Company lists · Data refreshed September 2026

Top 24 Sustainable design consultants based in Australia

RevenueBase identified 1,101 sustainable design consultants headquartered in Australia as of September 2026 and tracks 12,062 professional contacts across them, including 5,833 with verified work emails. Sydney is the largest hub.

This list covers sustainable design consultants 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 22, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review
1,101Companies
12,062Contacts tracked
5,833Verified emails
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The 24 largest sustainable design consultants based in Australia

Ranked by team size
Top 24 of 1,101 sustainable design consultants based in Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable design consultants: 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMelbourne, AustraliaHQ checked Sep 22, 2026501-1,0001,096 contacts →

Partial evidence

“Urbis is more than just a consultancy.”

Source: RevenueBase Database · checked Sep 22, 2026
2Indirect evidenceFortitude Valley, AustraliaHQ checked Sep 22, 20261,001-5,000985 contacts →

Indirect evidence

“Cardno is now officially Stantec.”

Source: RevenueBase Database · checked Sep 22, 2026
3Strong evidenceMelbourne, AustraliaHQ checked Sep 22, 2026201-500468 contacts →

Strong evidence

“ADP Consulting, an Ayesa company, is a sustainability-led engineering consultancy on a quest to inspire a better world through influence and design.”

Source: RevenueBase Database · checked Sep 22, 2026
4Partial evidenceSt Leonards, AustraliaHQ checked Sep 22, 2026201-500361 contacts →

Partial evidence

“At EMM, we believe that a sustainable future is achievable, and we are dedicated to helping our clients and the community make it a reality.”

Source: RevenueBase Database · checked Sep 22, 2026
5Indirect evidenceTeralba, AustraliaHQ checked Sep 22, 2026201-500329 contacts →

Indirect evidence

“Umwelt has been trusted by clients and communities for over 30 years.”

Source: RevenueBase Database · checked Sep 22, 2026
6Partial evidenceSydney, AustraliaHQ checked Sep 22, 2026201-500293 contacts →

Partial evidence

“GHD Design empowers transformation at the speed of change.”

Source: RevenueBase Database · checked Sep 22, 2026
7Indirect evidenceSydney, AustraliaHQ checked Sep 22, 2026201-500211 contacts →

Indirect evidence

“We exist to empower people to make a difference.”

Source: RevenueBase Database · checked Sep 22, 2026
8Indirect evidencePerth, AustraliaHQ checked Sep 22, 2026201-500188 contacts →

Indirect evidence

“We are passionate about engineering the future by solving the world's natural resource challenges.”

Source: RevenueBase Database · checked Sep 22, 2026
9Strong evidenceBrisbane, AustraliaHQ checked Sep 22, 202651-200149 contacts →

Strong evidence

“Cottee Parker is a design consultancy shaping places, relationships and outcomes across Australia and Aotearoa New Zealand.”

Source: RevenueBase Database · checked Sep 22, 2026
10Partial evidenceNorth Sydney, AustraliaHQ checked Sep 22, 202651-200121 contacts →

Partial evidence

“Building Services Engineers (BSE) is a 100% Australian-owned national engineering consultancy established in 1994.”

Source: RevenueBase Database · checked Sep 22, 2026
11Indirect evidenceCremorne, AustraliaHQ checked Sep 22, 202651-200106 contacts →

Indirect evidence

“For more than 30 years, we’ve worked across Australia to deliver integrated solutions that balance the needs of growth, community and the environment.”

Source: RevenueBase Database · checked Sep 22, 2026
12Indirect evidencePort Melbourne, AustraliaHQ checked Sep 22, 202651-200101 contacts →

Indirect evidence

“At Earth Systems, we believe that solving the world’s environmental challenges requires more than just knowledge-it takes innovation and action.”

Source: RevenueBase Database · checked Sep 22, 2026
13Partial evidenceAlexandria, AustraliaHQ checked Sep 22, 202651-20096 contacts →

Partial evidence

“Integrated Group Services (IGS) provide Integrated, Sustainable, Solutions.”

Source: RevenueBase Database · checked Sep 22, 2026
14Indirect evidenceNorth Sydney, AustraliaHQ checked Sep 22, 202651-20094 contacts →

Indirect evidence

“Energetics is the climate risk and energy transition expert.”

Source: RevenueBase Database · checked Sep 22, 2026
15Partial evidenceSydney, AustraliaHQ checked Sep 22, 202651-20084 contacts →

Partial evidence

“Where Engineering & Science Inspire Design.”

Source: RevenueBase Database · checked Sep 22, 2026
16Indirect evidenceSydney, AustraliaHQ checked Sep 22, 202651-20084 contacts →

Indirect evidence

“Edge Impact exists to create a world where unsustainable is unthinkable.”

Source: RevenueBase Database · checked Sep 22, 2026
17Partial evidenceMelbourne, AustraliaHQ checked Sep 22, 202611-5081 contacts →

Partial evidence

“CETEC is an independent consultancy delivering scientific and technical solutions.”

Source: RevenueBase Database · checked Sep 22, 2026
18Partial evidenceMelbourne, AustraliaHQ checked Sep 22, 202651-20080 contacts →

Partial evidence

“Rennie provides strategy, ESG & sustainability, capital advisory, policy and reform, and business advisory services.”

Source: RevenueBase Database · checked Sep 22, 2026
19Indirect evidenceMelbourne, AustraliaHQ checked Sep 22, 202651-20072 contacts →

Indirect evidence

“Nation Partners isn’t your typical consulting firm.”

Source: RevenueBase Database · checked Sep 22, 2026
20Indirect evidenceToowoomba, AustraliaHQ checked Sep 22, 202651-20070 contacts →

Indirect evidence

“RMA is an energetic, multi-disciplinary consulting firm that provides tailored solutions with a personalised approach.”

Source: RevenueBase Database · checked Sep 22, 2026
21Partial evidencePerth, AustraliaHQ checked Sep 22, 202651-20056 contacts →

Partial evidence

“JDSi is an engineering consultancy specialising in urban development and infrastructure projects.”

Source: RevenueBase Database · checked Sep 22, 2026
22Indirect evidenceAdelaide, AustraliaHQ checked Sep 22, 202651-20054 contacts →

Indirect evidence

“We are a consulting engineering firm focused on bringing buildings to life.”

Source: RevenueBase Database · checked Sep 22, 2026
23Partial evidenceDrummoyne, AustraliaHQ checked Sep 22, 202611-5051 contacts →

Partial evidence

“MRA Consulting Group is one of Australia’s leading environmental consultancy firms, specialising in business and policy reform.”

Source: RevenueBase Database · checked Sep 22, 2026
24Indirect evidenceChatswood, AustraliaHQ checked Sep 22, 202651-20049 contacts →

Indirect evidence

“EESI Group, a leader in brown environment consulting, serves the mining, waste & landfill, urban development, and farming sectors across Australia and the UK.”

Source: RevenueBase Database · checked Sep 22, 2026

Showing 24 of 1,101 sustainable design consultants based in Australia

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Sustainable design consultants based in Australia at a glance

As of Sep 22, 2026
48.4%Verified-email coverage
11.0Average contacts per company
1-10Median size (employees)
13.0%Largest-city concentration · Sydney
Sep 22, 2026Page data refreshed

Companies by employee count

1-10
821
11-50
212
51-200
45
201-500
7
501-1,000
3
1,001-5,000
5
5,001-10,000
1
10001+
1

Email recency for this list is measured worldwide rather than for Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 1,101 companies.

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 sustainable design consultants, 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 “sustainable design consultants”. 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 sustainable design consultants), 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 sustainable design consultants, 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, 5,833 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 22, 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.

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 sustainable design consultants, 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 sustainable design consultants are there based in Australia?

RevenueBase identified 1,101 sustainable design consultants 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?

URBIS, headquartered in Melbourne, tops this list with the largest team on record.

Which city has the most sustainable design consultants?

Sydney leads with 143 headquartered companies, followed by Melbourne (138) and Perth (70).

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 5,833 verified decision-maker contacts tracked across these 1,101 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 22, 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.