Company lists · Data refreshed September 2026

Top 25 Environmental consultancy firms based in Australia

Name: Environmental consultancy 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 1,338 companies tracked

RevenueBase identified 1,338 environmental consultancy firms headquartered in Australia as of September 2026 and tracks 20,112 professional contacts across them, including 9,556 with verified work emails and 1,242 with mobile numbers. Melbourne is the largest hub.

This list covers environmental consultancy 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

1,338Companies

20,112Contacts tracked

9,556Verified emails

1,242Mobile numbers

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The 25 largest environmental consultancy firms based in Australia

Ranked by team size

Top 25 of 1,338 environmental consultancy 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 consultancy 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	Calibre	Indirect evidence	Perth, Australia	1,001-5,000	668 contacts →
	Indirect evidence “Calibre was acquired by WSP.” 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	Strong evidence	Brisbane, Australia	201-500	315 contacts →
	Strong evidence “pitt & sherry is an Australian-owned engineering and environmental consultancy.” Source: RevenueBase Database · checked Sep 2, 2026
5	Abbott Risk Consulting	Partial evidence	Melbourne, Australia	51-200	267 contacts →
	Partial evidence “Abbott Risk Consulting (ARC) is a dynamic safety engineering consultancy with a world-wide reputation for delivering quality solutions to the nuclear, defence, oil and gas…” Source: RevenueBase Database · checked Sep 2, 2026
6	Jbs&g	Strong evidence	Perth, Australia	201-500	264 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 2, 2026
7	Intera Incorporated	Partial evidence	Perth, Australia	201-500	261 contacts →
	Partial 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
8	Tonkin	Strong evidence	Spring Hill, Australia	201-500	234 contacts →
	Strong 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	Strong evidence	Melbourne, Australia	201-500	215 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 2, 2026
11	FMG Engineering	Partial evidence	Wayville, Australia	51-200	199 contacts →
	Partial evidence “FMG Engineering is an award winning multi-disciplinary Engineering Consultancy providing services and solutions to the development, property and urban infrastructure sectors.” Source: RevenueBase Database · checked Sep 2, 2026
12	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
13	Edge Consulting Engineers	Strong evidence	Tweed Heads South, Australia	51-200	177 contacts →
	Strong evidence “We're an engineering consultancy, specialising in civil, geo-environmental and structural engineering.” Source: RevenueBase Database · checked Sep 2, 2026
14	MEC	Indirect evidence	West Perth, Australia	51-200	162 contacts →
	Indirect evidence “MEC is a leading global technical consulting firm dedicated to servicing the mining industry.” Source: RevenueBase Database · checked Sep 2, 2026
15	Civil & Structural Engineering Consultants PVT LTD	Partial evidence	Melbourne, Australia	201-500	152 contacts →
	Partial evidence “Civil and Structural Engineering Consultants (Pvt) Ltd, more commonly known as ‘CSE Consultants’ is a state of the art Engineering consultancy firm comprising some of the…” Source: RevenueBase Database · checked Sep 2, 2026
16	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
17	Alluvium Group	Indirect evidence	Fortitude Valley, Australia	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 2, 2026
18	Biosis PTY LTD	Partial evidence	Wollongong, Australia	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 2, 2026
19	NICHE	Partial evidence	Bulli, Australia	51-200	134 contacts →
	Partial evidence “Niche is the largest privately-owned specialist biodiversity and heritage consultancy in Australia.” Source: RevenueBase Database · checked Sep 2, 2026
20	RED Earth Engineering A Geosyntec Company	Strong evidence	Spring Hill, Australia	51-200	114 contacts →
	Strong evidence “Red Earth Engineering (REE) is a specialist consultancy offering services in geotechnical, environmental and civil engineering with specialist application to Tailings Dams and…” Source: RevenueBase Database · checked Sep 2, 2026
21	Talis Consultants	Partial evidence	Nowra, Australia	51-200	110 contacts →
	Partial evidence “Talis Consultants is now operating throughout Australia.” Source: RevenueBase Database · checked Sep 2, 2026
22	The Gild Group	Indirect evidence	Mooloolaba, Australia	51-200	108 contacts →
	Indirect evidence “The Gild Group is one of Australia’s fastest growing fully integrated multidisciplinary professional services firms with a comprehensive suite of best-in-class services.” Source: RevenueBase Database · checked Sep 2, 2026
23	ADW Johnson PTY LTD	Indirect evidence	Warners Bay, Australia	51-200	100 contacts →
	Indirect evidence “As a medium sized operation, ADW Johnson has the flexibility to ensure every project receives the individual attention of a senior member of our team.” Source: RevenueBase Database · checked Sep 2, 2026
24	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
25	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

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 consultancy 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 consultancy firms.
Partial evidence: Its own public description names part of environmental consultancy firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name environmental consultancy 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 1,338 environmental consultancy firms based in Australia

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Environmental consultancy firms based in Australia at a glance

As of Sep 2, 2026

47.5%Verified-email coverage

6.2%Mobile-number coverage

15.0Average contacts per company

1-10Median size (employees)

8.9%Largest-city concentration · Melbourne

Sep 2, 2026Page data refreshed

Companies by employee count

1-10

858

11-50

348

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

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 consultancy 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 consultancy 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 consultancy 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 consultancy 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, 9,556 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 consultancy 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 consultancy 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 consultancy firms are there based in Australia?

RevenueBase identified 1,338 environmental consultancy 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 consultancy firms?

Melbourne leads with 119 headquartered companies, followed by Sydney (108) and Perth (95).

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 9,556 verified decision-maker contacts tracked across these 1,338 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.