Company lists · Data refreshed September 2026

Top 25 Climate adaptation consultants based in the United States

RevenueBase identified 754 company matches for climate adaptation consultants associated with the United States as of September 2026 and tracks 14,152 professional contacts across them, including 7,033 with verified work emails. New York is the largest hub.

This list covers company matches for climate adaptation 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 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
754Companies
14,152Contacts tracked
7,033Verified emails
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The 25 largest climate adaptation consultants based in the United States

Ranked by team size
Top 25 of 754 company matches for climate adaptation consultants based in the 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.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 21, 20261,001-5,0002,639 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 21, 2026 · View company records in RevenueBase
2Exact matchMiami, FL, United StatesHQ recorded Sep 21, 20261,001-5,0001,260 contacts →

Exact match

“Expertly balancing experience and innovation to deliver unique solutions to public and private clients.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3Exact matchMorrisville, NC, United StatesHQ recorded Sep 21, 2026501-1,0001,175 contacts →

Exact match

“IEM is a professional services firm dedicated to building a safe, secure, and resilient world.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4Exact matchTampa, FL, United StatesHQ recorded Sep 21, 20261,001-5,0001,139 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 21, 2026 · View company records in RevenueBase
5Exact matchEvanston, IL, United StatesHQ recorded Sep 21, 2026201-500472 contacts →

Exact match

“For over twenty years, Hagerty Consulting has supported clients in preparing for, responding to, and recovering from some of the nation’s largest and most complex disasters.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6Exact matchUtica, NY, United StatesHQ recorded Sep 21, 2026501-1,000393 contacts →

Exact match

“The impact of disasters-natural or otherwise-can leave even the most robust entities vulnerable, causing uncertainty over their future.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
7Exact matchGainesville, FL, United StatesHQ recorded Sep 21, 2026201-500305 contacts →

Exact match

“Environmental Consulting & Technology, Inc.(ECT) is a multi-disciplinary environmental and sustainability consulting firm delivering strategy, permitting, design, and management…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8Exact matchBaton Rouge, LA, United StatesHQ recorded Sep 21, 202651-200305 contacts →

Exact match

“CSRS was acquired by Westwood Professional Services on June 30, 2025.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9Exact matchSan Francisco, CA, United StatesHQ recorded Sep 21, 202651-200288 contacts →

Exact match

“CPI is an analysis and advisory organization with deep expertise in finance and policy.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10Exact matchLancaster, NY, United StatesHQ recorded Sep 21, 20265,001-10,000278 contacts →

Exact match

“E&E is now WSP USA.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11Exact matchCharlotte, NC, United StatesHQ recorded Sep 21, 2026201-500207 contacts →

Exact match

“The trusted advisors for the public sector.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12Exact matchBend, OR, United StatesHQ recorded Sep 21, 2026201-500190 contacts →

Exact match

“Lindahl Reed empowers tomorrow by inspiring change and shaping a better future.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13Exact matchFlorham Park, NJ, United StatesHQ recorded Sep 21, 2026201-500190 contacts →

Exact match

“Matrix New World Engineering is a growing business with project experience throughout the U.S.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14Exact matchWest Sacramento, CA, United StatesHQ recorded Sep 21, 2026201-500181 contacts →

Exact match

“We are a global engineering and disaster management firm providing expert solutions to sustain industries and safeguard communities.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15Exact matchCambridge, MA, United StatesHQ recorded Sep 21, 202651-200163 contacts →

Exact match

“IEc is an environmental consulting firm with four decades of experience providing consulting services to a diverse client base.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16Exact matchColumbia, MD, United StatesHQ recorded Sep 21, 202651-200150 contacts →

Exact match

“Energetics is a full-service technical and management consulting company specializing in energy (specifically energy modernization, efficiency, and clean energy) and…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17Exact matchHonolulu, HI, United StatesHQ recorded Sep 21, 202651-200145 contacts →

Exact match

“At Oceanit, a rule-breaking practice of Intellectual Anarchy™ produces disruptive innovation, as we consistently discover the edges of thinking and create breakthroughs in…”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18Exact matchWashington, DC, United StatesHQ recorded Sep 21, 202611-50140 contacts →

Exact match

“At KonTerra, we support organizations that manage international development, humanitarian and emergency management operations.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19Exact matchSeattle, WA, United StatesHQ recorded Sep 21, 202651-200110 contacts →

Exact match

“Cascadia Consulting Group is a majority women-owned consulting firm specializing in environmental and sustainability solutions.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20Exact matchChantilly, VA, United StatesHQ recorded Sep 21, 2026201-500104 contacts →

Exact match

“Established in 1983, TechLaw provides environmental and management consulting services to the public sector nationwide.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21Exact matchSaginaw, MI, United StatesHQ recorded Sep 21, 202651-20096 contacts →

Exact match

“We are environmental consultants and redevelopment experts who are proud to help build sustainable communities.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
22Exact matchAlpharetta, GA, United StatesHQ recorded Sep 21, 202651-20090 contacts →

Exact match

“iParametrics is a recognized leader in emergency management, homeland security, program management, and cost engineering.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23Exact matchSan Mateo, CA, United StatesHQ recorded Sep 21, 202651-20083 contacts →

Exact match

“Jupiter is the trusted leader in climate risk analytics for organizations looking to strengthen their climate resilience.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24Exact matchSilver Spring, MD, United StatesHQ recorded Sep 21, 202651-20074 contacts →

Exact match

“We are a small business that helps smart leaders solve complex technical and management problems by tackling challenges in new ways.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
25Exact matchIrvine, CA, United StatesHQ recorded Sep 21, 202651-20064 contacts →

Exact match

“EPD was created to assist clients through the complex regulatory and interdisciplinary process required to bring projects to fruition in the most thoughtful manner.”

Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase

Showing 25 of 754 climate adaptation consultants based in the United States

See the full list, filter by size, metro and specialty, and access 7,033 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Climate adaptation consultants based in the United States at a glance

As of Sep 21, 2026
49.7%Verified-email coverage
18.8Average contacts per company
1-10Median size (employees)
6.4%Largest-city concentration · New York
Sep 21, 2026Page data refreshed

Companies by employee count

1-10
576
11-50
128
51-200
35
201-500
8
501-1,000
3
1,001-5,000
3
5,001-10,000
1

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 754 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 “climate adaptation 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 7,033 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.

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

How many climate adaptation consultants are there based in the United States?

RevenueBase identified 754 company matches for climate adaptation 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?

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

Which city has the most climate adaptation consultants?

New York leads with 48 company records, followed by Washington (47) and San Francisco (20).

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 7,033 professional contacts with verified work emails tracked across these 754 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.