BIM Submission in Singapore: What Project Teams Need to Know About CORENET X (2025)
Published by Beyond+ | BIM Services Singapore For a side-by-side breakdown of what changed, see our CORENET X vs CORENET 2.0 comparison.
From 1 October 2025, Building Information Modelling submission via CORENET X becomes mandatory for new building projects of 30,000 square metres gross floor area and above in Singapore, extending to all new projects by October 2026. This regulatory shift represents a more structured approach to how building information is reviewed, approved, and managed across the project lifecycle.
For qualified persons, consultants, contractors, and project teams, understanding CORENET X submission requirements is no longer optional. The way architectural, structural, and MEP models are prepared, coordinated, and submitted now directly impacts regulatory approval timelines and project progression.
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Explore CORENET X Services →This guide explains what BIM submission in Singapore actually requires, how CORENET X functions as Singapore’s regulatory gateway, and what teams need to do to ensure submission readiness.
What is CORENET X?
CORENET X is Singapore’s Integrated Digital Shopfront for building regulatory approval. Developed by the Building and Construction Authority (BCA), it serves as the submission portal for building works that require BCA, SCDF (Singapore Civil Defence Force), and PUB (Public Utilities Board) approval.
Unlike traditional 2D drawing submissions, CORENET X supports Building Information Modelling submissions in IFC+SG format. This allows regulatory agencies to review building designs through a coordinated BIM model, improving clarity, reducing ambiguity, and enabling more efficient compliance checking.
Why CORENET X matters:
• Centralizes submission to multiple regulatory authorities
• Supports automated compliance checking for certain building code requirements
• Moves Singapore’s built environment sector toward more structured digital delivery
• Prepares the industry for more advanced digital workflows across the project lifecycle
Beyond+ supports project teams with CORENET X submission readiness through model validation, IFC+SG export preparation, and coordination support. Learn more about our CORENET X Support services.
Who Needs to Submit BIM Models via CORENET X?
BIM submission via CORENET X applies progressively to new building projects based on gross floor area thresholds and project type.
From 1 October 2025:
• New projects with a GFA of 30,000 square metres and above (extending to all new projects by October 2026)
Who is responsible:
• Qualified Persons (QPs): Architects and engineers responsible for regulatory submission
• Consultants: Design teams preparing architectural, structural, and MEP BIM models
• Contractors: Where contractor-developed models support submission or coordination
• BIM Coordinators: Teams ensuring model alignment and submission readiness
The submission format must follow BCA’s IFC+SG specification, which defines how geometry, spatial structure, and building information are structured for regulatory review.
BIM Submission Requirements in Singapore (2025)
Singapore’s BIM submission framework is based on IFC+SG, a standardized format derived from the international IFC schema but adapted for Singapore’s regulatory context.
Core submission requirements:
1. IFC+SG Format
All BIM models submitted via CORENET X must be exported in IFC+SG format. This ensures consistent structure, naming conventions, and data formatting across disciplines.
2. Coordinated BIM Model
Architectural, structural, and MEP models must be coordinated before submission. Clashes and coordination conflicts should be resolved during design development, not during regulatory review.
3. Required BIM Deliverables
• Architectural BIM model (spatial layout, building elements, compliance zones)
• Structural BIM model (structural framing, load-bearing elements)
• MEP BIM model (mechanical, electrical, plumbing systems)
4. Model Information and Parameters
BIM elements must include required parameters as defined in BCA’s BIM Guide and IFC+SG specification. Missing or incorrectly structured data can delay approval.
5. Template Compliance
BCA provides baseline templates and guidelines for IFC+SG preparation. Using these templates ensures submission readiness and reduces validation errors.
Beyond+ helps teams prepare submission-ready BIM models that meet CORENET X requirements and regulatory approval standards. Explore our BIM Coordination services.
The CORENET X Submission Process: How It Works
Submitting BIM models via CORENET X follows a structured workflow:
Step 1: Prepare Your BIM Model
Ensure your architectural, structural, and MEP models are coordinated, clash-free, and aligned with IFC+SG specifications.
Step 2: Export to IFC+SG Format
Export your models using BCA-approved export settings. Incorrect export parameters can result in file rejection or data loss.
Step 3: Validate CORENET X Ready Compliance
Before submission, validate that your model meets CORENET X Ready criteria. This includes checking spatial structure, element classification, and required parameters.
Step 4: Upload via the CORENET X Portal
Qualified Persons log into CORENET X and upload the validated IFC+SG files. The portal provides upload status and initial validation feedback.
Step 5: Automated Compliance Checking
CORENET X performs automated compliance checks for certain building code requirements. Non-compliant elements are flagged for review.
Step 6: Regulatory Approval
BCA, SCDF, and PUB review the submitted models. Approval timelines depend on project complexity, completeness of submission, and coordination quality.
Where teams struggle:
• Ensuring all disciplines follow consistent IFC+SG export settings
• Coordinating model updates during submission review cycles
• Resolving validation errors without clear technical guidance
Beyond+ provides submission support that reduces validation errors and improves approval readiness. Contact us to discuss your submission timeline.
How to Make Your BIM Model CORENET X Ready
CORENET X readiness requires more than just creating a BIM model. The model must be structured, coordinated, and formatted in a way that supports automated review and regulatory approval.
Key preparation steps:
1. Use BCA’s BIM Guide and Templates
BCA provides reference templates, export guidelines, and parameter requirements. Following these reduces submission errors.
2. Ensure IFC+SG Specification Compliance
IFC+SG defines how building elements are classified, named, and structured. Incorrect classification can cause submission rejection.
3. Coordinate Across Disciplines
Architectural, structural, and MEP models must be spatially aligned and clash-free. Coordination conflicts discovered during regulatory review delay approval.
4. Validate Model Structure Before Export
Check spatial hierarchy, element classification, and parameter completeness before exporting to IFC. Fixing these issues in native software (Revit, ArchiCAD) is faster than troubleshooting IFC validation errors.
5. Test Export Settings
Export a sample IFC+SG file and validate it using BCA-approved tools. Incorrect export settings can strip required information from the model.
Beyond+ supports teams in preparing CORENET X-ready models through coordination, validation, and export preparation. Learn more about our BIM Services.
Common CORENET X Submission Challenges (And How to Avoid Them)
Challenge 1: Coordination Issues Across Disciplines
When architectural, structural, and MEP models are not properly coordinated, clashes appear during submission review. This extends approval timelines and requires model rework.
Solution: Implement structured clash detection workflows before submission. Beyond+ provides clash detection support that identifies coordination conflicts early.
Challenge 2: IFC Export Errors
Many teams struggle with IFC export settings. Missing elements, incorrect spatial structure, or stripped parameters are common issues.
Solution: Use validated export templates and test exports before final submission.
Challenge 3: Missing or Incomplete BIM Data
Regulatory review requires specific parameters and information fields. Missing data results in validation failures.
Solution: Audit model information against IFC+SG requirements before export.
Challenge 4: Understanding Regulatory Feedback
When CORENET X flags compliance issues, teams often struggle to interpret validation errors and identify corrective actions.
Solution: Work with BIM consultants who understand both technical model requirements and regulatory expectations.
BIM Implementation, Execution, and ISO 19650 Alignment
Singapore’s BIM submission requirements align with ISO 19650 principles for information management. Understanding this connection helps teams build stronger workflows.
ISO 19650 defines:
• How information is structured and named
• How models are coordinated and reviewed
• How delivery responsibility is allocated across project stages
CORENET X submission benefits from ISO 19650 workflows:
• Clearer information structure reduces submission errors
• Coordinated delivery schedules improve regulatory approval timelines
• Standardized naming and classification align with IFC+SG requirements
For new projects implementing BIM progressively, strong execution planning and BIM coordinators play a critical role in ensuring compliance with Singapore authorities’ requirements.
Beyond+ provides ISO 19650 consultancy that supports both internal workflows and regulatory submission readiness. Explore our ISO 19650 services.
Beyond Regulatory Approval: BIM Across the Building Lifecycle
BIM submission is not the end goal. The same models submitted to CORENET X should support downstream project delivery, including:
Construction Coordination
The coordinated BIM model used for submission becomes the baseline for construction coordination and clash resolution on site.
As-Built Documentation
Submission models evolve into as-built models, supporting handover and facilities management.
Asset Management and Lifecycle Use
When structured correctly, submission models can be repurposed for 6D BIM, COBie, and digital twin workflows across the built environment sector.
This is why submission readiness is not just about regulatory compliance. It is about building digital information that remains useful beyond approval and supports seamless collaboration across project touchpoints.
Beyond+ supports digital delivery workflows that extend beyond submission into construction, handover, and lifecycle use. Learn more about our As-Built / COBie services.
Make CORENET X Submission Clearer
Regulatory approval timelines depend on submission readiness. Beyond+ helps project teams prepare coordinated, validated, CORENET X-ready BIM models that meet Singapore authority requirements.
Our CORENET X support includes:
• IFC+SG export validation and troubleshooting
• Model coordination and clash resolution
• Submission timeline planning
• Regulatory feedback interpretation
Talk to Beyond+ about your submission needs or send us your models for review.
Need Professional CORENET X Support?
Beyond+ provides comprehensive CORENET X submission services including IFC+SG validation, model preparation, coordination support, and BCA compliance guidance for Singapore projects.
Frequently Asked Questions
Q: When does BIM submission via CORENET X become mandatory?
A: From 1 October 2025 for new projects of 30,000 sqm gross floor area and above, extending to all new projects by October 2026.
Q: What agencies require BIM submission via CORENET X?
A: Building and Construction Authority (BCA), Singapore Civil Defence Force (SCDF), and Public Utilities Board (PUB).
Q: What format must BIM models be submitted in?
A: IFC+SG, Singapore’s regulatory-approved IFC specification.
Q: Who is responsible for CORENET X submission?
A: Qualified Persons (QPs), typically architects and engineers engaged for regulatory approval.
Q: Where can I find BIM submission templates?
A: BCA provides templates, guidelines, and IFC+SG export specifications via the CORENET X portal and BCA’s official BIM Guide documentation.
Q: What happens if my model fails CORENET X validation?
A: Validation errors must be resolved and the model resubmitted. This can extend approval timelines and delay building works.
Q: Can Beyond+ help with CORENET X submission preparation?
A: Yes. Beyond+ provides model validation, IFC+SG export preparation, coordination support, and submission readiness services. Our team works with qualified persons, consultants, and contractors to ensure models are CORENET X ready before submission to regulatory authorities.
Q: What training courses are available for CORENET X submission?
A: Beyond+ offers corporate BIM training and project coaching focused on CORENET X submission workflows, IFC+SG export preparation, and regulatory compliance. Training can be customized for qualified persons, BIM coordinators, and industry professionals.
Conclusion
CORENET X BIM submission represents a significant shift in how building works are approved in Singapore. For project teams, understanding IFC+SG requirements, coordinating models effectively, and ensuring submission readiness are now essential capabilities.
The October 2025 implementation deadline is approaching. Teams that begin preparing now—by improving coordination workflows, validating export settings, and understanding regulatory requirements—will move through the approval process with greater clarity and confidence.
Beyond+ helps project teams navigate Singapore’s BIM submission requirements through practical, delivery-focused support. Whether you need model validation, coordination improvement, or submission timeline planning, we work alongside your team to ensure regulatory approval becomes clearer, faster, and more predictable.
Contact Beyond+ to discuss your CORENET X submission needs.
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Beyond+ Pte Ltd | BIM Services Singapore
33 Ubi Ave 3, Vertex Tower B, #04-28, Singapore 408868
Tel: +65 9026 1799 | beyondplus.sg
© 2026 Beyond+ Pte Ltd. All rights reserved.
For the current mandate position, see CORENET X from 1 October 2026: the 5,000m² threshold explained, and for how submissions are structured, the CORENET X Code of Practice.
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