Company lists · Data refreshed September 2026

Top 25 Consultancy services based in Adelaide, Australia

Name: Consultancy services based in Adelaide, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 379 companies tracked

RevenueBase identified 379 consultancy services headquartered in Adelaide, Australia as of September 2026 and tracks 1,538 professional contacts across them, including 749 with verified work emails. Sydney is the largest hub.

This list covers consultancy services headquartered in Adelaide, 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 24, 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 24, 2026 86% judged on-target in blind review

379Companies

1,538Contacts tracked

749Verified emails

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The 25 largest consultancy services based in Adelaide, Australia

Ranked by team size

Top 25 of 379 consultancy services based in Adelaide, Australia, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to consultancy 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	Tonkin	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	201-500	237 contacts →
	Strong evidence “Tonkin is a leading provider of engineering, environmental and consultancy services to private and public organisations.” Source: RevenueBase Database · checked Sep 24, 2026
2	BCA Engineers	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	51-200	50 contacts →
	Strong evidence “BCA Engineers is a professional services consultancy specialising in Building Services and Fire Safety Engineering including the implementation of new technology.” Source: RevenueBase Database · checked Sep 24, 2026
3	JY Australia	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	51-200	44 contacts →
	Strong evidence “JY Australia is an Indigenous and Veteran owned Professional Services and Management Consultancy Company that provides solutions and services to Government, Defence and Industry.” Source: RevenueBase Database · checked Sep 24, 2026
4	Holman Hodge	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	38 contacts →
	Indirect evidence “Holman Hodge is a leading Adelaide-based professional service firm providing a wide range of accounting, business and advisory services designed to help our clients maximise their…” Source: RevenueBase Database · checked Sep 24, 2026
5	Para Bellum Solutions	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	27 contacts →
	Indirect evidence “SI VIS PACEM, PARA BELLUM – IF YOU WANT PEACE, PREPARE FOR WAR" Para Bellum Solutions provides diverse consulting services to Defence and broader Government and Industry with a…” Source: RevenueBase Database · checked Sep 24, 2026
6	Future Urban	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	25 contacts →
	Strong evidence “Future Urban is a boutique planning and development consultancy specialising in the delivery of urban planning and development services to developers, property owners, local and…” Source: RevenueBase Database · checked Sep 24, 2026
7	Hender Consulting	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	23 contacts →
	Indirect evidence “Hender Consulting is a specialist management consulting practice which provides a range of services within the human resources field.” Source: RevenueBase Database · checked Sep 24, 2026
8	Hannan & Partners PTY LTD	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	20 contacts →
	Indirect evidence “Hannan and Partners works with organisations to strategically plan, transform business and educate people to unlock opportunities for growth and profits, focus effort and realise…” Source: RevenueBase Database · checked Sep 24, 2026
9	Akto PTY LTD	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	19 contacts →
	Indirect evidence “akto helps business and technology leaders create value through meaningful connections that drive strategy, innovation, and impact.” Source: RevenueBase Database · checked Sep 24, 2026
10	Purple Giraffe	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	19 contacts →
	Strong evidence “Purple Giraffe is a Marketing Consultancy in Adelaide, Fremantle and Brisbane.” Source: RevenueBase Database · checked Sep 24, 2026
11	Opsys Australia	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	19 contacts →
	Strong evidence “OpSys was founded with the purpose of providing strategy, consultancy and advise about IT requirements and assistance in moving, at your own pace, into the cloud.” Source: RevenueBase Database · checked Sep 24, 2026
12	The BIG Easy Group	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	19 contacts →
	Indirect evidence “With over 15 years of experience in the hospitality industry, The Big Easy Group is dedicated to transforming great venues into great businesses.” Source: RevenueBase Database · checked Sep 24, 2026
13	Synergyiq	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	17 contacts →
	Strong evidence “Leaders in Enabling Change Starting in 2013, Synergy IQ is a consultancy firm that helps leaders create world-class businesses where people feel safe, valued, inspired and…” Source: RevenueBase Database · checked Sep 24, 2026
14	P & A Accountants And Business Advisers	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	16 contacts →
	Indirect evidence “P&A Accountants and Business Advisers provide a whole range of services to individuals, small businesses, companies and large businesses.” Source: RevenueBase Database · checked Sep 24, 2026
15	Technoweld	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	15 contacts →
	Strong evidence “Technoweld is a materials welding and inspection consultancy service company; with a range of services including Welding Inspection, Welding Procedures, Consultancy and…” Source: RevenueBase Database · checked Sep 24, 2026
16	Ekistics Planning And Design	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	14 contacts →
	Indirect evidence “Established in March 2014, Ekistics is a professional services firm of experienced and well respected planning specialists who are based in South Australia with strong local…” Source: RevenueBase Database · checked Sep 24, 2026
17	Redrawn	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	14 contacts →
	Strong evidence “Redrawn is a multi-discipline engineering consultancy delivering heavy industrial design across process, mechanical, piping, structural, civil, electrical, instrumentation, and…” Source: RevenueBase Database · checked Sep 24, 2026
18	Bayer PTY LTD	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	12 contacts →
	Indirect evidence “We are a team of passionate individuals helping your organisations to develop and improve capabilities, which in turn allows you to remain competitive, highly agile and relevant…” Source: RevenueBase Database · checked Sep 24, 2026
19	Elevate Management Consulting	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	11-50	11 contacts →
	Indirect evidence “If you want people who know what they are doing and who truly care, then Elevate Management Consulting is for you.” Source: RevenueBase Database · checked Sep 24, 2026
20	Environmental Projects	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	11 contacts →
	Strong evidence “Over 20 years in business has embedded us as a small, specialised, consultancy providing bespoke advice to clients across South Australia, as well as interstate.” Source: RevenueBase Database · checked Sep 24, 2026
21	BRM Advisory	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	10 contacts →
	Indirect evidence “We are a South Australian management consulting business working with our clients to develop and implement solutions to their strategic, operational and financial challenges.” Source: RevenueBase Database · checked Sep 24, 2026
22	Chris Schmidt Consulting CSC	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	10 contacts →
	Indirect evidence “Chris Schmidt Consulting is engineering the future, today.” Source: RevenueBase Database · checked Sep 24, 2026
23	Open Systems Technology OST	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	51-200	10 contacts →
	Strong evidence “Established in 1992 OST® is a specialist consulting organisation providing business solutions, management consultancy, and technologies for retail and government sectors.” Source: RevenueBase Database · checked Sep 24, 2026
24	CGK	Indirect evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	10 contacts →
	Indirect evidence “Experts in Business for Business Offering specialist advice and solutions you can trust.” Source: RevenueBase Database · checked Sep 24, 2026
25	Southfront	Strong evidence	Adelaide, AustraliaHQ checked Sep 24, 2026	1-10	9 contacts →
	Strong evidence “Southfront is a specialist consultancy focusing on the application of best practice and local knowledge in the field of stormwater management across South Australia.” Source: RevenueBase Database · checked Sep 24, 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: consultancy 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 consultancy services.
Partial evidence: Its own public description names part of consultancy services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name consultancy 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 379 consultancy services based in Adelaide, Australia

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Consultancy services based in Adelaide, Australia at a glance

As of Sep 24, 2026

48.7%Verified-email coverage

4.1Average contacts per company

1-10Median size (employees)

527.4%Largest-city concentration · Sydney

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

325

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole Australia list rather than for Adelaide, so it is reported there. Company counts and contact totals on this page are exact for Adelaide, over 379 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 consultancy 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 Adelaide, Australia whose own description of what they do matches “consultancy 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 consultancy 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 consultancy services, and records with no verified work email. Companies headquartered outside Adelaide 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, 749 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 24, 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.

Consultancy services by metro in Australia

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 consultancy 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 consultancy services are there based in Adelaide, Australia?

RevenueBase identified 379 consultancy services headquartered in Adelaide, 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?

Tonkin, headquartered in Adelaide, tops this list with the largest team on record.

Which city has the most consultancy services?

Sydney leads with 1999 headquartered companies, followed by Melbourne (1676) and Brisbane (903).

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 749 verified decision-maker contacts tracked across these 379 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 24, 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.