Company lists · Data refreshed September 2026

Top 25 Sustainability consulting services based in Sydney, Australia

Name: Sustainability consulting services based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 154 companies tracked

RevenueBase identified 154 sustainability consulting services headquartered in Sydney, Australia as of September 2026 and tracks 1,192 professional contacts across them, including 676 with verified work emails. Sydney is the largest hub.

This list covers sustainability consulting services headquartered in Sydney, 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

154Companies

1,192Contacts tracked

676Verified emails

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The 25 largest sustainability consulting services based in Sydney, Australia

Ranked by team size

Top 25 of 154 sustainability consulting services based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to sustainability consulting services: 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	Jbs&g	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	201-500	262 contacts →
	Indirect 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 22, 2026
2	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 22, 2026
3	Edge Impact	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	84 contacts →
	Indirect evidence “Edge Impact exists to create a world where unsustainable is unthinkable.” Source: RevenueBase Database · checked Sep 22, 2026
4	ARCH	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	53 contacts →
	Indirect evidence “Founded in 2014 by John Armstrong, ARCH Artifex (ARCH) is a specialist consultancy dedicated to delivering measurable, outcome-focused solutions in Systems Engineering & Safety…” Source: RevenueBase Database · checked Sep 22, 2026
5	BWD Strategic	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	45 contacts →
	Partial evidence “BWD is a pure-play, independent sustainability consultancy and B Corp with offices in Sydney, New York, Brisbane, Phoenix, and Auckland.” Source: RevenueBase Database · checked Sep 22, 2026
6	Athena Blue Global	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	26 contacts →
	Indirect evidence “Athena Blue Global helps shape a better future for forward-thinking businesses worldwide.” Source: RevenueBase Database · checked Sep 22, 2026
7	We ARE Unity	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	24 contacts →
	Indirect evidence “Welcome to We Are Unity!” Source: RevenueBase Database · checked Sep 22, 2026
8	Nettzero	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	20 contacts →
	Partial evidence “NettZero is a 100% Australian owned and operated Sustainability Consultancy which caters to a multitude of sustainability demands concerning on Businesses.” Source: RevenueBase Database · checked Sep 22, 2026
9	Energylink Services PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	18 contacts →
	Indirect evidence “EnergyLink Services is a multi-disciplinary, specialist, energy and carbon consultancy and project developer.” Source: RevenueBase Database · checked Sep 22, 2026
10	Centric Building Services Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	14 contacts →
	Partial evidence “Centric Building Services Engineers Centric Building Services Engineers are a team of highly experienced consulting engineering experts in building services.” Source: RevenueBase Database · checked Sep 22, 2026
11	100 Renewables	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	12 contacts →
	Indirect evidence “100% Renewables is a national consultancy specialising in the development of Climate Action Strategies for business, including pathways to net zero emissions.” Source: RevenueBase Database · checked Sep 22, 2026
12	Sphere Infrastructure Partners	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence “Sphere was founded in 2018 in recognition of the need for advisors with specific environmental sector experience, development capability and expertise in delivering complex…” Source: RevenueBase Database · checked Sep 22, 2026
13	Pure Environment	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	6 contacts →
	Partial evidence “We are a dedicated consultancy driven by a profound commitment to fostering sustainability across diverse sectors, including construction, commercial, industrial, and financial…” Source: RevenueBase Database · checked Sep 22, 2026
14	Pickled JAM Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	6 contacts →
	Partial evidence “Pickled Jam Consulting is a specialist ESG Business Development & Sales consultancy.” Source: RevenueBase Database · checked Sep 22, 2026
15	Flexigen PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Flexigen delivers innovative engineering solutions across industrial and manufacturing sectors, specialising in energy efficiency, renewable energy, and process optimisation.” Source: RevenueBase Database · checked Sep 22, 2026
16	Ff&3 PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Using proprietary technology, we efficiently catalogue client’s assets and develop strategies for reuse, repurpose or recycling to reduce costs, reduce carbon emissions and…” Source: RevenueBase Database · checked Sep 22, 2026
17	ESG Plus	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Partial evidence “At ESG PLUS we are here to help you with your ESG strategy and sustainability compliance needs.” Source: RevenueBase Database · checked Sep 22, 2026
18	70 Ways	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “70 Ways is at the forefront of ushering businesses into a sustainable future, recognizing the complex challenges posed by the evolving landscape of energy, environment, and safety.” Source: RevenueBase Database · checked Sep 22, 2026
19	Infrafuture	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “We are a specialist in the energy and water sectors across major projects and business operations.” Source: RevenueBase Database · checked Sep 22, 2026
20	Unitive	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence “Helping build responsible businesses and leaders for a more sustainable, productive and meaningful economy.” Source: RevenueBase Database · checked Sep 22, 2026
21	Capital & Centric Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	11-50	4 contacts →
	Partial evidence “We have always done things a little differently at Capital & Centric Consulting.” Source: RevenueBase Database · checked Sep 22, 2026
22	Team Catalyst	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “We help buildings reduce greenhouse emissions by improving energy efficiency and occupant comfort!” Source: RevenueBase Database · checked Sep 22, 2026
23	Cress Consulting PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	51-200	4 contacts →
	Partial evidence “Cress Consulting is committed to finding the right solutions to help you achieve a more sustainable, secure future.” Source: RevenueBase Database · checked Sep 22, 2026
24	Brownee	Indirect evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Indirect evidence “Want to take your small business to the next level?” Source: RevenueBase Database · checked Sep 22, 2026
25	ESG Strategy	Partial evidence	Sydney, AustraliaHQ checked Sep 22, 2026	1-10	4 contacts →
	Partial evidence “At ESG Strategy, we help Australian mid-market organisations turn ESG and sustainability compliance into competitive advantage.” Source: RevenueBase Database · checked Sep 22, 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: sustainability consulting services. 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 sustainability consulting services.
Partial evidence: Its own public description names part of sustainability consulting services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainability consulting services. 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 154 sustainability consulting services based in Sydney, Australia

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Sustainability consulting services based in Sydney, Australia at a glance

As of Sep 22, 2026

56.7%Verified-email coverage

7.7Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

122

11-50

51-200

201-500

Email recency for this list is measured across the whole Australia list rather than for Sydney, so it is reported there. Company counts and contact totals on this page are exact for Sydney, over 154 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 sustainability consulting services, 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 Sydney, Australia whose own description of what they do matches “sustainability consulting services”. 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 sustainability consulting services), 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 sustainability consulting services, and records with no verified work email. Companies headquartered outside Sydney 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, 676 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.

Sustainability consulting services by metro in Australia

Sustainability consulting services in Sydney154
Sustainability consulting services in Melbourne131
Sustainability consulting services in Perth80
Sustainability consulting services in Brisbane75
Sustainability consulting services in Adelaide37

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 sustainability consulting services, 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 sustainability consulting services are there based in Sydney, Australia?

RevenueBase identified 154 sustainability consulting services headquartered in Sydney, 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?

Jbs&g, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most sustainability consulting services?

Sydney leads with 154 headquartered companies, followed by Melbourne (131) and Perth (80).

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 676 verified decision-maker contacts tracked across these 154 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.