Collen reports strong year of growth as revenues rise to €1.18 billion

Leading Irish construction company reports revenue growth of 79% to year ending 31 March 2025

Collen, one of Ireland’s largest family-owned construction groups, has reported a rise in revenue and profitability for the year ended 31 March 2025, reflecting consistent and steady growth across its operations in Ireland, the UK and mainland Europe.

According to the latest audited results, Group revenue for the period 1 April 2024 to 31 March 2025 grew by 79% to €1.18 billion, up from €660 million for the same period last year. This strong year-on-year growth mirrors the significant surge in demand coming from Collen’s longstanding clients in the technology sector across Europe and the UK. The profit after tax for the period was €42 million up from €18.2m in 2024 and the group has no bank debt and significant net assets retained within this growing business.

“Our 2025 performance reflects the breadth of our portfolio and the work delivered by our committed teams across all of the regions in which we operate,” said Leslie FitzPatrick, Chief Financial Officer.

“Revenue and profit growth were achieved alongside continued investment in the business, our people and a focus on financial discipline. We expect demand in the data and technology sectors to remain strong, with additional opportunities emerging in critical infrastructure, energy, residential and healthcare. Our order book provides a solid platform for the year ahead.”

With a team of more than 450 direct staff and another 5,000 people within its supply chain working across its various sites, the eighth-generation business is positioning itself for its next phase of growth and has strengthened its capabilities with the appointment of Mark McGreevy as Chief Executive Officer, from January 2026. McGreevy, a Board member since 2024, brings over 30 years of local and international industry experience to the role.

Stable outlook

Collen said it anticipates a stable outlook for the Irish construction sector and welcomed the recent publication of the Government’s Accelerating Infrastructure Report, noting the clarity it provides for national investment priorities to help drive the efficient delivery of infrastructure across Ireland. The company confirmed that it intends to support the delivery of planned critical infrastructure as outlined.

Scale

Collen is one of Ireland’s leading general contractors combining extensive Data Centre capability with a fully integrated design and build capability that extends to projects in Ireland, UK, Germany, Sweden, Finland, Denmark and other northern European markets.

Founded in Ireland, Collen is an Irish-based general contractor delivering projects across all major sectors. While maintaining a strong focus on its domestic market, the group now derives the majority of its turnover from projects throughout Europe, underscoring the scale, reach and diversity of its operations

About Collen

Founded in 1810, Collen is an eighth generation, family-owned construction group headquartered in Dublin and operating across Ireland, the UK and mainland Europe.

The company works across technology, power generation, residential, healthcare, commercial and other critical-infrastructure sectors.