Company lists · Data refreshed September 2026

Top 25 Ecological consulting firms based in Australia

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

Compiled by the RevenueBase Data Team Data refreshed Sep 1, 2026 697 companies tracked

RevenueBase identified 697 company matches for ecological consulting firms associated with Australia as of September 2026 and tracks 7,534 professional contacts across them, including 4,009 with verified work emails and 636 with mobile numbers. Melbourne is the largest hub.

This list covers company matches for ecological consulting firms associated with Australia, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 1, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 SmartSearch · Exact Recorded Sep 1, 2026 How this list was built

697Companies

7,534Contacts tracked

4,009Verified emails

636Mobile numbers

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The 25 largest ecological consulting firms based in Australia

Ranked by team size

Top 25 of 697 company matches for ecological consulting firms based in Australia, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 1, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Umwelt Environmental & Social Consultants	Exact match	Melbourne, Australia	201-500	326 contacts →
	Exact match “Umwelt has been trusted by clients and communities for over 30 years.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
2	Jbs&g	Exact match	Perth, Australia	201-500	264 contacts →
	Exact match “Established in 1996, JBS & G is one of Australia’s leading environmental consultancies with offices in Sydney, Melbourne, Perth, Adelaide, Brisbane, Canberra, Darwin, Wollongong…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
3	Intera Incorporated	Exact match	Perth, Australia	201-500	261 contacts →
	Exact match “Established in 1974, INTERA is a geosciences and engineering consulting firm focused on providing water resources and supply, environmental, mining, radioactive waste isolation…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
4	ECO Logical Australia PTY LTD	Exact match	Huskisson, Australia	201-500	221 contacts →
	Exact match “We exist to empower people to make a difference.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
5	Alluvium Group	Exact match	Fortitude Valley, Australia	201-500	141 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
6	Biosis PTY LTD	Exact match	Wollongong, Australia	51-200	136 contacts →
	Exact match “Biosis is a team of qualified and professional consultants, experienced in and passionate about ecology and cultural heritage.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
7	NICHE	Exact match	Bulli, Australia	51-200	134 contacts →
	Exact match “Niche is the largest privately-owned specialist biodiversity and heritage consultancy in Australia.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
8	Ecosure	Exact match	Mawson Lakes, Australia	51-200	104 contacts →
	Exact match “Ecosure is the largest specialist privately owned environmental consultancy in Queensland, providing services across Australia and the Pacific to major projects, business…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
9	Toolijooa Environmental Restoration	Exact match	West Hoxton, Australia	51-200	101 contacts →
	Exact match “Toolijooa Environmental Restoration is a leading provider of environmental management and restoration services throughout the Greater Sydney Region, the Hunter and beyond.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
10	Emerge Associates	Exact match	Perth, Australia	51-200	91 contacts →
	Exact match “Emerge Associates are landscape architects and environmental consultants, integrating science and design to create great spaces, manage sensitive places and foster thriving…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
11	RMCG	Exact match	Camberwell, Australia	51-200	79 contacts →
	Exact match “Bringing clarity to complexity.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
12	Pinion Advisory	Exact match	Mildura, Australia	51-200	77 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
13	Natural Area	Exact match	Whiteman, Australia	51-200	76 contacts →
	Exact match “Natural Area is a wholly Western Australian owned and operated company providing environmental consulting and on-ground environmental management to government, property…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
14	Opec Systems	Exact match	Hemmant, Australia	51-200	69 contacts →
	Exact match “Public and private sector organisations across the globe choose OPEC Systems to creatively and intelligently solve their environmental engineering challenges.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
15	Ecology And Heritage Partners PTY LTD	Exact match	Turner, Australia	51-200	67 contacts →
	Exact match “Thank you for visiting Ecology and Heritage Partners.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
16	Nature Advisory	Exact match	Hawthorn East, Australia	51-200	64 contacts →
	Exact match “Nature Advisory is an independent ecological consultancy that proactively balances project outcomes with biodiversity protection.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
17	Acacia Environmental Management	Exact match	St. Andrews, Australia	201-500	59 contacts →
	Exact match “OUR MISSION IS TO PROTECT NATURES GREATEST CAPITAL Acacia remains committed to helping government, industry, business and communities use and enjoy the natural environment for…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
18	Barnson PTY LTD	Exact match	Baulkham Hills, Australia	51-200	57 contacts →
	Exact match “Barnson Pty Ltd is an independent multi-disciplinary consulting firm offering professional services in the fields of town planning, bushfire assessments, landscape architecture…” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
19	PTG Consulting	Exact match	Ashmore, Australia	51-200	53 contacts →
	Exact match “With a suite of highly skilled engineers, PTG Consulting provides clients with the benefit of diverse and extensive experience and customised forward-thinking solutions.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
20	Ecocene	Exact match	Margaret River, Australia	51-200	52 contacts →
	Exact match “Ecocene combines ecological expertise with data intelligence to build conservation economies.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
21	Western Environmental	Exact match	Richmond, Australia	51-200	52 contacts →
	Exact match “We’re extraordinary consultants who protect and enhance the environment and value our community.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
22	Environmental Earth Sciences International Eesi	Exact match	Chatswood, Australia	51-200	49 contacts →
	Exact match “EESI Group, a leader in brown environment consulting, serves the mining, waste & landfill, urban development, and farming sectors across Australia and the UK.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
23	O2marine	Exact match	Geraldton, Australia	51-200	48 contacts →
	Exact match “O2 Marine provides clients with efficient and high quality environmental and project outcomes.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
24	EDP Consultants Australia	Exact match	St Leonards, Australia	51-200	46 contacts →
	Exact match “As part of the RSK Group, EDP Consultants (EDP) is a boutique provider of Environmental and Occupational Hygiene solutions across a broad range of industry sectors.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase
25	ENV Solutions	Exact match	Coffs Harbour, Australia	51-200	35 contacts →
	Exact match “ENV Solutions provide tailor-made solutions to complex environmental issues.” Recorded in the RevenueBase company graph · Sep 1, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “ecological consulting firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 697 ecological consulting firms based in Australia

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Ecological consulting firms based in Australia at a glance

As of Sep 1, 2026

53.2%Verified-email coverage

8.4%Mobile-number coverage

10.8Average contacts per company

1-10Median size (employees)

7.7%Largest-city concentration · Melbourne

Sep 1, 2026Page data refreshed

Companies by employee count

1-10

461

11-50

182

51-200

201-500

501-1,000

1,001-5,000

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Australia whose business descriptions match “ecological consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 4,009 professional contacts with verified work emails across the full matched dataset. 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 1, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Ecological consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “ecological consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many ecological consulting firms are there based in Australia?

RevenueBase identified 697 company matches for ecological consulting firms associated with Australia as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Umwelt Environmental & Social Consultants tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most ecological consulting firms?

Melbourne leads with 54 company records, followed by Perth (45) and Sydney (44).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 4,009 professional contacts with verified work emails tracked across these 697 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 1, 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 SmartSearch, 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.