Company lists · Data refreshed September 2026

Top 25 City sustainability consultants based in the United States

Name: City sustainability consultants 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 3,355 companies tracked

RevenueBase identified 3,355 company matches for city sustainability consultants associated with the United States as of September 2026 and tracks 231,488 professional contacts across them, including 106,744 with verified work emails. New York is the largest hub.

This list covers company matches for city sustainability consultants associated with the United States, 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.

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

3,355Companies

231,488Contacts tracked

106,744Verified emails

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The 25 largest city sustainability consultants based in the United States

Ranked by team size

Top 25 of 3,355 company matches for city sustainability consultants based in the United States, 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	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
4	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
5	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
6	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
7	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
8	Langan Engineering & Environmental Services	Exact match	Parsippany, NJ, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,177 contacts →
	Exact match “Langan's client-focused, highly entrepreneurial culture cultivates an environment of opportunities in which career growth and teamwork flourish.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
9	Clearesult	Exact match	Austin, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	2,121 contacts →
	Exact match “CLEAResult is the largest provider of energy efficiency, energy transition and energy sustainability services in North America.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
10	DLR Group	Exact match	30 Offices, MN, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,992 contacts →
	Exact match “DLR Group is an integrated design firm delivering architecture, engineering, interiors, planning, and building optimization for new construction, renovation, and adaptive reuse.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
11	IMEG	Exact match	Rock Island, IL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,985 contacts →
	Exact match “Leaders in Engineering and Innovation.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
12	Westwood Professional Services	Exact match	Plano, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,661 contacts →
	Exact match “At Westwood, our purpose is to create a better world for people through our work.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
13	Swca Environmental Consultants	Exact match	Phoenix, AZ, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,629 contacts →
	Exact match “Founded on a commitment to sound science and creative solutions, SWCA is a leader in environmental and management consulting services.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
14	GEI Consultants, INC	Exact match	Woburn, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,604 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
15	Freese And Nichols	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,496 contacts →
	Exact match “Freese and Nichols is a professional planning, consulting and engineering firm serving clients across the United States.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
16	Gresham Smith	Exact match	Nashville, TN, United StatesHQ recorded Sep 19, 2026	501-1,000	1,430 contacts →
	Exact match “Gresham Smith is a premier architecture, engineering and consultancy services firm dedicated to creating healthy and thriving communities.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
17	Davey Resource Group, INC	Exact match	Kent, OH, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,395 contacts →
	Exact match “Davey Resource Group, Inc.(DRG) provides innovative consulting and field services that support utility infrastructure and environmental stewardship.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
18	Ameresco	Exact match	Framingham, MA, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,383 contacts →
	Exact match “Ameresco, Inc.(NYSE:AMRC) is a leading energy infrastructure solutions provider dedicated to helping customers reduce costs, enhance resilience, and decarbonize to net zero in the…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
19	OLA	Exact match	Austin, TX, United StatesHQ recorded Sep 19, 2026	n/a	1,145 contacts →
	Exact match “OLA Sustainability, LLC OLA Sustainability is a consulting firm that focuses on integrating sustainable practices into commercial and multifamily design projects.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
20	Verdantas	Exact match	Tampa, FL, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,139 contacts →
	Exact match “At Verdantas, we blend engineering and environmental science together with advanced technology and world-renowned labs to create solutions with the big picture in mind.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
21	Apex Companies	Exact match	Rockville, MD, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,137 contacts →
	Exact match “Who is Apex?” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
22	Braun Intertec Corporation	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,065 contacts →
	Exact match “At Braun Intertec, we work at the intersection of the natural and built environments, combining science, technology, and engineering.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
23	WSB	Exact match	Minneapolis, MN, United StatesHQ recorded Sep 19, 2026	1,001-5,000	1,053 contacts →
	Exact match “Forge ahead.” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
24	KPF	Exact match	New York, NY, United StatesHQ recorded Sep 19, 2026	501-1,000	970 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 19, 2026 · View company records in RevenueBase
25	GAI Consultants, INC	Exact match	Homestead, PA, United StatesHQ recorded Sep 19, 2026	501-1,000	964 contacts →
	Exact match “Transforming ideas into reality® since 1958, GAI Consultants is an engineering, planning, and environmental consulting firm that provides customized solutions and local expertise…” 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 3,355 city sustainability consultants based in the United States

See the full list, filter by size, metro and specialty, and access 106,744 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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City sustainability consultants based in the United States at a glance

As of Sep 19, 2026

46.1%Verified-email coverage

69.0Average contacts per company

1-10Median size (employees)

5.8%Largest-city concentration · New York

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

2,159

11-50

843

51-200

217

201-500

501-1,000

1,001-5,000

5,001-10,000

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 3,355 companies.

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.
What qualifies: Company records associated with the United States 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. Where headquarters information is recorded, preview rows are also filtered to this page’s location. 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 106,744 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 metro

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 based in the United States?

RevenueBase identified 3,355 company matches for city sustainability consultants associated with the United States 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 city has the most city sustainability consultants?

New York leads with 195 company records, followed by Washington (100) and Chicago (77).

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 106,744 professional contacts with verified work emails tracked across these 3,355 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.