The 59 largest Construction companies in Ireland

Jones Engineeringjoneseng.com

Multi-disciplined engineering contracting company providing a complete range of engineering and building services installations globally, working with multi-nationals and delivering projects safely

Mercurymercuryeng.com

Design and manage complex engineering and construction projects for leading corporations, delivering innovative solutions that connect communities and businesses.

John Sisk & Son Ltdsisk.com

Innovative engineering and construction company with extensive operations across Ireland, UK, and Europe, providing comprehensive construction services since 1859.

Linesightlinesight.com

Provides professional consultancy, management support, and strategic advice to the global construction industry from concept to completion across diverse sectors worldwide.

Kirby Group Engineeringkirbygroup.com

A leading Mechanical and Electrical engineering contractor offering HV/MV design & build services, off-site manufacturing, and expertise in Data Centres, Life Sciences, and more

Dornandornan.ie

A multidisciplinary organization focusing on delivering high-quality Mechanical, Electrical, Instrumentation, and Commissioning services for various projects, prioritizing client satisfaction and safety

H&MV Engineeringhmvengineering.com

Global provider of specialist design, engineering, and construction services for data centers, substations, renewables, manufacturing, & pharmaceuticals with a focus on safety and sustainability

Designer Groupdesignergrp.com

International provider of innovative electrical and mechanical services, sustainable energy solutions, and industrial solutions, with a focus on safety, quality, and sustainability

JJ Rhatigan & Companyjjrhatigan.com

A leading general building contractor in Ireland and London, specializing in high-quality, sustainable construction projects for various sectors including commercial, residential, healthcare, and more

Suir Engineeringsuireng.com

A company with 40 years of international expertise in electrical, mechanical, and high voltage services, specializing in various sectors across Europe

Winthrop Technologieswinthrop.ie

A dedicated data centre delivery partner specializing in turnkey solutions for clients across Europe, offering design, construction, and commissioning services

KCC Groupthekccgroup.com

Specializes in providing comprehensive door, access control, glazing, and partition solutions, with a focus on quality, innovation, and customer satisfaction

Ward and Burkewardandburke.com

Delivers civil engineering construction solutions, specializing in bespoke design and quality construction of water and wastewater infrastructure, treatment processes, pumping, storage.

John Paul Constructionjohnpaul.ie

An international construction company offering services in infrastructure, fit-out, and project delivery with a focus on innovation, professionalism, and excellence

Wallswalls.ie

leading construction company operating across all sectors including commercial office, residential, data centres, pharmaceutical, and public sector projects

Cairncairnhomes.com

Focused on creating sustainable communities that support individuals in thriving Embracing the #BuiltForGood ethos to drive positive change

KSNksn.ie

An Irish-owned consultancy practice offering expert quantity surveying, cost management, and sustainability advice to maximize potential return for clients

Specialist Technical Services (STS Group)stsgroup.ie

Provider of electrical engineering, instrumentation, design, and commissioning services for various industries across Europe, Middle East, and UK with extensive experience and expertise

PJ Hegarty & Sonspjhegarty.ie

A progressive building and civil engineering company founded in 1925, working on projects in Ireland and the UK, with expertise in infrastructure and industrial facilities

Collen Constructioncollen.com

Established in 1810, a leading construction firm in Ireland offering services in management contracting, design & build, joint ventures, and turnkey contracts across various sectors

Munster Joinerymunsterjoinery.ie

Large manufacturer of energy efficient windows and doors in Europe, with operations in Ireland, Northern Ireland, and the UK serving international markets

Ardmacardmac.com

An award-winning international construction specialist delivering high-tech workspaces, cleanrooms, data centers, and refurbishments with a focus on innovation and quality

Glenveagh Properties plcglenveagh.ie

Leading Irish homebuilder focused on delivering sustainable, high-quality homes in diverse communities through innovation, integration, and a commitment to customer satisfaction

King & Moffatt Building Serviceskingmoffatt.com

Award-winning mechanical and electrical contractors operating across Ireland, the United Kingdom, and Mainland Europe for over 45 years

ORSors.ie

Leading provider of multidisciplinary design and build services, specializing in civil, structural engineering, project management, health and safety, and energy management for diverse clients.

CJKcjkengineering.ie

Irish-owned provider of mechanical and electrical services for industrial, pharmaceutical, public, and commercial sectors with over 25 years of experience

Flynnflynnmc.com

International construction business with diversified projects across Ireland, UK, and Europe Strong relationships with partners and clients ensure best-in-class project delivery in any sector

Elliott Groupelliottgroup.com

A leading construction company in Ireland with three generations of experience, delivering high-quality projects for prestigious clients with a focus on innovation and excellence

Tobermoretobermore.co.uk

Pioneering manufacturer of paving and walling products since 1942, offering a diverse range of styles, finishes, and sizes for UK and Ireland markets

Tritech Engineeringtritech.ie

A mechanical, electrical, and maintenance contractor with a focus on enhancing building performance through innovative solutions and high-quality engineering services

Gilbert-Ashgilbert-ash.com

Construction and fit out specialists with a collaborative and innovative approach to creating award-winning buildings through teamwork and problem-solving

Clancyclancy.ie

A leading construction organization in Ireland, specializing in restoration, retail, medical, food, and residential projects with a focus on safety and quality

Conackconack.ie

A Building & Civil Engineering company based in Limerick, with regional offices, specializing in quality projects across various sectors with client satisfaction as top priority

Ecocem Globalecocemglobal.com

Development and manufacturing of innovative cement technology reducing carbon emissions by 50%, enabling sustainable construction and industry decarbonization.

Portviewportview.co.uk

Specialist interior fit-out consultancy delivering exceptional spaces and experiences for brands and organisations across the UK and Ireland with trusted partnership.

SIG Irelandsig.ie

Provides specialist building materials and expert technical support for commercial and residential projects, delivering solutions across Ireland.

Vision Contractingvisioncontracting.ie

An Irish construction services company specializing in niche markets, known for complex project success, customer focus, and collaborative approach for enduring relationships

Construction Industry Federation (CIF)cif.ie

Represents the Irish construction industry, shaping policy, providing expert advice on industrial relations, contracts, procurement, planning, and safety for members.

Instrotec Ltdinstrotec.ie

An Irish company offering comprehensive services in Electrical and Instrumentation projects for industries like Pharmaceutical, Power, Semi-Conductor, Food, Drink, and water treatment sectors

Techrete UK & Irelandtechrete.com

A dynamic innovation-led designer, manufacturer, and installer of bespoke precast concrete products for the architectural market, offering cutting-edge solutions

Weltec Engineeringweltec.ie

A leading specialist in mechanical and electrical installation for large complex projects across multiple sectors, prioritizing excellence, quality, and safety

CUNNINGHAMcunninghamcontracts.com

A leading Main Contractor in Ireland, delivering successful projects in Mission Critical, Education, Healthcare, Fit Out, and Residential sectors with innovation and collaboration

Centum Engineering Servicescentum.ie

Specializing in construction solutions for various sectors, we provide tailored packages ensuring high-quality, cost-effective, and safe projects in UK, Ireland, and Europe

ROSSross-construct.com

Specialist engineering and construction consultancy providing innovative solutions for complex challenges in high technical facilities and pharmaceutical industries with a skilled team

Ward Personnelwardpersonnel.com

Specialist provider of labor, trades, technical, and management staff to the Irish Construction Industry, focusing on long-term client relationships and candidate quality

LPI Grouplpigroup.com

Professional contracting firm specializing in lightning protection systems, earthing systems, and surge protection devices with expertise in design, installation, and maintenance services

Clarkemclarke.co.uk

This company offers end-to-end facade services, specializing in external envelope, unitised facade, glazing, cladding, and lightweight steel framing for innovative, safe, and eco-sustainable buildings

Stewart Constructionstewart.ie

Leading main contractor delivering technically advanced building projects nationwide for commercial, industrial, health, retail, education, hospitality, and residential sectors.

Duggan Brothers (Contractors) Limiteddugganbrothers.ie

Leading Irish general building and civil engineering contractors, successfully completing prestigious projects across commercial, pharmaceutical, educational, healthcare, residential, and industrial sectors since 1923.

Banagher Precast Concretebanagherprecast.com

Design, manufacture prestressed bridge beams, reinforced precast concrete products for construction, civil engineering projects across UK, Ireland, Continental Europe.

PSEpse.ie

A leading energy technology solutions company providing backup power generation, battery storage systems, and energy management devices for commercial and industrial applications worldwide

Felix O'Hare & Co. Ltdfelixohare.com

An established building contractor with over 100 years of experience, known for combining traditional skills with professional management to deliver innovative solutions

Pure Fitoutpurefitout.com

The company specializes in sustainable construction and fit out services, managing projects of all sizes with a focus on quality and efficiency

William Farrell Limitedwfl.ie

An engineering solutions contractor specializing in commercial, industrial, medical, and educational sectors, offering design, build, installation, maintenance, and 24-hour services

CARLINcarlin.ie

Specializing in sustainable construction, we provide quantity surveying and project management services for bespoke homes and high-end residential developments, focusing on environmental impact

CME Industrialcmeind.com

An Irish engineering and fabrication company specializing in complex industrial projects, delivering quality products and services through diverse expertise and innovation

Tony O Donovan Office Interiorsofficeinteriors.ie

Specializing in high quality office interiors since 1995, offering a range of products and services including bespoke internal glazing and office fit outs

Tedwall Partitions Ltdtedwall.ie

An Irish company specializing in supply of glass partition systems, washroom systems, and storage wall for corporate, hospitality, and education sectors

Liftservliftserv.ie

The company supplies and installs goods and disabled access lifts for private and industrial projects in the Irish market, emphasizing client satisfaction