The Irish Construction News Top 40 Building Contractors 2023 listing is a snapshot of the building contractors’ sector of the Irish construction industry at the end of 2022.
No 1: John Sisk & Son
John Sisk & Son group turnover last year was just over €1.74bn up circa €250m on its 2021 figure of €1.485bn.
Total Turnover: €1,737,700,000
ROI Turnover:€997,800,000
International Turnover: €739,900,000
No 2: Winthrop
Winthrop is unique in being the only dedicated data-centre delivery partner providing turnkey solutions to its clients, from design right through construction and on to commissioning and hand-over.
Total Turnover: €1,033,579,000
ROI Turnover: €427,111,000
International Turnover: €606,468,000
No 3: Bam Ireland
BAM has been operating in Ireland for over 60 years and has delivered many of the country’s flagship infrastructure projects and landmark buildings. It employs over 3,000 people directly and indirectly
Total Turnover: €669M
ROI Turnover: €623M
International Turnover: €46M
No 4: John Paul Construction
2022 was another good year for John Paul Construction, with turnover reaching €605m, €507m of which was generated in Ireland. The company continued its journey of sectoral and geographic diversification, delivering complex projects across all sectors of the industry in Ireland, the UK and the Middle East.
Total Turnover: €605M
ROI Turnover: €507M
International Turnover: €98M
No 5: PJ Hegarty & Sons UC
Established in 1925, building contractor PJ Hegarty & Sons UC operates throughout Ireland and the UK, with offices in Dublin, Cork, Limerick and London.
Total Turnover:€501M
ROI Turnover: €433M
International Turnover: €68M
No 6: Walls Construction Ltd
The turnover of Walls Construction in 2022 was €473m, up €170m on its turnover of €303m in 2021.
Total Turnover: €473M
ROI Turnover: €473M
No 7: Collen Construction
Established in 1810 and still a family-owned business, Collen has offices in Dublin, Sweden and Germany and employs 400 people. The company’s clients range from large-scale multinational corporations to private companies and state bodies. Collen has established a reputation for providing complex projects on time and within budget.
Turnover: €450M
ROI Turnover: €204M
International Turnover: €246M
No 8: Bennett (Construction) Ltd
Bennett (Construction) Ltd is a family-own tier-1 construction contractor that has been at the forefront of construction for over 100 years and is now in its fourth generation.
Total Turnover: €345M
ROI Turnover: €265M
International Turnover: €80M
No 9: JJ Rhatigan & Company
Tier-1 main contractor JJ Rhatigan & Company was established in 1952 and remains a family-oriented operation, carrying on a strong tradition of building quality and innovation.
Total Turnover: €320M
ROI Turnover: €229.7M
International Turnover: €90.3M
No 10: Murphy Ireland
Murphy Ireland is a leading multi-disciplinary engineering and construction company that directly employs over 700 engineers, designers, technicians, managers, and operatives.
Total Turnover: €225M
ROI Turnover: €185M
International Turnover: €40M
No 11: Wills Bros
Founded in 1972 and celebrating 50 years of business in 2022, Wills Bros is a civil engineering contractor at the forefront of national infrastructure development in Ireland, the UK and Europe.
Total Turnover: €200M
ROI Turnover: €126M
International Turnover: €74M
No 12: Ardmac Group Ltd
Ardmac delivers high-value workspaces and technical environments in Ireland and across Europe. Headquartered in Dublin, with offices in Manchester, Craigavon, Brussels, Cork and Switzerland, Ardmac supports projects all over Ireland, the UK and Europe, and in 2021 completed expansion into Finland and Germany.
Total Turnover: €193.5M
ROI Turnover: €112.2M
International Turnover: €81.3M
No 13: mac-group
The mac-group was founded in 2002 with a mission “to construct, restore and repurpose buildings to exceed the expectations of clients, consultants and staff, and to question and improve upon all that has gone before”.
Total Turnover: €188.7MM
ROI Turnover: €112.3M
International Turnover: €76.4M
N0 14: Conack Construction
Conack Construction is a general building and civil engineering contractor founded in 2008 by joint managing directors Kieran Cusack and Tom O’Connor.
Total Turnover: €152,647,913
ROI Turnover: €152,647,913
No 15: Elliott Group
Founded in the 1920s, Elliott Group is one of the most respected construction companies in Ireland and the United Kingdom (UK).
Total Turnover: €145M
ROI Turnover: €120M
International Turnover: €25M
No 16: Errigal Contracts LTD
Errigal was founded in 1996 by co-owners and joint managing directors Damien Treanor and Cormac McCloskey. Its headquarters in Monaghan has a dedicated manufacturing facility, with regional offices in London, Derry, Zurich, Amsterdam and, more recently, Frankfurt.
Total Turnover: €141M
ROI Turnover: €37M
International Turnover: €104M
No 17: Flynn
Total Turnover: €132M
ROI Turnover: €101.3M
International Turnover: €30.7M
Flynn has been in business for 18 years and provides a comprehensive range of construction management, fit-out and main contracting services.
No 18: Monami Construction
Total Turnover: €126,399,760
ROI Turnover: €126,399,760
Monami Construction provides a dynamic, innovative and highly experienced building service to clients of the construction industry.
No 19: Jons Civil Engineering Company Ltd
Total Turnover: €102M
ROI Turnover: €102M
Jons Civil Engineering Company Ltd (JCEL) has been in operation since 1983. Since that time, it has successfully delivered over 330 major infrastructural projects.
No 20: Townmore Construction
Townmore was established in Tullamore, Co Offaly, by the Screeney family. Over the past 15 years, the company has become an international contracting business with offices in Dublin, Cork, and London, with its headquarters in Tullamore.
Total Turnover: €101M
ROI Turnover: €75M
International Turnover: €26M
No 25: Ganson Building & Civil Engineering Ltd
Total Turnover: €85,044,589
ROI Turnover: €61,414,926
International Turnover: €23,629,663
No 30: Mannings Construction Group
Total Turnover: €57.7M
ROI Turnover: €42.5M
International Turnover: €15.2M

No 31: Adston Group Holdings Ltd
Total Turnover: €55,996,693
ROI Turnover: €33,582,762
International Turnover: €22,413,931

No 32: Clonmel Enterprises Ltd
Total Turnover: €55,970,799
ROI Turnover: €55,970,799

No 33: DFL
Total Turnover: €53,548,581
ROI Turnover: €51,298,140
International Turnover: €2,250,441

No 34: Kilcawley Building & Civil Engineering (Sligo) Ltd
Total Turnover: €50.3M
ROI Turnover: €50.3M

No 35: T&I Fit-Outs
Total Turnover: €49M
ROI Turnover: €49M

No 36: Townlink
Total Turnover: €48M
ROI Turnover: €48M

No 36: Arkil Holding Ltd
Total Turnover: €45,920,000
ROI Turnover: €45,871,000
International Turnover: €49,000
