SIAC is a multi-disciplined construction group based in Dublin, with regional and divisional offices in Cork, Galway and the UK. It is committed to delivering projects on programme and within budget, in a safe and environmentally-friendly manner. 

SIAC’s principal disciplines include civil engineering, roofing and cladding, paving/bituminous products, traffic management solutions, and mechanical and electrical works. Its teams of professionals work closely with its design partners and clients to deliver a flexible and innovative service in every project it undertakes. 

“We recognise that long-term repeat business relationships with our customers are fundamental to the continued success of SIAC,” comments Martin Maher, CEO, SIAC. “Our aim is for customers to value the service we provide as highly as we value their business.” 

SIAC’s commitment to continuous improvement in the areas of safety, health and environmental management has been recognised with National Irish Safety Organisation (NISO) awards and an All-Ireland Occupational Safety award. 

As an organisation, SIAC is committed to workplace excellence. It recognises that its employees are its primary resource and has a well-established continuous professional development programme, led by its CPD committee, to support and develop them. SIAC is an Engineers Ireland CPD-accredited company and on the CIRI register. It recognises the value of diversity in the workplace and is proud to be an equal opportunities employer.

Total Turnover:


ROI Turnover:


International Turnover:


M7 Upgrade, a SIAC/Colas Joint Venture.

YEAR END: 30/06/20 

ADDRESS: Dolcain House, Monastery Road, Clondalkin, Dublin 22. 

PHONE: 01 403 3111 


KEY EXECUTIVES: Martin Maher, Chief Executive Officer; Pearse Ferguson, Chief Financial Officer. 

KEY ACTIVITIES: Civil Engineering.