John Sisk and Son

John Sisk & Son (Holdings) Limited is a private limited company with a turnover of over €2.5 billion, employing over 2,400 permanent staff and headquarters in Dublin, Republic of Ireland. John Sisk & Son (Holdings) Limited has extensive operations across Ireland, the United Kingdom and mainland Europe. The Company’s core activities broadly cover the delivery of projects and programmes in key sectors such as Data and Technology, Pharmaceutical and Life Sciences, Infrastructure, Transportation, Healthcare, Commercial, Residential, Retail, Industrial, Leisure, Education and Energy. In order to carry out our works efficiently we have offices situated throughout Ireland and the UK. John Sisk & Son (Holdings) Limited incorporates a number of entities which are either finance, construction trading, property, facilities management, manufacturing or water treatment companies. The details of these can be found in the Organisation boundaries section below.
John Sisk & Son (Holdings) Limited recognises that its operations may have a direct impact on the environment and has made environmental management an integral part of the management system of the Company. John Sisk & Son (Holdings) Limited manages, monitors and improves its environmental performance through actively offering leadership and implementation of a formal environmental management system certified to the internationally recognised ISO 14001 standard, and energy management system certified to the internationally recognised ISO 50001 standard.