Company lists · Data refreshed September 2026

Top 25 Ecological consulting firms based in New York, United States

Name: Ecological 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 12, 2026 70 companies tracked

RevenueBase identified 70 ecological consulting firms headquartered in New York, United States as of September 2026 and tracks 12,284 professional contacts across them, including 7,408 with verified work emails and 5,818 with mobile numbers. Houston is the largest hub.

This list covers ecological consulting firms headquartered in New York, 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 12, 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 12, 2026 86% judged on-target in blind review

70Companies

12,284Contacts tracked

7,408Verified emails

5,818Mobile numbers

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

Ranked by team size

Top 25 of 70 ecological consulting firms based in New York, United States, ranked by team size, largest first. Data refreshed Sep 12, 2026. RevenueBase Smart Search rates how each company's information relates to ecological 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	WSP In The U.S	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	10001+	9,318 contacts →
	Indirect evidence “What if you could shape built and natural environments – and the future of those that use them?” Source: RevenueBase Database · checked Sep 12, 2026
2	Hazen And Sawyer	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1,001-5,000	2,100 contacts →
	Indirect evidence “As Hazen marks 75 years, we celebrate a legacy of absolute commitment to our clients while delivering the best technical work available anywhere.” Source: RevenueBase Database · checked Sep 12, 2026
3	AKRF	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	201-500	394 contacts →
	Indirect evidence “Founded in 1981, AKRF employs 400 planners, engineers, scientists, economists, landscape designers, geologists, historians, archaeologists, acousticians, and many related…” Source: RevenueBase Database · checked Sep 12, 2026
4	GRO Intelligence	Indirect evidence	New York, United StatesHQ checked Sep 12, 2026	51-200	67 contacts →
	Indirect evidence “Gro Intelligence illuminates the interrelationships between our earth’s ecology and human economy to help you see the big picture and act on the small details.” Source: RevenueBase Database · checked Sep 12, 2026
5	True Environmental	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	201-500	37 contacts →
	Partial evidence “True Environmental (“True”) is building a diversified environmental services organization focused on consulting and engineering, water/wastewater management, testing/analytical…” Source: RevenueBase Database · checked Sep 12, 2026
6	Hargreaves Jones Landscape Architecture	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	32 contacts →
	Partial evidence “Hargreaves Jones (previously Hargreaves Associates) is a professional consulting firm comprised of landscape architects and planners with offices in New York, San Francisco, and…” Source: RevenueBase Database · checked Sep 12, 2026
7	ADS Engineers	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	32 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 12, 2026
8	Boomi Environmental LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	21 contacts →
	Partial evidence “Boomi Environmental LLC (Boomi) is a premier environmental consulting firm specializing in providing practical, sustainable, and cost-effective solutions to water, wastewater, and…” Source: RevenueBase Database · checked Sep 12, 2026
9	Edesign Dynamics	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	20 contacts →
	Partial evidence “eDESIGN DYNAMICS is an environmental engineering and planning firm committed to solving water and ecological resources challenges in the developed and developing worlds.” Source: RevenueBase Database · checked Sep 12, 2026
10	Polise Consulting Engineers, D.P.C	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	18 contacts →
	Partial evidence “Polise Consulting Engineer, D.P.C.(PCE) is a detail-orientated consulting engineering firm specializing in mechanical, electrical, and building services design.” Source: RevenueBase Database · checked Sep 12, 2026
11	ANZ Consulting Engineering, Pllc	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	13 contacts →
	Partial evidence “ANZ Consulting Engineering is a full-service MEP/FP design company with offices located in both Brooklyn and Midtown Manhattan.” Source: RevenueBase Database · checked Sep 12, 2026
12	Ganey Science	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	11 contacts →
	Indirect evidence “Ganey Science is a small business enterprise based in New York.” Source: RevenueBase Database · checked Sep 12, 2026
13	Ambient Group, INC	Indirect evidence	New York, United StatesHQ checked Sep 12, 2026	51-200	11 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 12, 2026
14	Maypole Environmental Inspections, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	10 contacts →
	Indirect evidence “Maypole is a licensed inspection company with over 20 years of industry experience in navigating building codes and environmental hazards.” Source: RevenueBase Database · checked Sep 12, 2026
15	Utility Rates Analysts IS NOW Environ Energy	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	51-200	10 contacts →
	Indirect evidence “URA is now part of Environ Energy, a leader in accelerating global sustainable energy transformation for more than 30 years.” Source: RevenueBase Database · checked Sep 12, 2026
16	Lawrence Env, LLC	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	9 contacts →
	Partial evidence “Lawrence Env LLC provides environmental due diligence and risk management consulting services to a broad spectrum of real estate clients.” Source: RevenueBase Database · checked Sep 12, 2026
17	Vektor Consultants	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	9 contacts →
	Partial evidence “An environmental consulting and construction management company providing an all-encompassing package to carry your projects to the next level.” Source: RevenueBase Database · checked Sep 12, 2026
18	The Casa Group, INC	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	7 contacts →
	Indirect evidence “Headquartered in New York City, The CASA Group, Inc.” Source: RevenueBase Database · checked Sep 12, 2026
19	Longman Lindsey	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	7 contacts →
	Partial evidence “Longman Lindsey, part of Cerami and Trinity Consultants, offers acoustical consulting services geared toward the construction industry.” Source: RevenueBase Database · checked Sep 12, 2026
20	Tenen Environmental	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	6 contacts →
	Indirect evidence “Tenen Environmental provides effective and real world solutions for its clients in the areas of environmental engineering, geology and hydrogeology and regulatory compliance.” Source: RevenueBase Database · checked Sep 12, 2026
21	Ko2 Consulting	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	5 contacts →
	Partial evidence “KO2 Consulting provides strategic energy consultant services for government agencies, non- profit organizations and private companies to achieve organizational energy performance…” Source: RevenueBase Database · checked Sep 12, 2026
22	Earth First Consulting	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	11-50	5 contacts →
	Indirect evidence “Our approach to engineering design services is centered on sustainability and integrating high-performance solutions in harmony with building physics and cutting-edge technology.” Source: RevenueBase Database · checked Sep 12, 2026
23	E4p Consulting Engineering Pllc	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	4 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 12, 2026
24	Alumni Planning Solutions	Partial evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	3 contacts →
	Partial evidence “Alumni Planning Solutions, a Minority Business Enterprise (MBE) is a trusted environmental consulting and urban planning firm working in New York City and beyond.” Source: RevenueBase Database · checked Sep 12, 2026
25	Environmental Building Solutions, LLC	Indirect evidence	New York, NY, United StatesHQ checked Sep 12, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 12, 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: ecological 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 ecological consulting firms.
Partial evidence: Its own public description names part of ecological consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ecological 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 70 ecological consulting firms based in New York, United States

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

As of Sep 12, 2026

60.3%Verified-email coverage

47.4%Mobile-number coverage

175.5Average contacts per company

1-10Median size (employees)

110.0%Largest-city concentration · Houston

Sep 12, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 14.0d

6,1440–30

1,11331–60

3961–90

190–180

111180+

Company record updated

Median 51.0d

00–30

6,43231–60

4,19561–90

92090–180

737180+

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 ecological 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 New York, United States whose own description of what they do matches “ecological 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 ecological 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 ecological consulting firms, and records with no verified work email. Companies headquartered outside New York 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, 7,408 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 12, 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.

Ecological consulting firms by metro in the United States

Ecological consulting firms in Houston77
Ecological consulting firms in New York70
Ecological consulting firms in Portland64
Ecological consulting firms in Seattle57
Ecological consulting firms in Washington52
Ecological consulting firms in Chicago48
Ecological consulting firms in San Diego47

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 ecological 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 ecological consulting firms are there based in New York, United States?

RevenueBase identified 70 ecological consulting firms headquartered in New York, 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?

WSP In The U.S, headquartered in New York, tops this list with the largest team on record.

Which city has the most ecological consulting firms?

Houston leads with 77 headquartered companies, followed by New York (70) and Portland (64).

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 7,408 verified decision-maker contacts tracked across these 70 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 12, 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.