SIAC is a multi-disciplined construction group based in Dublin, with regional and divisional offices in Cork and Galway. Its principal divisions comprise civil engineering, including pavement works, roofing and cladding, and mechanical and electrical.


In May 2023, following the appointment of an official liquidator to three companies in the SIAC construction group, an order was made to wind up the firms.

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Each division delivers large and small projects for its broad client base. It is committed to delivering projects on programme and within budget in a safe and environmentally-friendly manner.

It is committed to delivering projects on programme and within budget in a safe and environmentally-friendly manner.

SIAC project approach

SIAC’s teams of professionals work closely with its design partners and clients to deliver a flexible and innovative service on every project it undertakes. It has successfully delivered many key infrastructural projects within Ireland, collaborating with clients and national and international joint-venture partners.

Martin Maher, CEO, SIAC, says: “We recognise that long-term repeat business relationships with our customers coupled with project delivery to the highest standards with a strong emphasis on health, safety, and environment are fundamental to the continued success of SIAC. Our aim is for customers to value the service we provide as highly as we value their business.”

SIAC employee development

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 (CDP) programme, led by its CPD committee, to support and provide development opportunities for all of its employees. 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.

Merck Sharpe & Domhe – MSD Biotech facility, Swords, Co. Dublin.
Hole in the Wall Road project, Balgriffin, Co Dublin.

No 14: SIAC Construction Group

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

PHONE: 01 403 3111 


LINKEDIN: SIAC Construction Ltd

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

KEY ACTIVITIES: Civil Engineering. 

YEAR END: 30/06/21