Irish Construction News Top 40 Building Contractors 2024

The Irish Construction News Top 40 Building Contractors 2024 listing is a snapshot of the building contractors’ sector of the Irish construction industry at the end of 2023.

No 1: John Sisk & Son

John Sisk & Son group turnover in 2023 was just over €2.47bn, up circa €730m on its 2022 figure of €1.74bn.

Total Turnover: €2,471,200,000

ROI Turnover:€1,394,800,000

International Turnover: €1,076,400,000

Winthrop Technologies Limited, Europe’s leading dedicated turnkey data centre delivery provider, in April 2024 announced a strategic partnership with funds managed by Blackstone Tactical Opportunities.

Total Turnover: €1,277,248,601

ROI Turnover: €476,076,112

International Turnover: €801,172,489

No 3: John Paul Construction

John Paul Construction had another strong year in 2023, with an overall turnover of €708m, of which Irish turnover was €567m, and several key milestones were reached with a healthy pipeline of projects.

Total Turnover: €708M

ROI Turnover: €576M

International Turnover: €141M

No 4: Collen Construction

Established in 1810 and still family-owned, Collen has offices in Ireland, the UK, Sweden and Denmark, and it employs 400 people.

Turnover: €675M

ROI Turnover: €203M

International Turnover: €472M

No 5: Walls Construction Ltd

Walls Construction’s turnover in 2023 was €570m, an increase of 21% over the previous year, and the company is projecting that its 2024 turnover will exceed €625m.

Total Turnover: €570M

ROI Turnover: €570M

No 6: BAM Ireland

BAM creates, enriches and maintains buildings and infrastructure across the UK & Ireland. For over 150 years, it has been dedicated to enhancing lives by creating sustainable environments and communities where people can live, work and thrive.

Total Turnover: €506M

ROI Turnover: €463M

International Turnover: €43M

No 7: PJ Hegarty & Sons UC

Founded in 1925, PJ Hegarty has become synonymous with excellence in the construction industry in Ireland.

Total Turnover:€478M

ROI Turnover: €4o3M

International Turnover: €75M

No 8: Bennett (Construction) Ltd

Bennett (Construction) Ltd is a leading construction company with a diverse portfolio spanning Ireland and the UK. In Ireland, Bennett has excelled in data centre construction and residential/retail transformations over recent years.

Total Turnover: €369M

ROI Turnover: €274M

International Turnover: €95M

No 9: JJ Rhatigan & Company

JJ Rhatigan & Company (JJR) has been a stalwart of the Irish construction sector for the past seven decades, with its projects defining skylines across Ireland and the UK.

Total Turnover: €351M

ROI Turnover: €251.5M

International Turnover: €99.5M

No 10: Murphy

Murphy is a leading multidisciplinary engineering and construction company that directly employs over 750 engineers, designers, technicians, managers, and operatives in Ireland.

Total Turnover: €250M

ROI Turnover: €217.5M

International Turnover: €32.5M

No 11: Ardmac

Ardmac delivers high-value workspaces and technical environments in Ireland, the UK, across mainland Europe and further afield. Headquartered in Dublin, with offices in Manchester, Craigavon, Cork, Brussels and Switzerland, the company employs more than 520 people. Ardmac supports projects all over Ireland, the UK, Denmark, Belgium, the Netherlands, Germany, Austria, Switzerland, Finland, and recently in Africa.

Total Turnover: €230M

ROI Turnover: €140.25M

International Turnover: €89.75M

No 12: Elliott Group

Elliott Group is one of the leading construction companies in Ireland and the UK, driven by hands-on dedication and a commitment to excellence.

Total Turnover: €215M

ROI Turnover: €150M

International Turnover: €65M

N0 13: Conack Construction

The past year has been transformative for Conack Construction, marked by strategic growth and ambitious projects.

Total Turnover: €196,693,213

ROI Turnover: €196,693,213

No 14: Wills Bros

In business for over 50 years, Wills Bros is a civil engineering contractor at the forefront of national infrastructure development in Ireland and the UK.

Total Turnover: €185M

ROI Turnover: €145M

International Turnover: €40M

No 15: Errigal Contracts LTD

Errigal was founded in 1996 by co-owners and joint managing directors Damien Treanor and Cormac McCloskey.

Total Turnover: €157M

ROI Turnover: €39M

International Turnover: €118M

No 16: Glanua

Glanua is an industry leader in providing innovative and sustainable engineering solutions to design, build and operate critical water and wastewater infrastructure across Ireland and the UK.

Total Turnover: €150M

ROI Turnover: €110M

International Turnover: €40M

No 17: Flynn

Total Turnover: €140,164,069

ROI Turnover: €122,021,118

International Turnover: €18,142,951

Flynn has been in business for 20 years and provides a comprehensive range of mission-critical projects, construction management, fit-out and main contracting services.

No 18: Vision Contracting

Total Turnover: €123.2M

ROI Turnover: €123.2M

Established in 2011, Vision Contracting Limited is a national main contractor and construction management services company headquartered in Cork and operates across several niche markets.

No 19: Duggan Brothers Ltd

Total Turnover: €119M

ROI Turnover: €119M

In 2023, Duggan Brothers (Contractors) Ltd reaffirmed its commitment to excellence by safely delivering projects of unparalleled quality, on time, and within budget while prioritising sustainability and collaboration.