Singapore says it sidesteps about $300 million in construction costs by avoiding clashes among underground utilities through clearer shared mapping of underground space. The approach, highlighted by Minister Chee Hong Tat, centres on having a reliable picture of existing infrastructure below ground before projects proceed, reducing the likelihood of conflicting works during construction. By improving coordination and visibility of underground assets, the government can plan routes and interfaces for new developments more accurately, lowering rework, delays and additional construction requirements that typically arise when utility locations are discovered late or incorrectly. The reporting frames the savings as resulting from fewer disruptions linked to underground utility project clashes, rather than from changes to the scope of projects. Overall, the accounts emphasise that comprehensive underground data and coordination among stakeholders are critical to managing the complex network of infrastructure beneath cities and to keeping construction timelines and costs under control.