Company lists · Data refreshed September 2026

Top 25 Environmental consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 2, 2026 1,035 companies tracked

RevenueBase identified 1,035 environmental consulting firms headquartered in Australia as of September 2026 and tracks 16,512 professional contacts across them, including 8,190 with verified work emails and 1,061 with mobile numbers. Melbourne is the largest hub.

This list covers environmental consulting 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 2, 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 RevenueBase Smart Search rating on every row Refreshed Sep 2, 2026 86% judged on-target in blind review

1,035Companies

16,512Contacts tracked

8,190Verified emails

1,061Mobile numbers

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The 25 largest environmental consulting firms based in Australia

Ranked by team size

Top 25 of 1,035 environmental consulting firms based in Australia, ranked by team size, largest first. Data refreshed Sep 2, 2026. RevenueBase Smart Search rates how each company's information relates to environmental 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	Tonkin Taylor	Indirect evidence	Southbank, Australia	1,001-5,000	952 contacts →
	Indirect evidence “At Tonkin + Taylor, we’re dedicated to creating and sustaining a better world together.” Source: RevenueBase Database · checked Sep 2, 2026
2	FYFE	Partial evidence	Alice Springs, Australia	501-1,000	471 contacts →
	Partial evidence “Fyfe is an Australian professional services firm that delivers value through integrated engineering, environmental, planning and surveying services.” Source: RevenueBase Database · checked Sep 2, 2026
3	Umwelt Environmental & Social Consultants	Indirect evidence	Melbourne, Australia	201-500	326 contacts →
	Indirect evidence “Umwelt has been trusted by clients and communities for over 30 years.” Source: RevenueBase Database · checked Sep 2, 2026
4	Pitt&sherry	Partial evidence	Brisbane, Australia	201-500	315 contacts →
	Partial evidence “pitt & sherry is an Australian-owned engineering and environmental consultancy.” Source: RevenueBase Database · checked Sep 2, 2026
5	Jbs&g	Partial evidence	Perth, Australia	201-500	264 contacts →
	Partial 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 2, 2026
6	Intera Incorporated	Strong evidence	Perth, Australia	201-500	261 contacts →
	Strong evidence “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Source: RevenueBase Database · checked Sep 2, 2026
7	Enviropacific	Partial evidence	Forrestfield, Australia	201-500	259 contacts →
	Partial evidence “Enviropacific is committed to working towards creating safer environments and sustainable communities.” Source: RevenueBase Database · checked Sep 2, 2026
8	Tonkin	Partial evidence	Spring Hill, Australia	201-500	234 contacts →
	Partial evidence “Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.” Source: RevenueBase Database · checked Sep 2, 2026
9	ECO Logical Australia PTY LTD	Indirect evidence	Huskisson, Australia	201-500	221 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 2, 2026
10	Engeny	Partial evidence	Melbourne, Australia	201-500	215 contacts →
	Partial 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 2, 2026
11	Senversa	Partial evidence	Adelaide, Australia	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 2, 2026
12	MEC	Partial evidence	West Perth, Australia	51-200	162 contacts →
	Partial evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 2, 2026
13	Premise	Indirect evidence	Rockhampton City, Australia	51-200	150 contacts →
	Indirect evidence “Premise is now part of Amey and operates as Amey Australia.” Source: RevenueBase Database · checked Sep 2, 2026
14	Baird & Associates	Partial evidence	Sydney, Australia	51-200	142 contacts →
	Partial evidence “Coastal, Marine, and Environmental Engineering.” Source: RevenueBase Database · checked Sep 2, 2026
15	Alluvium Group	Partial evidence	Fortitude Valley, Australia	201-500	141 contacts →
	Partial 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 2, 2026
16	Mckenzie Group Consulting	Partial evidence	Sydney, Australia	51-200	139 contacts →
	Partial evidence “Backed by global leader Bureau Veritas, McKenzie Group Consulting is a team of 120+ talented, skilled and passionate professionals.” Source: RevenueBase Database · checked Sep 2, 2026
17	Biosis PTY LTD	Indirect evidence	Wollongong, Australia	51-200	136 contacts →
	Indirect evidence “Biosis is a team of qualified and professional consultants, experienced in and passionate about ecology and cultural heritage.” Source: RevenueBase Database · checked Sep 2, 2026
18	Envirolab Group	Partial evidence	Adelaide, Australia	201-500	129 contacts →
	Partial evidence “Envirolab Group offers a wide array of environment testing and analytical services to support investigations of inorganic and organic contaminants and pollutants.” Source: RevenueBase Database · checked Sep 2, 2026
19	Alliance Geotechnical	Partial evidence	Seven Hills, Australia	51-200	119 contacts →
	Partial 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 2, 2026
20	Mining ONE Consultants	Indirect evidence	Adelaide, Australia	51-200	117 contacts →
	Indirect evidence “Mining One was established in August 2005 to provide technical expertise in the fields of geotechnical engineering, resource geology, mining engineering, processing, numerical…” Source: RevenueBase Database · checked Sep 2, 2026
21	Talis Consultants	Indirect evidence	Nowra, Australia	51-200	110 contacts →
	Indirect evidence “Talis Consultants is now operating throughout Australia.” Source: RevenueBase Database · checked Sep 2, 2026
22	Ecosure	Partial evidence	Mawson Lakes, Australia	51-200	104 contacts →
	Partial 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 2, 2026
23	Epic Environmental	Partial evidence	Adelaide, Australia	51-200	99 contacts →
	Partial evidence “Epic offers industry leading environmental solutions to national and selected international markets.” Source: RevenueBase Database · checked Sep 2, 2026
24	Burchills Engineering Solutions	Indirect evidence	Scarborough, Australia	51-200	99 contacts →
	Indirect evidence “Burchills Engineering Solutions is a South East Qld based, locally owned multidisciplinary team of professional engineers & scientists with a track record of helping clients…” Source: RevenueBase Database · checked Sep 2, 2026
25	EI Australia	Partial evidence	Pyrmont, Australia	51-200	93 contacts →
	Partial evidence “Welcome to EI Australia an Australian-owned, ISO 9001, 14001 & 4801 Certified, professional services company providing Environmental, Geotechnical and Structural engineering…” Source: RevenueBase Database · checked Sep 2, 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 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 environmental consulting firms.
Partial evidence: Its own public description names part of environmental consulting firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental 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 1,035 environmental consulting firms based in Australia

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Environmental consulting firms based in Australia at a glance

As of Sep 2, 2026

49.6%Verified-email coverage

6.4%Mobile-number coverage

16.0Average contacts per company

1-10Median size (employees)

8.5%Largest-city concentration · Melbourne

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

656

11-50

279

51-200

201-500

501-1,000

1,001-5,000

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 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 Australia whose own description of what they do matches “environmental 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 environmental 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 environmental consulting 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, 8,190 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 2, 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 consulting firms by metro

Environmental consulting firms in Melbourne88
Environmental consulting firms in Perth80
Environmental consulting firms in Sydney78
Environmental consulting firms in Brisbane65
Environmental consulting firms in Adelaide27

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 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 environmental consulting firms are there based in Australia?

RevenueBase identified 1,035 environmental consulting 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?

Tonkin Taylor, headquartered in Southbank, tops this list with the largest team on record.

Which city has the most environmental consulting firms?

Melbourne leads with 88 headquartered companies, followed by Perth (80) and Sydney (78).

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 8,190 verified decision-maker contacts tracked across these 1,035 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 2, 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.