Permit to Commence Structural Works in Singapore: A Guide

In Singapore, a permit to commence works is the Building and Construction Authority (BCA) permit for structural works. It is issued after the structural plans are approved, and it is required before any structural works can start on site. The application is made jointly by the developer, the builder and the Qualified Person (QP) through CORENET e-Submission. This guide explains how the permit differs from plan approval, who signs, what must be submitted, how long BCA takes, and where other authorities still apply.

TL;DR

• Plan approval and the permit to commence are two separate steps: approved structural plans do not by themselves authorize work to begin.
• The developer, the licensed builder and the QP apply jointly through CORENET e-Submission, and the permit application may be filed together with the structural plan application or after approval.
• BCA publishes a processing time of 7 days for a permit to carry out structural works.
• Minor works listed as insignificant building works are exempt from plan submission, but exemption does not remove the need for clearances from other authorities such as URA.
• The QP carries primary responsibility for the procedure, so the appointment should be settled before design begins.

Table of Contents

• What the permit to commence works means
• Plan approval and permit: the difference
• Who applies and who is responsible
• Prerequisites before you apply
• Documents and particulars required
• How the application works, step by step
• Processing time and planning the start date
• Works that do not need approval
• Other authorities still apply
• Common causes of delay
• Perspective
• Support from Stellar Structures
• FAQ
• Sources

What the permit to commence works means

The phrase “permit to commence works” is used loosely in Singapore. Owners and contractors may also say “permit to work”, “ST permit” or “structural permit”. In regulatory terms, it refers to the permit BCA issues under the Building Control Act for structural works. BCA states that once the structural plan is approved, a permit is required before the structural works can start.

The permit is therefore a gate between design approval and construction. Approval confirms that the proposed structural design meets the Building Control Regulations. The permit confirms that the identified parties, namely the developer, the builder and the QP, have accepted their roles for the execution of those works and have declared when the works will begin.

For a step-by-step view of this stage, our own guide to the BCA permit to commence structural works (ST permit) follows the same sequence in more operational detail.

Plan approval and permit: the difference

Confusion between the two stages is a common cause of schedule disruption, since site teams sometimes assume that an approval letter allows mobilization. The table below summarizes the distinction.

The sequencing is flexible in one respect. BCA allows permit applications to be submitted at the same time as structural plan approval applications or after the plans have been approved. Filing in parallel can shorten the pre-construction period, provided the builder has already been appointed.

For background on the earlier stage, see our guide to the BCA structural plan approval process for contractors and the overview of building plan submission requirements in Singapore.

Who applies and who is responsible

The Building Control Act 1989 sets out the parties. As summarized from the statute, an application for a structural works permit is submitted jointly by the developer, the builder (a licensed general or specialist builder) and the QP appointed to supervise the works. Each party has a distinct role:

• Developer or owner: signs the notification of the intended start date and appoints the QP and, where applicable, the geotechnical engineer.
• Builder: a licensed general or specialist builder who signs the acceptance and undertaking for the works.
• Qualified Person: an Architect or Professional Engineer who confirms the appointment and provides the particulars of the site supervisor.

BCA advises that the QP bears the primary responsibility for navigating the procedural requirements, securing structural plan approval and ensuring a permit is obtained before construction begins. Owners who are not familiar with the process should read our explanation of what a Qualified Person is for building works and why every structural work requires a QP.

Prerequisites before you apply

Before the permit stage is reached, several conditions must already be met. Per BCA’s building plan submission guidance, prerequisites include obtaining written permission from URA and appointing a QP registered as an Architect or Professional Engineer. Building plan approval, a prerequisite to starting works, must be obtained through a QP registered with the Board of Architects or the Professional Engineers Board.

In practice, the checklist before a permit application is filed is as follows:

1. The QP is appointed and registered with the relevant professional board.
2. Planning permission or written permission from URA is in place where the works require it.
3. The structural plans are approved, or the plan application is being filed concurrently.
4. A licensed builder has been engaged and has agreed to the undertaking.
5. A geotechnical engineer is appointed where the works involve excavation, piling or retaining systems that call for one.

Projects that involve excavation or ground-sensitive structures benefit from early coordination between the structural and geotechnical disciplines. Our note on structural versus geotechnical engineering explains where the scopes divide.

Documents and particulars required

BCA states that applicants must submit form BCA-BE-Permit (BEV/B1) and relevant appendices as required, through CORENET e-Submission. The Act sets out the content of the application. It must include a developer-signed start-date notification, particulars of the QP and, if applicable, the geotechnical engineer, a builder-signed acceptance and undertaking, and a QP-signed appointment confirmation with site-supervisor particulars.

A practical document pack therefore contains:

• the completed permit form and applicable appendices;
• the intended start date, signed by the developer;
• QP particulars and, where relevant, geotechnical engineer particulars;
• the builder’s signed acceptance and undertaking;
• the QP’s signed appointment confirmation and the particulars of the site supervisor.

Inconsistencies between these items, for example a start date that does not match the builder’s mobilization programme, or supervisor particulars that are incomplete, are avoidable causes of resubmission. Our checklist on how to submit BCA plans without delays covers the same discipline for the plan stage.

How the application works, step by step

1. Confirm plan status. Verify that the structural plan is approved, or decide to file the permit together with the plan application.
2. Align the parties. Obtain the developer’s start-date notification and the builder’s acceptance and undertaking, and confirm the site supervisor’s details with the QP.
3. Prepare the submission. The QP assembles form BEV/B1 and the appendices that apply to the works.
4. Submit through CORENET e-Submission. The three parties apply jointly through the system.
5. Respond to clarifications. Any query from BCA is answered through the QP.
6. Receive the permit and commence. Structural works start only after the permit is issued.

For large projects the platform is changing. As of 1 October 2025, BCA requires all new projects with a Gross Floor Area of 30,000 sqm or more to submit building plans through the CORENET X system. Smaller projects should confirm on BCA’s pages which channel currently applies to them.

Processing time and planning the start date

The published processing time for a permit to carry out structural works is 7 days. That figure applies to the permit itself and not to the preceding plan approval, which usually takes considerably longer. Project programmes should treat the two durations separately. Our article on the BCA approval timeline sets out realistic planning allowances for the plan stage of routine works.

Three scheduling points follow from the process:

• File the permit application early enough that the declared start date does not pass while the application is pending.
• Do not mobilize structural trades on the basis of plan approval alone.
• Keep the builder’s programme and the start date in the application consistent.

Continuity matters after the permit is issued as well. Under the Building Control Act, the Commissioner of Building Control may revoke a permit if structural works are suspended for a continuous period exceeding 3 months. Projects with an uncertain financing or procurement position should take this into account before committing to a start date.

Works that do not need approval

Not every alteration triggers the permit process. BCA recognizes that some minor, insignificant building works are exempt from the plan submission requirement, and owners are directed to the First Schedule of Insignificant Building Works for the current list. The exemption is narrow and depends on the exact nature of the works, not on how small the job appears.

The practical test is whether the works affect the structure. Hacking or removing a wall, enlarging an opening or adding loads to a slab requires a structural assessment before any decision about exemption can be made. Identifying which walls are load-bearing is a necessary first step; a technical explainer on how to identify load-bearing walls in Revit shows how design teams model and verify that distinction in drawings. Where interior alterations are involved, our article on whether interior works need BCA approval discusses the usual boundary.

Other authorities still apply

BCA’s own guidance is explicit that an exemption does not close every obligation. Owners must check whether clearances from other relevant authorities, such as URA, are required, and comply with applicable laws, safety requirements and good practices. Equally, a BCA permit does not substitute for those clearances.

The approvals that commonly run alongside the structural permit are:

Public sector projects can follow a different logic. URA’s REALIS data dictionary notes that, where a BCA permit might not be required, construction is deemed to have commenced when the first tender is invited or the contract is awarded. That definition is statistical, used for property data, and does not change the legal requirement for a permit where one applies.

Common causes of delay

The following issues recur in structural permit applications and are all within the applicant’s control:

• Late appointment of the builder. The permit cannot be completed without the builder’s undertaking, so a pending tender holds up the permit.
• Mismatched particulars. Names, registration details or supervisor information that differ between forms prompt clarification rounds.
• Unclear scope. Works that begin as non-structural and later involve structural changes require a fresh assessment.
• Neglected parallel approvals. A permit in hand with no URA or SCDF clearance still leaves the project unable to proceed lawfully.
• Treating the start date as flexible. A start date that slips well beyond the declared date calls for a conversation with the QP.

Our wider overview of BCA compliance for Singapore property projects and the complete guide to BCA building regulations and hiring Qualified Persons place the permit in the full project lifecycle.

Perspective

Our experience of structural submissions in Singapore is that the permit is rarely the difficult step. It is the step at which earlier weaknesses become visible. A start date declared before the builder is confirmed, a QP appointed after the design has been fixed, or a URA clearance assumed rather than verified will each surface when the three signatories sit down to complete the application.

For that reason, we treat the permit as part of a single, coordinated submission strategy and not as a clerical follow-on to plan approval. The QP, the geotechnical engineer where one is needed, the builder and the owner are aligned on scope, sequence and start date before any form is filed, and every statutory board whose clearance bears on the project is identified at the outset.

Owners, developers and contractors who engage a Professional Engineer early are generally better placed to file the plan application and the permit application concurrently, which is the route BCA permits and which removes an avoidable interval from the programme. Our team handles BCA, URA, HDB, JTC, SCDF, PUB, LTA, NEA and NParks submissions together, so that the conditions of one authority do not contradict the filing made to another.

Aman

Support from Stellar Structures

Stellar Structures is a Singapore design and engineering firm that prepares structural and geotechnical designs, acts on authority submissions to BCA, URA, HDB, JTC, SCDF, PUB, LTA, NEA and NParks, and carries out periodic structural and façade inspections. Owners, developers, contractors and architects can brief us on a project at any stage, from the first feasibility question to the coordination of the permit application. The full list of services is on our services page, and enquiries can be made through our main site.

Buildings that are already in operation carry their own recurring obligations, including the BCA periodic structural inspection and the periodic façade inspection.

FAQ

Is a permit to commence works the same as building plan approval?

No. Plan approval confirms that the proposed design complies with the regulations, while the permit authorizes the structural works to start. BCA states that a permit is required after the structural plan is approved and before structural works can start.

Who has to sign the application?

The developer, the licensed builder and the QP apply jointly. Each provides specific declarations: the developer the start-date notification, the builder the acceptance and undertaking, and the QP the appointment confirmation and site-supervisor particulars, as set out in the Building Control Act.

How long does BCA take to issue the permit?

BCA publishes a processing time of 7 days for a permit to carry out structural works. This excludes the time needed for structural plan approval, so the two should be planned separately.

Can the permit be applied for before the plans are approved?

Yes. BCA allows the structural permit application to be submitted at the same time as the structural plan application or after the plans are approved. Works cannot start until both the approval and the permit are in place.

Do minor renovations need the permit?

Insignificant building works listed by BCA are exempt from plan submission, but any work that affects structural elements should be assessed by a QP first. Clearances from other authorities, such as URA, may still be required.

Sources

• Permit for structural works, Building and Construction Authority
• Building Plan submission, Building and Construction Authority
• Guidelines for ST Plan Applications, Building and Construction Authority
• Building works not requiring approval, Building and Construction Authority
• Building Control Act 1989, Singapore Statutes Online
• Data Dictionary, REALIS, Urban Redevelopment Authority
• Revit Load-Bearing Walls: Identify, Create, and Manage

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• Engineer’s Checklist to Pass LTA for Street Works Permits in Singapore
• Temporary Works Design in Singapore: Mastering Safety