Design changes often occur during the design and construction phases. Depending on the extent of changes, amendment submissions may be required at the appropriate Gateways. Please refer to the following guide for more details on how to make an amendment plan submission on CORENET X.

Guide to Amendment Plan Submission on CORENET X

• Ensure all project members have set up Singpass for Business (Corppass) settings if they are representatives from an organization, including Corppass access to the CORENET X Submission Portal (https://portal.corenet.gov.sg/)
• The project team should collaborate and agree on roles and responsibilities of respective QPs required each project
• The Project Coordinator should support /  receive support  to/from the project team members and assistants for smooth onboarding of all submissions.
• Within each organization, ensure relevant IT and Finance colleagues are notified of the organization’s roles in the project, to avoid unnecessary delay to the rest of the project team during submission preparations.

Useful References

• All project team members should plan carefully on the types of submissions the project will undergo, and the timing, party / parties and format(s) involved in each submission
• There are Pre-Submissions (e.g. NParks EMMP, NEA NIA) that are to be submitted by email and not via CORENET X Submission Portal – read the Code of Practice carefully for more info.
• Projects requiring JTC Land Consent can apply via CORENET X.
• Projects are encouraged to carry out pre-consultations for household / storey / transit shelter compliance
• Project team members are encouraged to carry out pre-submission consultations as early as possible, to clarify or enquire on agency requirements, potential deviations.
• Do not forget to indicate your query in the CORENET X pre-consultation submission form. The more details and information you attach in the query, the more agencies can assist and expedite your query. 

• Discuss with the project team if there is a need to submit for Demolition before or after submitting for a Design Gateway or Direct Submission Process submission. (Note that there will be a difference in fees based on timing of demolition submission on CORENET X)
• If submitting prior to the Design Gateway or Direct Submission Process, the demolition submission will be a joint submission to BCA and URA.
• It is optional to submit in 3D. 

• If you are unable to find a particular agency’s form for your Design Gateway or Direct Submission Process, review the respective QP’s roles and responsibilities, and initiate Developer’s appointment for missing scopes to open the missing form.
• After you have indicated project information in the form inputs, the Submission Portal will show whether you can submit for Lodgement.
• Utilise the “Fee Computation” feature to double-check that Submission Portal inputs for submission requiring fee payments are correctly filled in
• Fees below $10,000 are encouraged to be paid via credit card
• There is no 72-hour deadline for payment of fees after submission. However, processing will only commence after relevant fee payments have been completed by the project team and verified by relevant agencies.
• Remember to indicate and check the last I/C and minimum platform levels in the Design Gateway IFC-SG models have been indicated and are accurate, double-checking that the levels are the same as indicated in the Submission Portal form
• Where applicable, project teams are encouraged to upload models early to utilize the “Preview Model” feature on the Submission Portal, to ensure models are geo-referenced and coordinated accurately prior to submission.
• It is not necessary to indicate “Magenta”, “Cyan” and “Yellow” colours to reflect “New”, “Existing”, and “Removed” elements in BIM models for A&A or Conservation projects. Instead, relevant IFC-SG parameters (e.g. Status parameter) should be populated for relevant elements accordingly.
• It is possible for larger projects (e.g. MRT Stations) to submit for both Design Gateway and DSP concurrently (e.g. Design Gateway for the Station Box and DSP for the Pedestrian Overhead Bridge)
• It is possible to submit for Demolition after the 1st Design Gateway or DSP Submission. Approval will only be granted after URA Lodgement or approval has been obtained.
• It is possible to submit for advance comments by respective agencies for Piling and/or Construction Gateway after the 1st Design Gateway Submission. Approval will only be granted after Design Gateway Approval has been obtained.

• Relevant agencies will provide Written Directions or Approvals after a Service Level Agreement of up to a maximum of 20 working days.
• For joint submissions, only agencies with WDs will issue responses – agencies who are ready to issue approval will not respond until the subsequent resubmission where all relevant agencies are agreeable to approve
• Written Directions for BIM submissions will also include a BIM Collaboration Format (BCF) zip files. Free BCF plugins and apps are available to view the BCF files in native BIM software.
• Do not upload outdated documents (including models and plans) into the resubmissions
• Fee top-ups (e.g. after wrong form inputs or change from lodgement to processed submission) can be made during re-submissions. 

• Joint Submission approvals consist of individual approval/clearance letters of relevant agency line departments.
• When a submission is ready for approval, agencies will generate digital checksums for approved documents requiring agency authentication (as a more secure replacement for agency watermarks)
• It is possible to make amendments for all approvals except Design Gateway. Immaterial changes to Design Gateway approved submissions may be submitted in the Construction Gateway. When in doubt, the project team should clarify with the relevant agency / agencies.
• Major changes to the Design Gateway approved submission will require a re-submission to the Design Gateway.
• After obtaining Design Gateway Approval, projects can start applying for IRAS Certificate of Numbering (In-Principle Approval) prior to Construction Gateway Approval. After obtaining the IPA, projects can also start applying for the BCA Subsidiary Strata Certificate (SSC) for advance comments.,   

• The Piling Gateway is an optional gateway for projects who require piling works to start earlier onsite prior to Construction Gateway submission
• It is possible to submit Piling Gateway and Construction Gateway concurrently.
• Piling Gateway submissions comprise of BCA (ST), and may be a joint submission with LTA (Rail) if applicable
• The project team, including the builder where applicable, should discuss early on how part-ST submissions should be carried out prior to pre-consultation with BCA
• Ensure the Accredited Checker (AC), PE (Geo), AC (Geo) are onboarded, appointed and aware of their roles in the projects, where applicable.
• Resident Engineers (REs) and Resident Technical Officers (RTOs) can be directly added by the C&S Engineer on the Submission Portal.  The Project Coordinator and Developer do not need to get involved in their additions.  

• Independent Submissions are technical submissions to one agency line department without affecting other agencies (e.g. ERSS works, Fire Protection/Mechanical Ventilation Plans)
• Waivers can be applied on the CORENET X Submission Portal.
• Independent Submissions can be submitted in the non-BIM format
• It is important to understand when and which Independent Submissions can be submitted for your project. Pls study the Code of Practice carefully, and clarify with agencies early if in doubt. Wrong assumptions of Independent Submissions and Waivers may lead to delays in the project timeline.

• Preparations for Construction Gateway should start as early as possible, due to the number of regulatory departments involved.
• The project team, including the builder where applicable, should discuss early on how part-ST submissions should be carried out prior to preconsultation with BCA
• Regardless of part-ST submissions, the first Construction Gateway submission must include full Architectural and M&E submission models, as well as the full C&S model “carcass” (geometrically accurate model without embedded IFC-SG data)
• Besides Construction Gateway requirements as stated in the Code of Practice, project teams must remember to incorporate Design Gateway Approval instructions and notes related to Construction Gateway submissions.
• External Works should be submitted together with the first Construction Gateway Submission, but the approvals for External Works will be delinked from the Construction Gateway Approval
• Formal approvals for IRAS Certificate of Numbering and BCA Share Value will take place after Construction Gateway Approval

• The Completion Gateway consists of a one-stop dashboard of the project’s status of TOP/CSC applications across various agencies shown on the CORENET X Submission Portal
• TOP submissions are to be made to respective agencies independently and concurrently, whenever ready.
• The final TOP/CSC will be issued when the project obtains all the necessary clearances of various agencies.
• If IFC models had been submitted earlier in CORENET X for the project, as-built submissions will consist of latest updated IFC models, with IFC-SG data updated upon the earlier approved models to respective agencies. 
• Verify the 2D and 3D documentation required for the Completion Gateway, especially if they are created by parties onboarded later in the project
• Note that there are submissions made to The PUB Business & Professional portal and LTA PROMPT service portal, such as the QECP Plan, submissions related to sewer corridor activities and road access opening submissions. 

A checksum is an alphanumeric value that uniquely represents the contents of a file. It is akin to the digital fingerprint of the file.

In the approval response, the QP will find a “List of Approved Plans” by each agency. The QR representation of the Approved Plan’s checksum will be listed in the “List of Approved Plans” (1 unique checksum per file).

To verify if a file is the Approved Plan, you can compare the checksum of the file with the checksum listed on the “List of Approved Plans”.

Verification with Netrust Digital Signer (NDS) [coming soon]

Verification without Netrust Digital Signer (NDS)