Company lists · Data refreshed September 2026

Top 24 General contractors based in Australia

Name: General contractors based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 15, 2026 1,134 companies tracked

RevenueBase identified 1,134 general contractors headquartered in Australia as of September 2026 and tracks 7,024 professional contacts across them, including 3,152 with verified work emails. Sydney is the largest hub.

This list covers general contractors 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 15, 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 15, 2026 86% judged on-target in blind review

1,134Companies

7,024Contacts tracked

3,152Verified emails

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The 24 largest general contractors based in Australia

Ranked by team size

Top 24 of 1,134 general contractors based in Australia, ranked by team size, largest first. Data refreshed Sep 15, 2026. RevenueBase Smart Search rates how each company's information relates to general contractors: 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	Mainbrace Constructions PTY LTD	Indirect evidence	St Leonards, AustraliaHQ checked Sep 15, 2026	201-500	252 contacts →
	Indirect evidence “At Mainbrace, we care about our clients, people, projects, community, and planet – and we strive to create value and impact in a way that is authentic, responsible, sustainable…” Source: RevenueBase Database · checked Sep 15, 2026
2	Decode Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	201-500	165 contacts →
	Indirect evidence “Decode’s origins go back to 2008 when it was first established.” Source: RevenueBase Database · checked Sep 15, 2026
3	CIP Constructions	Indirect evidence	Pyrmont, AustraliaHQ checked Sep 15, 2026	51-200	149 contacts →
	Indirect evidence “CIP Constructions combines experience with an innovative and progressive approach to deliver outstanding results for our clients.” Source: RevenueBase Database · checked Sep 15, 2026
4	Grindley	Indirect evidence	Pymble, AustraliaHQ checked Sep 15, 2026	51-200	104 contacts →
	Indirect evidence “Established in 1988 in Sydney Australia, we are a trusted commercial construction partner, passionate about delivery quality, innovative projects within the commercial, community…” Source: RevenueBase Database · checked Sep 15, 2026
5	Baseline	Partial evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	91 contacts →
	Partial evidence “Baseline is a head contractor specialising in government, education and commercial projects.” Source: RevenueBase Database · checked Sep 15, 2026
6	PMG Group	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	90 contacts →
	Indirect evidence “Three decades of integrated expertise has quietly set the benchmark.” Source: RevenueBase Database · checked Sep 15, 2026
7	Manteena Group	Indirect evidence	Fyshwick, AustraliaHQ checked Sep 15, 2026	51-200	85 contacts →
	Indirect evidence “Manteena is a multi-award-winning construction company specialising in complex projects of exceptional high quality.” Source: RevenueBase Database · checked Sep 15, 2026
8	Westbourne Constructions	Indirect evidence	Lindfield, AustraliaHQ checked Sep 15, 2026	51-200	68 contacts →
	Indirect evidence “Westbourne is a specialist residential builder of quality apartments.” Source: RevenueBase Database · checked Sep 15, 2026
9	Ascot Group	Indirect evidence	North Melbourne, AustraliaHQ checked Sep 15, 2026	51-200	66 contacts →
	Indirect evidence “Ascot Group is an Australian commercial building company.” Source: RevenueBase Database · checked Sep 15, 2026
10	Blueprint Homes	Indirect evidence	Perth, AustraliaHQ checked Sep 15, 2026	51-200	66 contacts →
	Indirect evidence “From small beginnings in 2005, the Blueprint Homes story is one of success after success.” Source: RevenueBase Database · checked Sep 15, 2026
11	Endacom PTY LTD	Indirect evidence	Lidcombe, AustraliaHQ checked Sep 15, 2026	201-500	65 contacts →
	Indirect evidence “Endacom Construction was formed in 2010 and has quickly established itself as a dynamic and client focused business in the contracting and construction industry.” Source: RevenueBase Database · checked Sep 15, 2026
12	SX Projects PTY LTD	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	51-200	65 contacts →
	Indirect evidence “SX Projects is a multi-award winning construction company specializing in high quality residential, commercial and community projects, ranging from aged-care facilities, luxury…” Source: RevenueBase Database · checked Sep 15, 2026
13	Mostyncopper	Indirect evidence	Sydney, AustraliaHQ checked Sep 15, 2026	11-50	62 contacts →
	Indirect evidence “About Us MostynCopper is a dynamic, highly-experienced team that specialises in complete project management services for the construction industry.” Source: RevenueBase Database · checked Sep 15, 2026
14	Ducon Building Solutions	Indirect evidence	Clayton South, AustraliaHQ checked Sep 15, 2026	51-200	59 contacts →
	Indirect evidence “Ducon – Making building easier Working and communicating with multiple stakeholders, resolving issues as they emerge, and meeting and exceeding client expectations.” Source: RevenueBase Database · checked Sep 15, 2026
15	Maben Group	Indirect evidence	North Melbourne, AustraliaHQ checked Sep 15, 2026	51-200	57 contacts →
	Indirect evidence “Maben Group specialises in providing Construction Management Services to a range of commercial projects for our clients.” Source: RevenueBase Database · checked Sep 15, 2026
16	Nicholson Construction	Indirect evidence	Wendouree, AustraliaHQ checked Sep 15, 2026	51-200	56 contacts →
	Indirect evidence “Nicholson Construction specialises in commercial construction, in particular health, education and government public facilities, as well as private projects such as retail outlets…” Source: RevenueBase Database · checked Sep 15, 2026
17	Westurban Group	Indirect evidence	Mount Waverley, AustraliaHQ checked Sep 15, 2026	11-50	56 contacts →
	Indirect evidence “WestUrban Group is a leading residential builder in Victoria, specialising in multi-unit, medium-density and high-end developments.” Source: RevenueBase Database · checked Sep 15, 2026
18	ICM Construction	Indirect evidence	South Brisbane, AustraliaHQ checked Sep 15, 2026	11-50	53 contacts →
	Indirect evidence “ICM Construction is a National building and project management company.” Source: RevenueBase Database · checked Sep 15, 2026
19	Bowdencorp	Indirect evidence	Richmond, AustraliaHQ checked Sep 15, 2026	51-200	51 contacts →
	Indirect evidence “25 YEARS OF CONSTRUCTION BY COLLABORATION BowdenCorp is a dynamic construction management partner - continuously evolving, learning, and improving.” Source: RevenueBase Database · checked Sep 15, 2026
20	Emco Building	Indirect evidence	Osborne Park, AustraliaHQ checked Sep 15, 2026	11-50	51 contacts →
	Indirect evidence “EMCO Building is a WA owned and operated specialist commercial and industrial building company delivering excellence in construction since 1986.” Source: RevenueBase Database · checked Sep 15, 2026
21	Project ONE Group	Indirect evidence	Pyrmont, AustraliaHQ checked Sep 15, 2026	11-50	45 contacts →
	Indirect evidence “Project One is a Construction Management firm, based in Australia, specialising in the delivery of fast-track interior fit out & refurbishment projects using head contract…” Source: RevenueBase Database · checked Sep 15, 2026
22	Belmadar	Indirect evidence	Naremburn, AustraliaHQ checked Sep 15, 2026	51-200	45 contacts →
	Indirect evidence “Belmadar is a Sydney-based privately-owned construction company delivering excellence in commercial construction.” Source: RevenueBase Database · checked Sep 15, 2026
23	Alliance Project Group	Indirect evidence	Sydney Olympic Park, AustraliaHQ checked Sep 15, 2026	51-200	44 contacts →
	Indirect evidence “As a dynamic client focused organisation, Alliance Project Group is dedicated to delivering a comprehensive range of construction and project management services, to deliver…” Source: RevenueBase Database · checked Sep 15, 2026
24	Condev Construction	Indirect evidence	Fortitude Valley, AustraliaHQ checked Sep 15, 2026	51-200	41 contacts →
	Indirect evidence “Condev was formed in 2002 with the objective of establishing a sustainable and continually improving construction company which was able to provide predictable and quality…” Source: RevenueBase Database · checked Sep 15, 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: general contractors. 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 general contractors.
Partial evidence: Its own public description names part of general contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name general contractors. 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 24 of 1,134 general contractors based in Australia

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General contractors based in Australia at a glance

As of Sep 15, 2026

44.9%Verified-email coverage

6.2Average contacts per company

1-10Median size (employees)

10.2%Largest-city concentration · Sydney

Sep 15, 2026Page data refreshed

Companies by employee count

1-10

710

11-50

344

51-200

201-500

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 1,134 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 general contractors, 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 “general contractors”. 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 general contractors), 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 general contractors, 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, 3,152 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 15, 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.

General contractors by metro

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 general contractors, 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 general contractors are there based in Australia?

RevenueBase identified 1,134 general contractors 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?

Mainbrace Constructions PTY LTD, headquartered in St Leonards, tops this list with the largest team on record.

Which city has the most general contractors?

Sydney leads with 116 headquartered companies, followed by Melbourne (71) and Brisbane (49).

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 3,152 verified decision-maker contacts tracked across these 1,134 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 15, 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.