In short: CORENET-X is the Building and Construction Authority of Singapore's new digital regulatory submission platform, replacing the legacy CORENET system. It requires BIM-based, model-driven submissions federated across architectural, structural, and MEP disciplines. Since 1 October 2025, CORENET-X is mandatory for all new projects with gross floor area (GFA) of 30,000 m² or more. From 1 October 2026, the mandate extends to all new building projects regardless of size. Pr