In this episode, we cover the specialized Public Works Investigation Contract Conditions used for site investigation and preparatory works in Irish public construction projects. These contract conditions are tailored for projects where detailed preliminary data on site conditions is essential for the main construction work. We discuss the scope of these contracts, including risk allocation, requirements for technical accuracy, and obligations on reporting findings. Key topics include the contractor’s role in data collection, methods for managing unforeseen site conditions, and how these findings influence project planning and budgeting in subsequent phases. This episode is vital for understanding the foundational steps of site assessment within the Public Works framework.