CORENET X BIM Requirements & Timeline [2026 Guide]

CORENET X is a multi-agency effort to streamline the regulatory approval process in Singapore. The agencies involved include BCA, URA, NEA, LTA, and PUB. One of the key features of CORENET X BIM submissions is the standardization of data structure in the IFC+SG format. This ensures that agencies have the necessary information on hand to approve projects.

From 1 October 2026, all new building projects will require BIM submission via the CORENET X portal. This article explains what CORENET X is and how you can prepare for it.

What is IFC+SG?

Industry Foundation Classes (IFC) is a standard maintained by buildingSmart, an international organization. It provides a common data schema that enables different BIM software to exchange information. However, the international IFC4 schema has limitations—different jurisdictions have unique data requirements that cannot be fully captured in a common file format.

IFC+SG is Singapore's extension of the internationally-recognized IFC4 schema. It contains additional parameters required by Singapore's regulatory agencies to issue construction permits.

For example, BCA requires accessibility features to be captured in the BIM model to ensure that new buildings are designed accessibly for disabled users.

The complete mapping of agency requirements to IFC+SG parameters is available in the industry mapping table, which contains the full set of parameters needed by each regulatory agency.

Mandatory BIM Submissions

CORENET X BIM submissions affect all players in the built-environment supply chain—from architects to main contractors and subcontractors. All players are expected to ensure that BIM data is properly structured in IFC+SG format.

Often, the Architect acts as the Project Coordinator to federate the BIM submissions and submit them via the CORENET X web portal. The four key gateways for BIM submission are: Design Gateway, Piling Gateway, Construction Gateway, and Completion Gateway.

Each gateway has specific BIM requirements. It is essential for the Project Coordinator to ensure that the BIM models at each gateway contain the necessary parameters for BIM submission.

How to Prepare

BCA has worked with key software vendors such as Autodesk, Trimble, Graphisoft, and Bentley Systems to develop export guides. Each vendor provides specific resources to ensure exported models include the necessary IFC+SG parameters.

For non-BIM users such as project consultants, the CORENET X Sandbox provides training on the overall submission workflow.

Validating BIM Models

QPs must submit federated, clash-free models with all required IFC+SG parameters. Missing or incorrect values may result in Written Directions from authorities, potentially causing project delays. The Bimeco Validator is a free tool designed to support consultants and contractors with CORENET X compliance. Key features include model federation, IFC+SG parameter checking, and clash detection.

Conclusion

CORENET X marks a significant step in Singapore's regulatory digitalization. The shift from 2D drawings to 3D BIM models enables more efficient reviews, better coordination, and automated compliance checking.

With mandatory submissions starting 1 October 2026, firms should prepare early—whether through in-house teams or external providers—to avoid last-minute complications and ensure smooth regulatory approval.

For firms needing support with CORENET X submissions, contact our BIM team to discuss how we can help you prepare compliant models for regulatory approval.