Company lists · Data verified August 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 Verified Aug 28, 2026 1,338 companies tracked

There are 1,338 environmental consultancy firms headquartered in Australia (RevenueBase, August 2026). RevenueBase 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. Data current as of August 28, 2026.

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 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	Calibre	Perth	1,001-5,000	668	116
3	Umwelt Environmental & Social Consultants	Melbourne	201-500	326	234
4	Pitt&sherry	Brisbane	201-500	315	225
5	Abbott Risk Consulting	Melbourne	51-200	267	129
6	Jbs&g	Perth	201-500	264	225
7	Intera Incorporated	Perth	201-500	261	188
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	FMG Engineering	Wayville	51-200	199	113
12	Senversa	Adelaide	201-500	181	152
13	Edge Consulting Engineers	Tweed Heads South	51-200	177	95
14	MEC	West Perth	51-200	162	73
15	Civil & Structural Engineering Consultants PVT LTD	Melbourne	201-500	152	2
16	Premise	Rockhampton City	51-200	150	112
17	Alluvium Group	Fortitude Valley	201-500	141	106
18	Biosis PTY LTD	Wollongong	51-200	136	100
19	NICHE	Bulli	51-200	134	86
20	RED Earth Engineering A Geosyntec Company	Spring Hill	51-200	114	68
21	Talis Consultants	Nowra	51-200	110	62
22	The Gild Group	Mooloolaba	51-200	108	77
23	ADW Johnson PTY LTD	Warners Bay	51-200	100	69
24	Epic Environmental	Adelaide	51-200	99	86
25	Burchills Engineering Solutions	Scarborough	51-200	99	79

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 Aug 28, 2026

1-10Median size (employees)

MelbourneLargest hub · 119 HQs

1,242Contacts with mobile numbers

0Emails re-verified in last 30 days

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

Environmental consultancy firms by metro

Metro	Companies
Environmental consultancy firms in Melbourne	119
Environmental consultancy firms in Sydney	108
Environmental consultancy firms in Perth	95
Environmental consultancy firms in Brisbane	89
Environmental consultancy firms in Adelaide	33
Environmental consultancy firms in Newcastle	23
Environmental consultancy firms in Hobart	14

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 consultancy 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 consultancy firms are there based in Australia?

There are 1,338 environmental consultancy 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 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 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.