Tommy Drumm, Managing Director, Collen Construction.

Established in 1810 and still family-owned, Collen has offices in Dublin, Sweden and Germany and employs 400 people. The company’s clients range from large multinational corporations to private companies and state bodies. Collen has established a reputation for delivering complex projects on time and within budget.

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Collen Construction

Collen is accredited to ISO 45001, ISO 9001, ISO 14001, and ISO 50001, and in 2021 it achieved ISO 27001:2017 accreditation for its Information Security Management System.

Business improvement

Over the past year, Collen has made significant changes to the structure of its senior management team in order to meet the challenges of operating in both Irish and international markets in the construction industry.

In order to move with an evolving industry, Collen has introduced a variety of flexible working options that staff can avail of to ensure a more consistent work-life balance. Through this, Collen hopes to improve employee retention, motivation, performance and productivity.

Collen Construction
Two South County, Leopardstown, Dublin.

Collen recently completed two commercial projects, the Haymarket in Smithfield, Dublin and the practical competition of 45 apartments over Frascati Shopping Centre in Blackrock, where Collen has had a presence over the past few years.

Works are still underway on two landmark developments in Dublin: The Sidings, a LEED-Platinum office development for Bartra Capital, and the Premier Inn hotel and offices for Glenveagh.

Collen has also been carrying out significant infrastructure upgrade works at Dublin and Cork airports. These works involve the installation of a new baggage handling system and the construction of a new building to facilitate these upgrades.

In addition to these projects, the company currently has data halls under construction in Ireland, Sweden, Denmark and Germany.

Overview and outlook

Collen managing director, Tommy Drumm, commented on the company’s activities over the past year, saying, “Collen’s remarkable growth in Europe has forged an exciting path, as we expanded our presence from Ireland into Sweden, Denmark, Finland, the UK and Germany. Our expanding European presence has laid the foundation for a prosperous future for the company. We are fortunate that our hyperscale data-centre clients regard Collen as safety leaders, and as we mark the impressive milestone of two years in our ‘Creating Safer Sites’ programme, its resounding success is evident throughout our business, bringing an extraordinary positive behavioural-based safety culture.”

Collen Construction
Frascati apartment developmment, Blackrock, Co Dublin.
Collen Construction
Haymarket office development, Smithfield, Dublin.

No 7: Collen Construction

ADDRESS: River House, East Wall Road, Dublin 3.

PHONE: 01 874 5411



TWITTER: @CollenConstruct

KEY EXECUTIVES: Neil Collen, Chairman; Tommy Drumm, Managing Director; Kara Stuart, CEO; Declan Lowry, Director; David Lee, Director; Tom O’Connor, Director; Leslie Fitzpatrick, Finance Director; Philip Walsh, Financial Controller.

KEY ACTIVITIES: Main Contractor

YEAR-END: 31/03/2023