exact match	Edmonton, AB, CanadaHQ recorded Sep 19, 2026	10001+	28,416 contacts →
	Exact match “Stantec empowers clients, people, and communities to rise to the world’s greatest challenges at a time when the world faces more unprecedented concerns than ever before.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
5	SWECO	Exact match	Stockholm, SwedenHQ recorded Sep 19, 2026	10001+	18,445 contacts →
	Exact match “Sweco is at the heart of the green transition - planning and designing the sustainable communities and cities of the future.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
6	Ramboll	Exact match	Copenhagen, DenmarkHQ recorded Sep 19, 2026	10001+	15,715 contacts →
	Exact match “Ramboll is a global architecture, engineering and consultancy company founded in Denmark in 1945.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
7	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Sep 19, 2026	10001+	12,999 contacts →
	Exact match “Tetra Tech is the leader in water, environment and sustainable infrastructure, providing high-end technical and engineering services for projects worldwide.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
8	Engie Solutions France	Exact match	La Garenne-colombes, FranceHQ recorded Sep 19, 2026	10001+	12,011 contacts →
	Exact match “Les activités Infrastructures Energétiques Locales d’ENGIE accompagnent les collectivités, les industries et le secteur du bâtiment sur la voie de la décarbonation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	DAR	Exact match	Beirut, LebanonHQ recorded Sep 19, 2026	10001+	10,822 contacts →
	Exact match “Dar is one of the world’s leading consultancies, providing design, planning, engineering, sustainability consulting, digital solutions and services, project management, and…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	10001+	9,318 contacts →
	Exact match “What if you could shape built and natural environments – and the future of those that use them?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	ERM	Exact match	London, United KingdomHQ recorded Sep 19, 2026	5,001-10,000	9,119 contacts →
	Exact match “Sustainability is our business.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Khatib & Alami	Exact match	Downtown, PolandHQ recorded Sep 19, 2026	5,001-10,000	5,792 contacts →
	Exact match “Khatib & Alami (K&A) is a multidisciplinary design consultancy which operates primarily across the Middle East & Africa, Levant, Central and South-East Asia, and Europe.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	JAN DE NUL Group	Exact match	Capellen, LuxembourgHQ recorded Sep 19, 2026	5,001-10,000	5,424 contacts →
	Exact match “We are World Builders shaping water, land and energy.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	Roland Berger	Exact match	Munich, GermanyHQ recorded Sep 19, 2026	1,001-5,000	4,632 contacts →
	Exact match “Roland Berger is the only leading global strategy consultancy of European origin.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Artelia	Exact match	Saint-ouen, FranceHQ recorded Sep 19, 2026	5,001-10,000	4,612 contacts →
	Exact match “Artelia is an international multidisciplinary consultancy, engineering and project management group specialising in mobility, water, energy, building and industry.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	SLR Consulting	Exact match	London, United KingdomHQ recorded Sep 19, 2026	1,001-5,000	3,848 contacts →
	Exact match “SLR is a committed partner in our clients’ sustainability journeys.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Drees & Sommer	Exact match	Stuttgart, GermanyHQ recorded Sep 19, 2026	5,001-10,000	3,475 contacts →
	Exact match “Uniting opposites to create a world we want to live in Drees & Sommer is a partner-managed, global consulting company providing a single source of consultation and implementation…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	SJ Group	Exact match	SingaporeHQ recorded Sep 19, 2026	10001+	3,277 contacts →
	Exact match “SJ designs spaces and systems that unlock human potential, delivering connection and certainty on shifting ground.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	KEO International Consultants	Exact match	Safat, KuwaitHQ recorded Sep 19, 2026	1,001-5,000	3,038 contacts →
	Exact match “From shaping iconic skylines to crafting sustainable communities, KEO builds legacies for a better tomorrow.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	ÅF	Exact match	Stockholm, SwedenHQ recorded Sep 19, 2026	10001+	3,002 contacts →
	Exact match “AFRY is an international leader within engineering, design and advisory services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	NIRAS	Exact match	Allerød, DenmarkHQ recorded Sep 19, 2026	1,001-5,000	2,699 contacts →
	Exact match “At NIRAS, we engineer solutions for a shared future.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	APTIM	Exact match	Baton Rouge, LA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,639 contacts →
	Exact match “APTIM enhances the quality of the environment, wellbeing of people, resilience of communities, and opportunity for employees to make a difference, not just a living.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	TYPSA	Exact match	San Sebastian De Los Reyes, SpainHQ recorded Sep 19, 2026	1,001-5,000	2,422 contacts →
	Exact match “TYPSA is an independent consulting and engineering services group, and a leader in infrastructure, energy, environmental and city solutions.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	VHB	Exact match	Watertown, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,277 contacts →
	Exact match “We are VHB.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	Mckinstry	Exact match	Seattle, WA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,213 contacts →
	Exact match “We're a national construction and energy services company dedicated to innovating the waste and climate harm out of the built environment.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “city sustainability consultants”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 23,665 city sustainability consultants worldwide

See the full list, filter by size, metro and specialty, and access 246,511 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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City sustainability consultants worldwide at a glance

As of Sep 19, 2026

38.8%Verified-email coverage

26.9Average contacts per company

1-10Median size (employees)

1.8%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

15,766

11-50

5,893

51-200

1,284

201-500

324

501-1,000

118

1,001-5,000

124

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for city sustainability consultants are linked below.
What qualifies: Company records worldwide whose business descriptions match “city sustainability consultants” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 246,511 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

City sustainability consultants by location

113 lists · largest first

Every City sustainability consultants list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “city sustainability consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many city sustainability consultants are there worldwide?

RevenueBase identified 23,665 company matches for city sustainability consultants worldwide as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

AECOM tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which country has the most city sustainability consultants?

The United States leads with 3,355 companies, followed by Brazil (1,620) and France (1,437). Every city sustainability consultants list by country and city is linked on this page.

Which city has the most city sustainability consultants?

London leads with 415 company records, followed by Paris (309) and Sao Paulo (299).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 246,511 professional contacts with verified work emails tracked across these 23,665 companies; direct dials are available where recorded.

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 SmartSearch, 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.