Company lists · Data refreshed September 2026

Top 25 Environmental sustainability consulting firms based in New York, United States

Name: Environmental sustainability consulting firms based in New York, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 237 companies tracked

RevenueBase identified 237 company matches for environmental sustainability consulting firms associated with New York, United States as of September 2026 and tracks 12,013 professional contacts across them, including 6,697 with verified work emails. Across the United States, New York is the largest hub for this category.

This list covers company matches for environmental sustainability consulting firms associated with New York, 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 21, 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 21, 2026 How this list was built

237Companies

12,013Contacts tracked

6,697Verified emails

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The 25 largest environmental sustainability consulting firms based in New York, United States

Ranked by team size

Top 25 of 237 company matches for environmental sustainability consulting firms based in New York, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
2	AKRF	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	394 contacts →
	Exact match “Founded in 1981, AKRF employs 400 planners, engineers, scientists, economists, landscape designers, geologists, historians, archaeologists, acousticians, and many related…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Horwath HTL	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	201-500	198 contacts →
	Exact match “Bold steps forward.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	Onepointfive Opf.Degree	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	133 contacts →
	Exact match “At OnePointFive we solve your sustainability focused business challenges by empowering your organization with expert-led solutions, embedded training, and cutting edge tools to…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Environ Energy	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	98 contacts →
	Exact match “Environ Energy is a leader in accelerating global sustainable energy transformation for more than 30 years.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	KSV	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	93 contacts →
	Exact match “KSV is a certified women-owned agency specializing in clean energy.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7	En-Power Group	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	75 contacts →
	Exact match “We help building owners cut carbon, reduce costs, and stay compliant.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	Codegreen	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	72 contacts →
	Exact match “CodeGreen is a leading national sustainability and energy efficiency consulting firm.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	Cognitud	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	62 contacts →
	Exact match “Welcome to Cognitud, where purpose-driven consulting meets global impact.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	PEI Cobb Freed & Partners	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	51-200	58 contacts →
	Exact match “a global leader in architecture, planning, and sustainable design” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	Energy Infrastructure Partners LLC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	49 contacts →
	Exact match “Founded in 2011, Energy Infrastructure Partners (EIP) began with a clear premise: utilities, governments, and large energy users need a partner who is as committed to technical…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Growlity, INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	47 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Watchwire By Tango	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	39 contacts →
	Exact match “Tango Energy & Sustainability (fka WatchWire) is a sustainability and energy management software-as-a-service (EMSaaS) provider.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	BFJ Planning	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	39 contacts →
	Exact match “BFJ Planning is a consulting firm providing professional expertise in planning and related fields since its establishment in 1980.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Dagher Engineering, Pllc	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	37 contacts →
	Exact match “Dagher Engineering is an award-winning building systems engineering and sustainability consulting firm based in New York City.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	Governance & Accountability Institute, INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	32 contacts →
	Exact match “Governance & Accountability Institute is organized as the “Sustainability Headquarters™” for clients in the corporate community and in the investment and financial services sector.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Hargreaves Jones Landscape Architecture	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	32 contacts →
	Exact match “Hargreaves Jones (previously Hargreaves Associates) is a professional consulting firm comprised of landscape architects and planners with offices in New York, San Francisco, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	ADS Engineers	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	32 contacts →
	Exact match “ads ENGINEERS, DPC, established in 1979 continues to provide high-quality engineering services to our long-standing clients based on the principals established by the founding…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	MBB Architects	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	28 contacts →
	Exact match “MBB Architects is a distinguished women-owned architecture firm based in New York City.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	Great Forest	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	26 contacts →
	Exact match “Backed by 30+ years of experience, Great Forest is a leader in sustainable waste management consulting.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Boomi Environmental LLC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	21 contacts →
	Exact match “Boomi Environmental LLC (Boomi) is a premier environmental consulting firm specializing in providing practical, sustainable, and cost-effective solutions to water, wastewater, and…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22	Barliswedlick Architects	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	21 contacts →
	Exact match “BarlisWedlick is an award-winning, full-service firm known for designing expressive, sustainable, and soulful places to live, work, and gather.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Edesign Dynamics	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	20 contacts →
	Exact match “eDESIGN DYNAMICS is an environmental engineering and planning firm committed to solving water and ecological resources challenges in the developed and developing worlds.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Altanova	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	11-50	19 contacts →
	Exact match “Altanova is a sustainability firm with consulting and engineering capabilities.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25	Nexia Group Holdings, INC	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1-10	17 contacts →
	Exact match “Nexia Group Holdings provides strategic advice, operational consulting, and capital to early- and expansion-stage companies in the most promising segments of the sustainability…” Recorded in the RevenueBase company graph · Sep 21, 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 “environmental sustainability consulting firms”. 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 237 environmental sustainability consulting firms based in New York, United States

See the full list, filter by size, metro and specialty, and access 6,697 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Environmental sustainability consulting firms based in New York, United States at a glance

As of Sep 21, 2026

55.7%Verified-email coverage

50.7Average contacts per company

1-10Median size (employees)

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

152

11-50

51-200

201-500

10001+

Email recency for this list is measured across the whole United States list rather than for New York, so it is reported there. Company counts and contact totals on this page are exact for New York, over 237 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 New York, United States whose business descriptions match “environmental sustainability consulting firms” 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 6,697 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 21, 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.

Environmental sustainability consulting firms by metro in the United States

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 “environmental sustainability consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many environmental sustainability consulting firms are there based in New York, United States?

RevenueBase identified 237 company matches for environmental sustainability consulting firms associated with New York, 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?

WSP In The U.S tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city in the United States has the most environmental sustainability consulting firms?

New York leads the United States with 237 company records, followed by Houston (131) and Los Angeles (101).

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 6,697 professional contacts with verified work emails tracked across these 237 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 21, 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.