Company lists · Data refreshed September 2026

Top 25 Engineering consultancy companies based in Sydney, Australia

Name: Engineering consultancy companies based in Sydney, Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 441 companies tracked

RevenueBase identified 441 engineering consultancy companies headquartered in Sydney, Australia as of September 2026 and tracks 29,154 professional contacts across them, including 12,389 with verified work emails. Sydney is the largest hub.

This list covers engineering consultancy companies 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 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

441Companies

29,154Contacts tracked

12,389Verified emails

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The 25 largest engineering consultancy companies based in Sydney, Australia

Ranked by team size

Top 25 of 441 engineering consultancy companies based in Sydney, Australia, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to engineering consultancy companies: 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	GHD	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	10001+	14,572 contacts →
	Indirect evidence “We are committed to addressing the world’s biggest challenges in the areas of water, energy and communities.” Source: RevenueBase Database · checked Sep 24, 2026
2	WSP In Australia	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	10001+	3,132 contacts →
	Partial evidence “We are one of the world’s leading professional services firms, uniting our engineering, advisory and science-based expertise to shape communities to advance humanity.” Source: RevenueBase Database · checked Sep 24, 2026
3	Kpmg SGA	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	561 contacts →
	Partial evidence “Our chartered building surveying and environmental consultancy focuses on delivering high quality technical and commercial value to clients.” Source: RevenueBase Database · checked Sep 24, 2026
4	WT Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	201-500	544 contacts →
	Indirect evidence “At WT, we empower our clients to grow, inspiring confidence through independent advice and inventive thinking to create sustainable value across all aspects of the built…” Source: RevenueBase Database · checked Sep 24, 2026
5	Northrop Consulting Engineers	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	501-1,000	522 contacts →
	Partial evidence “We partner with builders, architects, project managers and developers to deliver pragmatic engineering solutions for the land and built environment.” Source: RevenueBase Database · checked Sep 24, 2026
6	Acor Consultants	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	501-1,000	423 contacts →
	Partial evidence “Founded in 1997, ACOR Consultants began as a group of engineers with a unique set of personal and professional values providing specialist consulting services.” Source: RevenueBase Database · checked Sep 24, 2026
7	Woolpert Asia-Pacific	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	1,001-5,000	291 contacts →
	Indirect evidence “Woolpert Asia-Pacific embodies all that is Woolpert, with an added focus on this region of the world.” Source: RevenueBase Database · checked Sep 24, 2026
8	RP Infrastructure	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	201-500	280 contacts →
	Indirect evidence “When you need a trusted delivery partner, we're by your side.” Source: RevenueBase Database · checked Sep 24, 2026
9	Jbs&g	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	201-500	262 contacts →
	Partial 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 24, 2026
10	ECO Logical Australia PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	201-500	211 contacts →
	Indirect evidence “We exist to empower people to make a difference.” Source: RevenueBase Database · checked Sep 24, 2026
11	Connellgriffin	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	184 contacts →
	Indirect evidence “ConnellGriffin is a commercial advisory firm operating within the infrastructure industry.” Source: RevenueBase Database · checked Sep 24, 2026
12	MBB Group	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	167 contacts →
	Partial evidence “MBB Group is an independent consultancy firm, specialising in finding and developing innovative, effective solutions to complex infrastructure projects and programs.” Source: RevenueBase Database · checked Sep 24, 2026
13	SJA	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	145 contacts →
	Partial evidence “SJA Construction Services is a specialist consultancy firm providing independent expert, advisory and technical services to the construction and infrastructure industry across…” Source: RevenueBase Database · checked Sep 24, 2026
14	Rocktown PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	201-500	97 contacts →
	Partial evidence “Rocktown are a leading player in the civil engineering industry throughout Australia, specialising in reinforced concrete structures.” Source: RevenueBase Database · checked Sep 24, 2026
15	Aston Consulting	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	95 contacts →
	Indirect evidence “We engineer environments that enhance the human experience.” Source: RevenueBase Database · checked Sep 24, 2026
16	E-Lab Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	84 contacts →
	Partial evidence “Where Engineering & Science Inspire Design.” Source: RevenueBase Database · checked Sep 24, 2026
17	Turnbull Engineering	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	73 contacts →
	Partial evidence “Turnbull is a select team of highly motivated engineering professionals specialising in the design of civil infrastructure, including transport, energy and water and mining assets.” Source: RevenueBase Database · checked Sep 24, 2026
18	Chalouhi	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	67 contacts →
	Partial evidence “Chalouhi is a leading civil engineering and construction company with extensive experience in the industry.” Source: RevenueBase Database · checked Sep 24, 2026
19	Burton Contractors PTY LTD	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	65 contacts →
	Partial evidence “Burton Contractors is a multi-disciplined Civil Engineering Contractor approaching 200 employees and a fleet of more than 100 pieces of plant.” Source: RevenueBase Database · checked Sep 24, 2026
20	CGC Recruitment	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	11-50	64 contacts →
	Indirect evidence “CGC Recruitment is an Australian owned and operated Recruitment Company.” Source: RevenueBase Database · checked Sep 24, 2026
21	Triaxial Consulting	Partial evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	57 contacts →
	Partial evidence “Established in 2012, Triaxial Consulting are a firm of Consulting Civil and Structural Engineers, who provide a suite of specialist consulting engineering services, to all…” Source: RevenueBase Database · checked Sep 24, 2026
22	Samsung C&t Corporation Australia	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	n/a	57 contacts →
	Indirect evidence “Over the past half-century, Samsung C&T’s E&C Group has worked diligently to deliver the best value-added services to our clients by utilizing our top-tier talent and technical…” Source: RevenueBase Database · checked Sep 24, 2026
23	Barker Ryan Stewart	Indirect evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	56 contacts →
	Indirect evidence “At Barker Ryan Stewart, we believe in better.” Source: RevenueBase Database · checked Sep 24, 2026
24	ARCH	Strong evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	53 contacts →
	Strong 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 24, 2026
25	SCP Consulting PTY LTD	Strong evidence	Sydney, AustraliaHQ checked Sep 24, 2026	51-200	52 contacts →
	Strong evidence “SCP Consulting is a national engineering consultancy with over 40 years of experience delivering innovative, practical design and management solutions across 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: engineering consultancy companies. 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 engineering consultancy companies.
Partial evidence: Its own public description names part of engineering consultancy companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name engineering consultancy companies. 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 441 engineering consultancy companies based in Sydney, Australia

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Engineering consultancy companies based in Sydney, Australia at a glance

As of Sep 24, 2026

42.5%Verified-email coverage

66.1Average contacts per company

1-10Median size (employees)

100.0%Largest-city concentration · Sydney

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

275

11-50

111

51-200

201-500

501-1,000

1,001-5,000

10001+

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 441 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 engineering consultancy companies, 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 “engineering consultancy companies”. 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 engineering consultancy companies), 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 engineering consultancy companies, 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, 12,389 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.

Engineering consultancy companies by metro in Australia

Engineering consultancy companies in Sydney441
Engineering consultancy companies in Melbourne364
Engineering consultancy companies in Brisbane283
Engineering consultancy companies in Perth279
Engineering consultancy companies in Adelaide111
Engineering consultancy companies in Gold Coast47
Engineering consultancy companies in Brisbane City43
Engineering consultancy companies in Newcastle40
Engineering consultancy companies in North Sydney34
Engineering consultancy companies in West Perth28
Engineering consultancy companies in Parramatta27

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 engineering consultancy companies, 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 engineering consultancy companies are there based in Sydney, Australia?

RevenueBase identified 441 engineering consultancy companies 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?

GHD, headquartered in Sydney, tops this list with the largest team on record.

Which city has the most engineering consultancy companies?

Sydney leads with 441 headquartered companies, followed by Melbourne (364) and Brisbane (283).

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 12,389 verified decision-maker contacts tracked across these 441 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.