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Top 27 Construction companies in Western Australia

Tamtam tracks 27 Construction companies headquartered in Western Australia. This list ranks all of them by number of employees on LinkedIn, led by Monadelphous, SRG Global and Clough. Their median headcount is 357. Half of them were founded in 1982 or later. The most common headquarters are Perth (10) and Osborne Park (3).

馃嚘馃嚭 Western Australia27 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Monadelphousmonadelphous.com.au

An ASX-200 engineering group in Australia, providing construction, maintenance, and industrial services to the resources, energy, and infrastructure sectors

Construction 馃嚘馃嚭 Perth 5,712 1972
2
SRG Globalsrgglobal.com.au

A diversified industrial services provider offering asset maintenance, mining services, engineering, and construction solutions to solve complex problems in major industries

Construction 馃嚘馃嚭 Perth 2,514 1961
3
Cloughcloughgroup.com

A pioneering project delivery organization that delivers high performing assets for energy, resources, and infrastructure industries with a focus on innovation and sustainability

Construction 馃嚘馃嚭 Perth 1,855 1919
4
KAEFER Australiakaefer.com.au

A leading provider of construction, maintenance, and industrial services in Australia with a focus on mechanical, surface protection, insulation, and electrical services

Construction 馃嚘馃嚭 Perth 1,371 1918
5
GenusPlus Groupgenus.com.au

Designs, constructs, maintains critical power and communications infrastructure across Australia, including transmission, substations, renewables, and communication solutions, supporting national development and progress.

Construction 馃嚘馃嚭 Belmont 1,276 2018
6
AusGroup - AGC | MASaltrad.com.au

An experienced project and asset services provider offering fabrication, construction, maintenance, scaffolding, industrial coatings, and specialty services to various industries

Construction 馃嚘馃嚭 Subiaco 1,202 n/a
7
Robert Bird Grouprobertbird.com

Provides structural, civil, and construction engineering consultancy services, creating value for clients through innovative application of engineering science and planning for construction.

Construction 馃嚘馃嚭 Brisbane 912 1982
8
Duratecduratec.com.au

Specializing in steel and concrete protection and remediation, offering cost-effective solutions to extend asset life through innovative programs and methodologies

Construction 馃嚘馃嚭 Wangara 873 n/a
9
ECMecm.com.au

A Western Australia-based company part of GenusPlus Group, offering E&I, fabrication, maintenance, and services to mining, oil and gas, infrastructure, and power generation sectors

Construction 馃嚘馃嚭 Henderson 798 1986
10
Five Group Pty Ltdthefivegroup.com.au

A group of engineering, surveying, and architectural drafting companies operating in Australia and South East Asia with subsidiaries in various specialized areas

Construction 馃嚘馃嚭 Balcatta 642 n/a
11
Ertechertech.com.au

Australian employee-owned company building and renewing infrastructure in urban, regional, and remote Australia. Expertise in Defence, Resources, Transport, and Infrastructure sectors.

Construction 馃嚘馃嚭 Wangara 546 1981
12
SCEE Electricalsceeelectrical.com.au

A national provider of electrical services to resources and infrastructure sectors, offering maintenance, instrumentation, communication, and smart energy solutions with proven expertise

Construction 馃嚘馃嚭 Perth 544 1978
13
DECMILdecmil.com

The company offers integrated construction and engineering solutions in key market sectors, operating in Australia with offices in Perth, Brisbane, and Melbourne

Construction 馃嚘馃嚭 Perth 467 1978
14
FIRM Construction Pty Ltd.firmconstruction.com.au

Leading commercial construction and refurbishment contractor in Western Australia, delivering client-oriented projects that transform the community's cultural landscape

Construction 馃嚘馃嚭 Subiaco 357 2003
15
JWH Groupjwhgroup.com.au

A leading residential building group in Western Australia, offering a range of homes from affordable to luxury for various lifestyles and locations

Construction 馃嚘馃嚭 Osborne Park 335 1983
16
Summit Homes Groupsummithomes.com.au

Leading Western Australian construction, property, and finance business offering tailored home building journeys with a focus on people and over 40 years of experience

Construction 馃嚘馃嚭 Myaree 319 1978
17
Scho Homes (SchoHomes)

Perth home builders ensuring attention to detail, care, and professionalism to deliver flawless dream homes with a focus on client needs and feedback

Construction 馃嚘馃嚭 Balcatta 317 2007
18
UGL Kentz Joint Ventureuglkentz.com.au

Provider of structural, mechanical, and piping construction services for LNG facilities, offering job opportunities and expertise for pre-commissioning and commissioning

Construction 馃嚘馃嚭 Perth 223 2014
19
PARC Engineering Pty Ltdparcengineering.com.au

Provides comprehensive engineering and project management solutions to clients in Australian resources, energy, and infrastructure sectors, including civil, mechanical, electrical, and inspection services.

Construction 馃嚘馃嚭 Applecross 188 2018
20
LD Totalldtotal.com.au

Industry-leading and award-winning landscaping company offering end-to-end services to commercial clients across Australia, with a focus on quality, reliability, and lasting partnerships

Construction 馃嚘馃嚭 Burswood 183 1991
21
Scott Park Group Pty Ltdscottparkgroup.com.au

Residential building industry leader in Western Australia, known for commitment to customer service and quality homes Brands include Redink Homes and B1 Homes

Construction 馃嚘馃嚭 Osborne Park 183 2006
22
DTMT Construction - Australiadtmt.com.au

A family-owned construction business established in 1982, specializing in civil works across Australia, particularly in remote areas They offer integrated services and prioritize safety

Construction 馃嚘馃嚭 Perth 181 1982
23
Alltype Engineeringalltypeengineering.com.au

A company providing fabrication, installation, construction, and maintenance services for various industries, with expertise in high pressure pipework, structural steel, and modular equipment

Construction 馃嚘馃嚭 Naval Base 168 1985
24
Catalpa Groupcatalpagroup.com.au

A leading civil, concrete, and groundworks company in Australia specializing in construction, energy, pipelines, and communications projects with a focus on quality and safety

Construction 馃嚘馃嚭 Osborne Park 162 2009
25
Kerman Contracting Pty Ltdkerman.com.au

Established in 1981, this company specializes in design and construction of industrial facilities, processing plants, accommodation villages, and bulk storage facilities in Australia

Construction 馃嚘馃嚭 Applecross 151 1981
26
Stork Technical Services Australia Pty Ltdenermech.com

A leading contractor in Australia providing a wide range of services for the mining, hydrocarbon, power, and industrial sectors, tailored to customer needs

Construction 馃嚘馃嚭 Perth 146 1954
27
Wood & Grieve Engineers now part of Stanteclinkedin.com

This company's page is no longer active Visit their new page on Stantec to learn more about their services

Construction 馃嚘馃嚭 Perth 86 n/a

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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The same list elsewhere in Australia