Company lists · Data verified August 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 Verified Aug 28, 2026 1,035 companies tracked

There are 1,035 environmental consulting firms headquartered in Australia (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Tonkin Taylor	Southbank	1,001-5,000	952	799
2	FYFE	Alice Springs	501-1,000	471	272
3	Umwelt Environmental & Social Consultants	Melbourne	201-500	326	234
4	Pitt&sherry	Brisbane	201-500	315	225
5	Jbs&g	Perth	201-500	264	225
6	Intera Incorporated	Perth	201-500	261	188
7	Enviropacific	Forrestfield	201-500	259	222
8	Tonkin	Spring Hill	201-500	234	183
9	ECO Logical Australia PTY LTD	Huskisson	201-500	221	119
10	Engeny	Melbourne	201-500	215	158
11	Senversa	Adelaide	201-500	181	152
12	MEC	West Perth	51-200	162	73
13	Premise	Rockhampton City	51-200	150	112
14	Baird & Associates	Sydney	51-200	142	93
15	Alluvium Group	Fortitude Valley	201-500	141	106
16	Mckenzie Group Consulting	Sydney	51-200	139	79
17	Biosis PTY LTD	Wollongong	51-200	136	100
18	Envirolab Group	Adelaide	201-500	129	95
19	Alliance Geotechnical	Seven Hills	51-200	119	79
20	Mining ONE Consultants	Adelaide	51-200	117	70
21	Talis Consultants	Nowra	51-200	110	62
22	Ecosure	Mawson Lakes	51-200	104	57
23	Epic Environmental	Adelaide	51-200	99	86
24	Burchills Engineering Solutions	Scarborough	51-200	99	79
25	EI Australia	Pyrmont	51-200	93	56

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 Aug 28, 2026

1-10Median size (employees)

MelbourneLargest hub · 88 HQs

1,061Contacts with mobile numbers

0Emails re-verified in last 30 days

Companies by employee count

1-10

656

11-50

279

51-200

201-500

501-1,000

1,001-5,000

Environmental consulting firms by metro

Metro	Companies
Environmental consulting firms in Melbourne	88
Environmental consulting firms in Perth	80
Environmental consulting firms in Sydney	78
Environmental consulting firms in Brisbane	65
Environmental consulting firms in Adelaide	27
Environmental consulting firms in Newcastle	17
Environmental consulting firms in Gold Coast	13

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “environmental consulting firms”, with match quality audited by blind human judging, and headquartered in Australia.
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: Contact records re-verify on a rolling cadence; 0 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many environmental consulting firms are there based in Australia?

There are 1,035 environmental consulting firms headquartered in Australia as of August 2026 (RevenueBase).

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 is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 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, the same data that powers RevenueBase's B2B data products and the free research portal.