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.

Sisk

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

No 2: Winthrop

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

Armatherm
John Paul

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

Medite
Collen

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

Walls

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

Pipelife
BAM

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

PJ Hegarty

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

Bennett

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

JJ Rhatigan

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

Murphy

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

Ardmac

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

Elliott Group

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

Conack

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

Wills Bros

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

Errigal

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

Flynn

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.

Vision Contracting

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.

Duggan

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.

Monami Construction

No 20: Monami Construction

Total Turnover€115,885,598

ROI Turnover: €115,885,598

Monami Construction provides a dynamic, innovative and highly experienced building service to the construction industry.

Jons

No 21: Jons Civil Engineering Company Ltd

Total Turnover: €115M

ROI Turnover: €115M

Coffey Construction

No 22: Coffey

Total Turnover: €114.4M

ROI Turnover: €104.2M

International Turnover: €10.2M

No 23: Townmore Construction

Total Turnover: €104M

ROI Turnover: €82M

International Turnover: €22M

ABM

No 24: ABM Group

Total Turnover: €100.4M

ROI Turnover: €71.4M

International Turnover: €29M

Ganson

No 25: Ganson Building & Civil Engineering Ltd

Total Turnover: €97M

ROI Turnover: €73M

International Turnover: €24M

Gem

No 26: Gem Construction Company Limited

Total Turnover€91.2M

ROI Turnover: €91.2M

Clancy

No 27: Clancy Construction

Total Turnover: €76M

ROI Turnover: €76M

Clonmel Enterprises

No 28: Clonmel Enterprises Ltd

Total Turnover€67,854,000

ROI Turnover: €67,854,000

Stewart Construction

No 29: Stewart Construction

Total Turnover: €66M

ROI Turnover: €66M

MMD

No 30: MMD Construction

Total Turnover: €62.6M

ROI Turnover: €62.6M

DFL

No 31: David Flynn Ltd

Total Turnover€61,191,277

ROI Turnover: €60,750,000

International Turnover: €441,277

Townlink

No 32: Townlink

Total Turnover: €60M

ROI Turnover: €60M

Arkil

No 33: Arkil Holding Ltd

Total Turnover: €53.04M

ROI Turnover: €53.01M

International Turnover: €30,000

T&I Fitouts

No 34: T&I Fit-Outs

Total Turnover: €52M

ROI Turnover: €52M

Kilcawley

No 35: Kilcawley Construction

Total Turnover: €51.25M

ROI Turnover: €51.25M

ClearyDoyle

No 36: ClearyDoyle

Total Turnover: €50M

ROI Turnover: €50M

Shareridge

No 37: Shareridge Civil Engineering

Total Turnover: €49.8M

ROI Turnover: €49.8M

Manning

No 38: Mannings Construction

Total Turnover: €48M

ROI Turnover: €30M

International Turnover: €18M

Purcell

No 39: Purcell Construction

Total Turnover: €43.6M

ROI Turnover: €43.6M

Mythen Construction

No 40: Mythen Construction

Total Turnover: €32,343,811

ROI Turnover: €32,343,811