Company lists · Data refreshed November 2026

Top 25 Ecological design consultants based in the United States

Name: Ecological design consultants based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Nov 6, 2026 3,581 companies tracked

RevenueBase identified 3,581 company matches for ecological design consultants associated with the United States as of November 2026 and tracks 95,166 professional contacts across them, including 49,682 with verified work emails. New York is the largest hub.

This list covers company matches for ecological design 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 November 6, 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 Nov 6, 2026 How this list was built

3,581Companies

95,166Contacts tracked

49,682Verified emails

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The 25 largest ecological design consultants based in the United States

Ranked by team size

Top 25 of 3,581 company matches for ecological design consultants based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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	Tetra Tech	Exact match	Pasadena, CA, United StatesHQ recorded Nov 6, 2026	10001+	14,232 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 · Nov 6, 2026 · View company records in RevenueBase
2	WSP In The U.S	Exact match	New York, NY, United StatesHQ recorded Nov 6, 2026	10001+	10,188 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 · Nov 6, 2026 · View company records in RevenueBase
3	DLR Group	Exact match	30 Offices, TN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	2,118 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 · Nov 6, 2026 · View company records in RevenueBase
4	Swca Environmental Consultants	Exact match	Phoenix, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,695 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 · Nov 6, 2026 · View company records in RevenueBase
5	Verdantas	Exact match	Tampa, FL, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,275 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 · Nov 6, 2026 · View company records in RevenueBase
6	OLA	Exact match	Austin, TX, United StatesHQ recorded Nov 6, 2026	n/a	1,164 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 · Nov 6, 2026 · View company records in RevenueBase
7	WSB	Exact match	Minneapolis, MN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,159 contacts →
	Exact match “Forge ahead.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
8	Braun Intertec Corporation	Exact match	Minneapolis, MN, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,149 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 · Nov 6, 2026 · View company records in RevenueBase
9	Trinity Consultants	Exact match	Dallas, TX, United StatesHQ recorded Nov 6, 2026	1,001-5,000	1,114 contacts →
	Exact match “Trinity Consultants is a global team of specialists helping organizations solve complex challenges in environmental compliance, ecological protection, infrastructure and built…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10	Parametrix	Exact match	Seattle, WA, United StatesHQ recorded Nov 6, 2026	501-1,000	923 contacts →
	Exact match “At Parametrix, we help our clients imagine what's possible.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11	ATC Group Services LLC	Exact match	Lafayette, MA, United StatesHQ recorded Nov 6, 2026	1,001-5,000	876 contacts →
	Exact match “ATC Group Services LLC is now Atlas.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
12	DUDEK	Exact match	Encinitas, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	829 contacts →
	Exact match “Dudek is an environmental, planning, and engineering consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13	Psomas	Exact match	Los Angeles, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	786 contacts →
	Exact match “Our award-winning projects are produced through innovation, creativity, and technical expertise.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14	Environmental Science Associates	Exact match	San Francisco, OR, United StatesHQ recorded Nov 6, 2026	501-1,000	748 contacts →
	Exact match “ESA is a 100% employee-owned environmental consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15	Resource Environmental Solutions LLC	Exact match	Bellaire, NC, United StatesHQ recorded Nov 6, 2026	501-1,000	695 contacts →
	Exact match “As the nation’s largest dedicated provider of nature-based solutions, RES (Resource Environmental Solutions) is restoring a resilient earth for a modern world, project by project.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
16	H2m Architects Engineers	Exact match	Melville, CT, United StatesHQ recorded Nov 6, 2026	501-1,000	692 contacts →
	Exact match “About H2M H2M architects + engineers is a multi-disciplinary professional consulting and design firm, proud of its long history of client service and consistent ability to meet…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17	Tighe & Bond	Exact match	Westfield, MA, United StatesHQ recorded Nov 6, 2026	501-1,000	685 contacts →
	Exact match “Tighe & Bond is the Northeast’s leading engineering, environmental, planning, and design consulting firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18	Parkhill	Exact match	Lubbock, OK, United StatesHQ recorded Nov 6, 2026	501-1,000	665 contacts →
	Exact match “We are a full-service design firm of extraordinary planners, designers, architects, and engineers.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19	MSA Professional Services	Exact match	Baraboo, WI, United StatesHQ recorded Nov 6, 2026	501-1,000	656 contacts →
	Exact match “As a full-service consulting firm, MSA Professional Services (MSA) is all about creating communities that work.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20	MIG	Exact match	Berkeley, OR, United StatesHQ recorded Nov 6, 2026	201-500	645 contacts →
	Exact match “Since it was founded in 1982, MIG has focused on planning, designing and sustaining environments that support human development.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21	V3 Companies	Exact match	Woodridge, IN, United StatesHQ recorded Nov 6, 2026	201-500	534 contacts →
	Exact match “V3 is your partner in reimagining our built and natural world.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22	BSC Group	Exact match	Boston, MA, United StatesHQ recorded Nov 6, 2026	51-200	531 contacts →
	Exact match “BSC Group, Inc.(BSC) is a multidisciplinary consulting firm with a staff of more than 200 professionals and offices in Boston, Worcester, Andover, and West Yarmouth, MA, as well…” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23	Rincon Consultants	Exact match	Ventura, CA, United StatesHQ recorded Nov 6, 2026	501-1,000	509 contacts →
	Exact match “Rincon Consultants is a multidisciplinary environmental, planning, and advisory firm.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24	Groundwater & Environmental Services, INC	Exact match	Wall Township, VA, United StatesHQ recorded Nov 6, 2026	201-500	470 contacts →
	Exact match “We are Groundwater & Environmental Services, Inc, better known as GES.” Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25	Design Workshop	Exact match	Denver, TX, United StatesHQ recorded Nov 6, 2026	51-200	445 contacts →
	Exact match “At Design Workshop, we shape places for future generations to thrive.” Recorded in the RevenueBase company graph · Nov 6, 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 “ecological design 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 3,581 ecological design consultants based in the United States

See the full list, filter by size, metro and specialty, and access 49,682 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Ecological design consultants based in the United States at a glance

As of Nov 6, 2026

52.2%Verified-email coverage

26.6Average contacts per company

1-10Median size (employees)

3.4%Largest-city concentration · New York

Nov 6, 2026Page data refreshed

Companies by employee count

1-10

2,334

11-50

962

51-200

193

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 3,581 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 “ecological design 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 49,682 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 November 6, 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.

Ecological design 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 “ecological design consultants”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ecological design consultants are there based in the United States?

RevenueBase identified 3,581 company matches for ecological design consultants associated with the United States as of November 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?

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

Which city has the most ecological design consultants?

New York leads with 123 company records, followed by Portland (92) and Seattle (78).

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 49,682 professional contacts with verified work emails tracked across these 3,581 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 November 6, 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.