Top 30 Construction Companies in Australia – Biggest Builders & Building Contractors

Australia’s construction sector remains a cornerstone of the national economy, with total work reaching AUD 334 billion in 2024-25, underpinned by robust residential, commercial and infrastructure pipelines. Despite persistent cost pressures national building cost escalation is forecast at 5.3% in 2025—and skills shortages ahead of the 2032 Brisbane Olympics, tier 1 construction companies continue to expand project scopes and innovate through modular techniques and digital delivery methods.

In May 2025, total dwellings approved rose 3.2% to 15,212, with the value of residential building climbing 3.6% to AUD 9.28 billion, while non-residential work dipped by 22.4% highlighting the resilience of Australia’s housing market amid broader market fluctuations. In this landscape of growth and challenge, the biggest construction companies in Australia, or largest builders in Australia, are essential partners for developers, governments and homeowners alike. Below, we profile the top builders & building contractors their histories, specialties and recent marquee projects to help you identify the right collaborator for your next venture.

Top 30 Construction Companies in Australia

1. CIMIC Group
   CIMIC Group (formerly Leighton Holdings) tops the list with 2025 revenues of AUD 3.77 billion, driven by major infrastructure and mining-services projects.

   • Founded: 1899

   • Work Types: Infrastructure, resources, property development

   • Regions: Nationwide, Asia, Americas

   • Specialties: PPPs, heavy civil, mining infrastructure

   • Recent Projects: Melbourne Metro Tunnel; Adelaide Desalination Plant; WestConnex Stage 2.

2. Lendlease Group
   A global leader in integrated delivery, Lendlease reported AUD 628 million in non-residential building revenue in 2024–25.

   • Founded: 1958

   • Work Types: Commercial, residential, infrastructure, defence

   • Regions: Nationwide & internationally

   • Specialties: Urban regeneration, PPPs, mixed-use precincts

   • Recent Projects: Barangaroo South; Victoria Harbour; Western Sydney Airport precinct

3. Multiplex
   Renowned for high-rise towers and cultural venues, Multiplex delivers over AUD 1 billion in projects annually.

   • Founded: 1962

   • Work Types: Residential apartments, commercial precincts, cultural institutions

   • Regions: NSW, VIC, QLD, WA

   • Specialties: Mixed-use developments, podium complexes, iconic landmarks

   • Recent Projects: Crown Sydney Hotel Resort; The One Sydney Harbour; Sydney Fish Market redevelopment

4. CPB Contractors
   As CIMIC’s construction arm, CPB handles Australia’s largest civil and rail builds, underpinning IBISWorld’s infrastructure rankings.

   • Founded: 2013 (heritage to 1949)

   • Work Types: Infrastructure, resources, urban development

   • Regions: Nationwide, Asia, Pacific

   • Specialties: Rail, road, water, PPPs

   • Recent Projects: WestConnex M4–M5 Link; Darwin City Waterfront; Inland Rail upgrades

5. John Holland
   A top rail and transport contractor in IBISWorld’s transport infrastructure category.

   • Founded: 1949

   • Work Types: Transport, civil engineering, social infrastructure

   • Regions: Australia & NZ

   • Specialties: Tunnelling, rail systems, motorways

   • Recent Projects: Melbourne Metro Tunnel; Sydney Metro City & Southwest; Inland Rail

6. Hutchinson Builders
   Australia’s oldest private builder, Hutchies features among the top four in commercial and industrial works.

   • Founded: 1912

   • Work Types: Commercial, residential, industrial, infrastructure

   • Regions: Nationwide (HQ Brisbane)

   • Specialties: Fit-out, health & aged care, mixed-use precincts

   • Recent Projects: Mondrian Hotel Gold Coast; The Green retirement village; Brunswick & Co build-to-rent

7. Fulton Hogan
   Leading roadworks and materials supply, Fulton Hogan is pivotal in IBISWorld’s civil infrastructure segment.

   • Founded: 1933

   • Work Types: Roads, civil works, utilities, materials

   • Regions: NSW, VIC, QLD, SA, WA

   • Specialties: Road maintenance, partnering models, sustainability

   • Recent Projects: WestConnex maintenance; water program partnerships; airport runway upgrades

8. ADCO Constructions
   Specialising in healthcare and education, ADCO ranks high for repeat government work.

   • Founded: 1970

   • Work Types: Healthcare, education, residential, commercial

   • Regions: NSW, VIC, QLD

   • Specialties: Design-and-construct, refurbishment, build-to-rent

   • Recent Projects: Griffith Regional Hospital; Cordelia build-to-rent; Basketball Centre upgrade

9. Seymour Whyte
   Experts in civil and urban infrastructure, featured in IBISWorld’s water & transport reports.

   • Founded: 1990

   • Work Types: Roads, rail, water, resources

   • Regions: QLD, NSW, WA, NT

   • Specialties: Bridge construction, motorway upgrades, light rail

   • Recent Projects: WestConnex; Gold Coast Light Rail; NorthLink WA

10. Richard Crookes Constructions
    A family-owned social infrastructure specialist, noted for schools and arts precincts.

    • Founded: 1976

    • Work Types: Education, health, cultural, office fit-out

    • Regions: NSW, ACT

    • Specialties: Refurbishment, community projects, adaptive reuse

    • Recent Projects: Western Sydney Airport Metro Station; Walsh Bay Arts Precinct; UTS Central

11. Mirvac
    With integrated development & construction, Mirvac drives major residential and commercial towers.

    • Founded: 1972

    • Work Types: Residential, commercial, retail, industrial

    • Regions: NSW, VIC, QLD, WA

    • Specialties: Mixed-use precincts, sustainability, master-planning

    • Recent Projects: Quay Quarter Sydney; The Ribbon Melbourne; Steel Blue Oval apartments

12. Laing O’Rourke
    International engineering giant known for prefabrication and digital construction.

    • Founded: 1978

    • Work Types: Commercial, institutional, offsite/modular, infrastructure

    • Regions: NSW, VIC, QLD, WA

    • Specialties: DfMA, BIM, turnkey delivery

    • Recent Projects: Parramatta Light Rail; Great Eastern Highway Bypass; Sydney ICC fit-out

13. Downer Group
    Integrated services across transport, utilities, and facilities, ranking in IBISWorld’s maintenance & operations sector.

    • Founded: 1933

    • Work Types: Civil, rail, roads, utilities maintenance

    • Regions: Nationwide, NZ, Asia, Americas

    • Specialties: Asset management, PPPs, lifecycle services

    • Recent Projects: City light rail maintenance; subsea cable installs; drainage upgrades

14. Watpac
    Civil, commercial, and mining-infrastructure builder with strong project management.

    • Founded: 1983

    • Work Types: Civil, commercial, residential, mining infrastructure

    • Regions: QLD, NSW, VIC, PNG

    • Specialties: Modular construction, PPPs, integrated delivery

    • Recent Projects: North Queensland Stadium; Townsville Entertainment Centre; Central Park Sydney

15. Probuild
    National tower specialist in mixed-use and high-rise residential projects.

    • Founded: 1987

    • Work Types: High-rise residential, commercial towers, mixed-use

    • Regions: NSW, VIC, QLD, WA

    • Specialties: Tower construction, podium complexes, end-to-end delivery

    • Recent Projects: Salesforce Tower Melbourne; World Tower Sydney; The Grove South Yarra

16. Built
    Private builder integrating sustainability consulting with general contracting.

    • Founded: 1998

    • Work Types: Commercial, residential, fit-out, refurbishment

    • Regions: NSW, VIC, QLD, NZ, UK

    • Specialties: Green building, urban regeneration, precinct delivery

    • Recent Projects: Parramatta Square; International Tower Sydney; Barangaroo precinct

17. Civmec
    Engineering & fabrication specialist in energy, resources, and marine sectors.

    • Founded: 1990

    • Work Types: Energy, resources, infrastructure, marine, defence

    • Regions: National, Asia

    • Specialties: Modular fabrication, heavy engineering, RTO training

    • Recent Projects: Offshore Patrol Vessel construction; LNG modules; bridge fabrication

18. Bouygues Construction (AUS)
    French multinational delivering green buildings and transport hubs.

    • Founded: 1952 (AUS arm 2000s)

    • Work Types: Commercial, residential, transport, energy

    • Regions: VIC, NSW

    • Specialties: Modular systems, PPPs, sustainability

    • Recent Projects: Sapphire Coast housing; Traralgon Transit Centre; UCI housing

19. McConnell Dowell
    NZ-born contractor excelling in tunnelling, marine, and industrial works.

    • Founded: 1961

    • Work Types: Civil, electrical, marine, mechanical, rail

    • Regions: AUS, NZ, Asia, Middle East

    • Specialties: Underground works, hydropower, structural steel

    • Recent Projects: Inland Rail Victoria; Epping Road Upgrade; METRONET Midland Station

20. Bechtel
    U.S. EPC giant active in LNG, rail, and water infrastructure across Australia.

    • Founded: 1898

    • Work Types: Energy, mining, transport, defence

    • Regions: QLD, WA, NT

    • Specialties: LNG plants, rail systems, petrochemicals

    • Recent Projects: Ichthys LNG; Pilbara rail expansions; Adelaide desalination plant

21. Hickory Group
    Lean construction leader in commercial towers and healthcare facilities.

    • Founded: 2006

    • Work Types: Commercial, healthcare, multiresidential

    • Regions: NSW, VIC, QLD

    • Specialties: Lean methods, integrated project delivery, adaptive reuse

    • Recent Projects: Darling Square towers; Nepean Hospital expansion; Green Square library

22. Buildcorp
    Family-owned commercial builder focusing on corporate and institutional fit-out.

    • Founded: 1990

    • Work Types: Commercial, education, fit-out, refurbishment

    • Regions: NSW, VIC, QLD

    • Specialties: WHS, sustainability, design-and-construct

    • Recent Projects: Sydney University Science Precinct; Optus HQ fit-out; Barangaroo fit-out

23. Icon Construction
    NSW specialist in affordable housing and community facilities.

    • Founded: 2003

    • Work Types: Residential, social housing, commercial

    • Regions: NSW, ACT

    • Specialties: Build-to-rent, multi-residential, community projects

    • Recent Projects: Aurora Place residences; Macquarie University colleges; social housing builds

24. WT Australia
    Regional civil contractor partnering on roads, utilities, and subdivisions.

    • Founded: 1985

    • Work Types: Civil, residential subdivisions, community facilities

    • Regions: NSW, QLD, VIC, SA

    • Specialties: Infrastructure delivery, joint ventures, local government works

    • Recent Projects: Riverlea subdivision; Sunshine Coast water upgrades; Bendigo South

25. Scentre Group (Builder Partnerships)
    Owner/operator of Westfield centres, collaborating with tier 1 builders for retail works.

    • Founded: 2014 (spin-out)

    • Work Types: Retail construction, refurbishment, mall expansions

    • Regions: Australia & NZ

    • Specialties: Large-scale retail fit-out, mixed-use retail precincts

    • Recent Projects: Westfield Bondi Junction revamp; Westfield Woden; Westfield Coomera

26. Acciona Australia
    Renewable-focused Spanish firm expanding civil and transport works locally.

    • Founded: 1997 (Acciona)

    • Work Types: Transport, water, renewable energy, civil works

    • Regions: QLD, VIC, NSW

    • Specialties: Wind farms, highway upgrades, rail tunnels

    • Recent Projects: Herries Range Wind Farm; Sydney Metro West; Pacific Highway upgrade

27. AECOM
    Global design & CM powerhouse underpinning smart-city and resilience projects.

    • Founded: 1990 (merger)

    • Work Types: Transport, buildings, water, environment, energy

    • Regions: Nationwide

    • Specialties: BIM, digital twins, sustainability planning

    • Recent Projects: Sydney Gateway; UTS Central; RPA Hospital expansion

28. Mirvac Construction
    Mirvac’s delivery arm driving its integrated residential and commercial pipeline.

    • Founded: 1972

    • Work Types: Residential, commercial, retail, mixed-use

    • Regions: NSW, VIC, QLD, WA

    • Specialties: Master-planning, green rating delivery, precinct activation

    • Recent Projects: Quay Quarter Sydney; The Ribbon Melbourne; Steel Blue Oval

29. Arup (Project Delivery)
    Engineering consultant with in-house build capability on niche infrastructure.

    • Founded: 1946 (global)

    • Work Types: Transport infrastructure, building services, environment

    • Regions: Australia-wide

    • Specialties: Structural engineering, façade engineering, sustainability

    • Recent Projects: Western Sydney Airport planning; Sydney Harbour Bridge conservation; Northern Beaches Hospital planning

30. Mott MacDonald
    Consultancy-turned-project manager offering end-to-end advisory and delivery.

    • Founded: 1902 (global)

    • Work Types: Transport, water, environment, buildings

    • Regions: Australia-wide

    • Specialties: Programme management, structural design, resilience consulting

    • Recent Projects: Western Sydney Airport; Northern Beaches Hospital; Sydney Metro planning

Partner with Australia’s Top  (Tier 1) Builders

Australia’s construction industry is underpinned by a diverse mix of multinational enterprises, family-owned firms, and niche specialists. These top builders & building contractors lead the way in innovation, sustainability, and community impact—solidifying their positions among the largest builders in Australia. Whether shaping urban skylines or delivering vital infrastructure, their combined expertise ensures Australia remains at the forefront of global construction excellence.

By partnering with any of these tier 1 construction companies, stakeholders can leverage decades of experience, proven safety records, and tailored solutions to meet the evolving demands of the market.