Company lists · Data refreshed September 2026

Top 25 Environmental consultant firms based in Australia

Name: Environmental consultant firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 21, 2026 768 companies tracked

RevenueBase identified 768 environmental consultant firms headquartered in Australia as of September 2026 and tracks 10,562 professional contacts across them, including 5,760 with verified work emails. Melbourne is the largest hub.

This list covers environmental consultant firms headquartered in Australia, 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 21, 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 21, 2026 86% judged on-target in blind review

768Companies

10,562Contacts tracked

5,760Verified emails

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The 25 largest environmental consultant firms based in Australia

Ranked by team size

Top 25 of 768 environmental consultant firms based in Australia, ranked by team size, largest first. Data refreshed Sep 21, 2026. RevenueBase Smart Search rates how each company's information relates to environmental consultant 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	Cardno	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 21, 2026	1,001-5,000	985 contacts →
	Indirect evidence “Cardno is now officially Stantec.” Source: RevenueBase Database · checked Sep 21, 2026
2	ADP Consulting	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	468 contacts →
	Partial evidence “ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.” Source: RevenueBase Database · checked Sep 21, 2026
3	EMM Consulting PTY Limited	Indirect evidence	St Leonards, AustraliaHQ checked Sep 21, 2026	201-500	361 contacts →
	Indirect evidence “At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.” Source: RevenueBase Database · checked Sep 21, 2026
4	Umwelt Environmental & Social Consultants	Indirect evidence	Teralba, AustraliaHQ checked Sep 21, 2026	201-500	329 contacts →
	Indirect evidence “Umwelt has been trusted by clients and communities for over 30 years.” Source: RevenueBase Database · checked Sep 21, 2026
5	Pitt&sherry	Strong evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	317 contacts →
	Strong evidence “pitt & sherry is an Australian-owned engineering and environmental consultancy.” Source: RevenueBase Database · checked Sep 21, 2026
6	Jbs&g	Strong evidence	Sydney, AustraliaHQ checked Sep 21, 2026	201-500	262 contacts →
	Strong evidence “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Source: RevenueBase Database · checked Sep 21, 2026
7	Engeny	Strong evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	201-500	216 contacts →
	Strong evidence “Now a part of the Egis Group, Engeny provides a wide range of specialist engineering and environmental consultancy services across disciplines.” Source: RevenueBase Database · checked Sep 21, 2026
8	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 21, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 21, 2026
9	Senversa	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	181 contacts →
	Partial evidence “Senversa is an Australian, employee-owned environmental, engineering & sustainability professional services firm, specialising in the provision of environmental approvals, ground…” Source: RevenueBase Database · checked Sep 21, 2026
10	MEC	Indirect evidence	Brisbane City, AustraliaHQ checked Sep 21, 2026	51-200	163 contacts →
	Indirect evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 21, 2026
11	Alluvium Group	Indirect evidence	East Melbourne, AustraliaHQ checked Sep 21, 2026	201-500	141 contacts →
	Indirect evidence “The Alluvium Group is an employee-owned consulting practice founded in 2006 to provide advice to government and private organisations on issues impacting on the build and natural…” Source: RevenueBase Database · checked Sep 21, 2026
12	Biosis PTY LTD	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	136 contacts →
	Partial evidence “Biosis is a team of qualified and professional consultants, experienced in and passionate about ecology and cultural heritage.” Source: RevenueBase Database · checked Sep 21, 2026
13	Alliance Geotechnical	Strong evidence	Seven Hills, AustraliaHQ checked Sep 21, 2026	51-200	120 contacts →
	Strong evidence “Alliance Geotechnical is an established and highly respected Geotechnical and Environmental consultancy firm with a proven track record in delivering and exceeding our client’s…” Source: RevenueBase Database · checked Sep 21, 2026
14	Talis Consultants	Partial evidence	Leederville, AustraliaHQ checked Sep 21, 2026	51-200	108 contacts →
	Partial evidence “Talis Consultants is now operating throughout Australia.” Source: RevenueBase Database · checked Sep 21, 2026
15	Ecosure	Strong evidence	Burleigh Heads, AustraliaHQ checked Sep 21, 2026	51-200	105 contacts →
	Strong evidence “Ecosure is the largest specialist privately owned environmental consultancy in Queensland, providing services across Australia and the Pacific to major projects, business…” Source: RevenueBase Database · checked Sep 21, 2026
16	Earth Systems	Partial evidence	Port Melbourne, AustraliaHQ checked Sep 21, 2026	51-200	101 contacts →
	Partial evidence “At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.” Source: RevenueBase Database · checked Sep 21, 2026
17	Epic Environmental	Partial evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	51-200	94 contacts →
	Partial evidence “Epic offers industry leading environmental solutions to national and selected international markets.” Source: RevenueBase Database · checked Sep 21, 2026
18	Xenith	Indirect evidence	Brisbane, AustraliaHQ checked Sep 21, 2026	51-200	92 contacts →
	Indirect evidence “Xenith is an established consulting firm that delivers outstanding exploration, mine planning, operational and financial solutions to resources companies in Australia and around…” Source: RevenueBase Database · checked Sep 21, 2026
19	Emerge Associates	Strong evidence	Perth, AustraliaHQ checked Sep 21, 2026	51-200	91 contacts →
	Strong evidence “Emerge Associates are landscape architects and environmental consultants, integrating science and design to create great spaces, manage sensitive places and foster thriving…” Source: RevenueBase Database · checked Sep 21, 2026
20	CETEC	Partial evidence	Melbourne, AustraliaHQ checked Sep 21, 2026	11-50	81 contacts →
	Partial evidence “CETEC is an independent consultancy delivering scientific and technical solutions.” Source: RevenueBase Database · checked Sep 21, 2026
21	Natural Area	Partial evidence	Malaga, AustraliaHQ checked Sep 21, 2026	51-200	76 contacts →
	Partial evidence “Natural Area is a wholly Western Australian owned and operated company providing environmental consulting and on-ground environmental management to government, property…” Source: RevenueBase Database · checked Sep 21, 2026
22	Pinion Advisory	Strong evidence	Clare, AustraliaHQ checked Sep 21, 2026	51-200	70 contacts →
	Strong evidence “As an Australian-owned consultancy company specialising in agribusiness, water and environment, Pinion Advisory unlocks the potential in our people, our clients and our natural…” Source: RevenueBase Database · checked Sep 21, 2026
23	Opec Systems	Partial evidence	Lennox Head, AustraliaHQ checked Sep 21, 2026	51-200	70 contacts →
	Partial evidence “Public and private sector organisations across the globe choose OPEC Systems to creatively and intelligently solve their environmental engineering challenges.” Source: RevenueBase Database · checked Sep 21, 2026
24	Ecology And Heritage Partners PTY LTD	Indirect evidence	Ascot Vale, AustraliaHQ checked Sep 21, 2026	51-200	68 contacts →
	Indirect evidence “Thank you for visiting Ecology and Heritage Partners.” Source: RevenueBase Database · checked Sep 21, 2026
25	Hydrobiology	Partial evidence	Milton, AustraliaHQ checked Sep 21, 2026	11-50	67 contacts →
	Partial evidence “Hydrobiology is an Environmental Consulting Company offering integrated services in the physical, biological and chemical processes of environmental systems with a particular…” Source: RevenueBase Database · checked Sep 21, 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: environmental consultant 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 environmental consultant firms.
Partial evidence: Its own public description names part of environmental consultant firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consultant 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 768 environmental consultant firms based in Australia

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Environmental consultant firms based in Australia at a glance

As of Sep 21, 2026

54.5%Verified-email coverage

13.8Average contacts per company

1-10Median size (employees)

8.2%Largest-city concentration · Melbourne

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

495

11-50

213

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 768 companies.

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 environmental consultant 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 Australia whose own description of what they do matches “environmental consultant 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 environmental consultant 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 environmental consultant firms, and records with no verified work email. Companies headquartered outside Australia 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, 5,760 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 21, 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.

Environmental consultant firms by metro

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 environmental consultant 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 environmental consultant firms are there based in Australia?

RevenueBase identified 768 environmental consultant firms headquartered in Australia 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?

Cardno, headquartered in Fortitude Valley, tops this list with the largest team on record.

Which city has the most environmental consultant firms?

Melbourne leads with 63 headquartered companies, followed by Perth (60) and Sydney (57).

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 5,760 verified decision-maker contacts tracked across these 768 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 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 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.