T. Connolly & Sons Ltd. (TCSL) is an Irish Construction Company which was founded in 1976 by Thomas Connolly. For nearly four decades TCSL has a built a reputation for very high quality standards of work whilst delivering projects on time and within budget.
We place a large emphasis on teamwork and developing our employees, some of our key employees have been with us for nearly thirty years ensuring continuity in our work practices and a shared knowledge and experience which is passed on to any new employees. TCSL have a personal “hands on” approach to contracts which always creates a high level of trust and integrity between ourselves, the clients, design teams and our suppliers and sub-contractors.

Energy Providers

Many of our projects were with ESB Networks in upgrading existing substations, new substations and Civil Works.

Medical & Hospital

We have many years of experience working within this sector having completed projects of a complex and intricate nature within Portlaoise, Tullamore, Roscommon and Ballinasloe.

Commercial & Public Service

Our clients include the OPW, Irish Waterways, Department Of Education and many private commercial companies.