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  • Exceeding our Clients Expectations

  • Prioritising Health and Safety

  • Quality and Excellence for over 200 years

  • Value Efficiency and Innovation

  • Skills and Craftmanship at our core


Commenting on the company's listing at No. 10 as noted in the table of the Top Irish Contractors in the Linesight 2017 Handbook, Managing Director Tommy Drumm attributed the company's success to its ability to satisfy client requirements and achieve the highest standards.

"Completing projects within programme, meeting budget constraints and providing a quality service, ensures the company is succeeding in forging strong relationships with its clients.  Our Clients are reassured by the high level of service provided by Collen staff both onsite and behind the scenes". 


Ireland, UK, Germany, Sweden 

Collen Construction is renowned for building long-lasting relationships with Clients, Consultants and Supply Chain members and at the heart of these relationships, is a common vision: to deliver projects efficiently, effectively and to the highest quality standards.  

In continuing to build upon relationships with existing Clients, Collen has expanded operations within mainland Europe, to deliver the same first class standard of projects that the firm has delivered in Ireland.   

As a result of the Company’s continued expansion in mainland Europe, Collen AB and Collen GmbH are currently seeking new supply partners to strengthen our existing supply chain in Europe.  If you are a Company focused on building long-lasting partnerships through delivery of high quality products and services, then we would like to hear from you.    

For further information please contact Tom O’Connor at construction@collen.com 



200 Years of Building Excellence

Collen Construction is a family owned business established in 1810 with a strong reputation for building quality and excellence.

The company has successfully tendered and negotiated projects for a range of clients including large multi-national corporations, private companies, local authorities and state authorities. We have established a reputation for providing complex projects on time and within budget.

Latest News

Collen Project Manager Alan Barnes wins CIOB Construction Manager of the Year 2019 More Details

Collen Construction named Contractor of the Year 2019 More Details

Collen wins ICE Awards for Excellence in Health, Safety and Wellbeing More Details

Collen AB Charity Cycle More Details

Collen Sponsor Irish Men's Over 45's Hockey Team More Details

Affidea ExpressCare Clinic Tallaght More Details

Crestcom 'Bullet Proof Manager' Leadership Course More Details

Bray Primary Care Centre Sod Turning More Details

4th of July 'Safety Thank You BBQ' More Details

Collen Standing Down for Safety More Details

Irish Construction Industry Awards 2018 More Details

Tommy Drumm guest speaks at the National Construction Summit ISO 45001 Seminar More Details

Collen Construction commemorate Workers' Memorial Day More Details

Collen Construction attend the ICOMOS International Meeting on the Sustainable Development Goals More Details

NSAI launch new Health and Safety Standard ISO45001 in conjunction with Collen Construction Ltd More Details

Collen Construction Awarded contract for Brickfield Lane Student Accommodation More Details

Tommy Drumm, Managing Director featured in the Irish Independent More Details

September Safety Initiative - Mindfulness More Details

CIF Construction Safety Week More Details

Inaugural Collen Trophy Presented at Dun Laoghaire Regatta More Details

Collen Construction 'Safety for All' Seminar More Details

Horizon Logistics Park Phase 2 Complete More Details

Audi's new €20 million flagship showroom in Dublin is now complete More Details

New extension to Frascati Shopping Centre Blackrock More Details

Collen Construction are the first Tier One Contractor to achieve ISO 9001:2015 & 14001:2015 Accreditation with NSAI. More Details

Recognition of 50,000 Safe Working Hours More Details

Works in Dublin Airport are now complete More Details

New €40m Multi-Storey office development in Central Park is now complete More Details














ISO 45001

Occupational Health and Safety

The world's first Occupational Health and Safety International Standard, ISO 45001, was published on March 12th, 2018. ISO 45001 will give organisations an internationally recognised occupational health and safety standard to follow.

The National Standards Authority of Ireland (NSAI) selected Collen Construction to be the first company in Ireland to go through the ISO 45001 audit process. Collen Construction will be among one of the first organisations in the world to achieve certification to this new standard.

More Details


Collen GmbH

An Taoiseach Enda Kenny officially opened our new Collen GmbH offices in Frankurt Germany on Thursday April 6th 2017. More Details

Joe Dillon (European Commercial Manager), Tom O'Connor (European Director), David Lee (Construction Director), An Taoiseach Enda Kenny, Kara Stuart (Company Secretary), Gerard Kelly (Senior Project Manager) and Julie Sinnamon (CEO Enterprise Ireland). 


200 Years

Building Excellence