Temporary Occupation Permit and CSC in Singapore

A Certificate of Statutory Completion is the Commissioner of Building Control's certificate that a development has complied with all statutory requirements and obtained all agency clearances. You may not occupy a building where building works have been carried out without one, or without a Temporary Occupation Permit.

The governing provision is section 12 of the Building Control Act 1989, and the mechanics are in Part V of the Building Control Regulations 2003 (reg 42 for the CSC, reg 43 for the TOP, reg 44 for separating a part-occupied building). Occupying, or permitting or causing to be occupied, a building where building works have been carried out without a CSC and not covered by a TOP carries a fine of up to S$20,000 or imprisonment of up to 6 months or both, plus up to S$1,000 for each day of continuing contravention, and up to S$2,000 a day if it continues after conviction (s.12(6)).

TOP does not always come before CSC

This is the single most commonly repeated error about the Certificate of Statutory Completion in Singapore. Regulation 42(1) reads: "On completion of any building works, the developer of the building works shall apply to the Commissioner of Building Control for: (a) a certificate of statutory completion; or (b) a temporary occupation permit."

They are alternatives, not a sequence. A clean project goes straight to CSC. A TOP is what you apply for when minor items remain outstanding and you need to occupy anyway. Plenty of published guidance describes TOP as a mandatory first step; the Regulations do not.

What a Temporary Occupation Permit actually is

Section 12(2)(b) carves occupation under a TOP out of the section 12(1) prohibition, so a TOP is what makes lawful occupation possible before completion is certified. Section 12(3) lets the Commissioner grant it subject to written directions, which may limit the period for which it is granted, require work or alteration to be carried out to his satisfaction, and set a period for completing that work. Section 12(5) lets him amend, suspend, or on failure to comply with a written direction, revoke it.

And section 12(4) is the line worth pinning above the desk: "A temporary occupation permit is only prima facie evidence that a building is suitable for occupation and is not to be taken to be evidence of compliance with the provisions of this Act, the building regulations or any other written law."

Where a TOP is granted for part of a building, reg 44 requires the person for whom it is granted to ensure the occupiable part is separated from the rest with proper hoardings or other barriers.

The real difference between the two

BCA's own summary is that a CSC is issued when a development has complied with all relevant statutory requirements and obtained all necessary agency clearances, while a TOP is issued when a development has fulfilled the necessary requirements and obtained clearances to be deemed suitable for occupation but has outstanding issues with other technical agencies.

The statutory mechanics are sharper. Under reg 43(1), a CSC shall not be issued where:

• there are requirements still to be complied with under the Act or the Regulations;
• written directions or requirements shown or endorsed on the plans have not been fully complied with;
• there are departures or deviations from any approved or deemed approved plans of building works; or
• the building works have not been fully completed.

Reg 43(2) then gives the escape valve: notwithstanding reg 43(1), the Commissioner may grant a TOP if he is satisfied that "the non-compliance, deviation or non-completion of the building works is neither of a serious nature nor in any way detrimental to the well-being or safety of the persons who may occupy the building".

Note the third limb of reg 43(1): departures or deviations from the approved plans block a CSC. Finding them late is expensive. Comparing as-existing geometry against the approved plans before the application is the cheapest version of that discovery, and it is one of the honest uses of as-built documentation.

Who applies

There is a two-layer answer. The Regulations put the duty on the developer: reg 42(1) says the developer of the building works shall apply. BCA's operational rule is that applications must be made by the project's Qualified Person appointed by the developer, submitted through CORENET.

CORENET X splits the submissions by discipline. The QP (Architect) submits the TOP or CSC application, requests the site inspection and submits the Technical Clearance. The QP (Electrical) submits the Certificate of Supervision for the lightning protection system, and the QP (Mechanical) the equivalent for ACMV systems. Certificates of Supervision for civil defence shelters come from the structural, architectural, mechanical and electrical QPs. The Technical Controller submits the Builder's Certificate of Completion of the Building Works.

What must be submitted

Reg 42(2) sets the conditions for a CSC and reg 43(3) for a TOP. The document set is nearly identical. Both require the reports and certificates under reg 23, the builder's certificate under BC Act s.11(1)(f), the licensed specialist builder's certificate where specialist building works are involved, the record plans, the applicable agency clearances, and any other certificate or document the Commissioner requires.

The record plans limb is worded identically in both: "the record plans of the detailed structural plans, design calculations and building plans incorporating all the departures or deviations from the approved or deemed approved structural plans, design calculations and building plans have been submitted to the Commissioner of Building Control".

What a CSC additionally requires is reg 42(2)(a), (d) and (e), that the building works have actually been completed in accordance with the Act and Regulations, that all written directions given under s.5(3)(b) have been complied with, and that all requirements shown or endorsed on the approved plans have been complied with. The dividing line is compliance and completion, not paperwork.

Record plans are not as-built plans

The Building Control Regulations do not use "as-built plans" for the main structural and architectural submission. The statutory term is record plan, defined at reg 2 as "a plan showing the immaterial changes made to the building works of the approved plan or deemed approved plan". The structural submission is the Certificate of Record Structural Plans/Calculations, Form BCA-BE-CTASST, previously BEV C3, lodged by the QP (Design).

"As-built" does appear in BCA's document list, but only for the lightning protection system plans, the as-built Buildability or Constructability score, and the as-built Green Mark score.

There is one place where surveyed as-built plans are expressly contemplated in statute, and it sits immediately before the TOP or CSC gate. Planning Act 1998 s.20A empowers the competent authority, for development or works within a conservation area, to require the developer to submit as-built plans prepared by a land surveyor together with a declaration by that land surveyor. Under s.20A(2) that power applies at any time after commencement of the development but before BCA grants a TOP or a CSC, whichever is earlier.

Two things follow, and they matter. First, there is no requirement anywhere in reg 42, reg 43 or BCA's published TOP/CSC document list for a Registered Surveyor's certificate or an SLA Certified Plan. Third-party claims to the contrary are wrong. Second, a scan is not an as-built plan for Planning Act s.20A purposes unless a land surveyor prepares the plans and makes the declaration.

The closest thing to a survey requirement is a URA one, and it is a QP declaration. Under URA Circular DC17-05, for non-conserved buildings the QP must declare to URA that the development has been built in accordance with the approved plans before applying to BCA for the TOP. The declaration covers nine parameters including building footprint, setbacks, height and floor count, with a 3% construction tolerance for minor deviations. On surveyors, the circular says only that "surveyed drawings of as-built structures may be provided in supporting the declaration by QP". Optional supporting evidence, in other words, and a genuinely useful thing for a QP to hold.

Agency clearances

The authoritative list is reg 42(2)(fa), applied to a CSC directly and to a TOP through reg 43(3)(ca).

BCA's operational list adds items not named in reg 42(2)(fa) and splits LTA into road and transport, vehicle parking, EV charging and MRT corridor clearances, and adds EMA for residential developments of 10 units or more and a Fibre Readiness Certificate.

Fire safety: three instruments, not one

Under Fire Safety Act 1993 s.60(1), any person for whom fire safety works have been carried out and completed must apply to the Commissioner and obtain a Fire Safety Certificate. The Commissioner may instead issue a temporary fire permit with a written direction to comply within a specified period; if the direction is not met in time the application is deemed withdrawn (s.60(3), s.60(4)). Where the application is accompanied by a registered inspector's certificate that the works accord with the approved plans, the Fire Code and the Act, the Commissioner may issue the certificate or permit without inspecting the works (s.60(5)).

Do not confuse the Fire Safety Certificate with the Fire Certificate. The Fire Certificate is a different instrument under s.35, applies only to buildings or classes of buildings the Minister designates by Gazette notification, and is a recurring occupancy certificate rather than a completion clearance.

Inspections, service standards and fees

BCA offers three inspection modes: a Standard Inspection on site; an Express Inspection arranged within the next 4 days depending on project size, for a fee of S$3,000; and a Virtual Inspection using 360-degree capture, with BCA comments within 3 working days. For all three, the QP submits the Certificate of Supervision of Building Works and the Declaration by QP not less than 3 days before the inspection date, and the inspection must have been carried out within 3 months of the TOP application date.

On timing, BCA states that a TOP is issued within 7 working days of complete documents, an Express TOP within 1 working day of complete documents and receipt of payment, and a CSC within 7 working days, longer where more extensive evaluation is needed, for example a high number of unresolved defects. Expedited processing of a TOP application costs S$500 where the building works are up to 3,000 m² and S$1,000 where they exceed it.

Full form names and the current document list are on BCA's TOP and CSC application page.

The two year expectation between TOP and CSC

There is no fixed statutory validity period for a TOP. Section 12(3)(a) gives the Commissioner a discretion to limit the period by written direction, and nothing in the Act or in regs 42 to 44 prescribes a number of months or years. Treat any published figure with suspicion.

What does exist, per BCA and Inter-Agency Coordinating Committee guidance issued September 2022, is a two year expectation applying to projects with a TOP or PUB Clearance Certificate issued on or after 1 January 2023. The developer must ensure the CSC clearances from URA, NParks, LTA, NEA and BCA and the Fire Safety Certificate from SCDF are obtained within two years from the date of the TOP; that the PUB compliance certificates for drainage and sanitary or sewerage works are obtained within two years of the respective PUB clearance certificates; and that where TOP was issued in stages, the two years runs from the date of the latest TOP. Where the QP cannot comply, the QP must provide a list of the requirements not complied with and a schedule of timelines for each.

After the CSC: the project is closed

BCA has put this plainly: amendment or record plans may be submitted as long as the CSC has not been issued. "Once the CSC is issued, the project is closed and no further submissions will be accepted. For significant building works carried out after the CSC has been issued, an Addition and Alteration (A&A) submission must be made prior to the commencement of any building works."

That date also starts two other clocks. The age of a building for periodic inspection is counted from the last TOP for the whole building, or where none was granted, the last CSC. It is what determines when a Periodic Structural Inspection and a Periodic Facade Inspection fall due.

Retrieving the records for an older building

Four routes, all primary, and one dead end to avoid.

• BC Regs reg 49, approved drawings. On an application accompanied by a fee of S$45, the Commissioner may allow the owner or the owner's authorised agent to search and inspect the approved or deemed approved drawings retained by the Commissioner. A copy costs a further S$65 for each set uniquely identified by a reference number.
• BC Regs reg 49A, building information. On an application with a fee of S$45, the Commissioner may provide the date of issuance of the CSC or, where there are no records of that date, the date of issuance of the TOP; or the name of the qualified person appointed to prepare the plans. Note the drafting: the Regulations themselves contemplate that no CSC date may be on record.
• BCA Plan Purchase. The same fees apply through BCA's plan purchase service, with BCA contacting the applicant on availability within 10 working days.
• Legal requisition via InteReq. Returns the status of the latest CSC, TOP or Building Plan Approval for the property, plus whether enforcement orders under the Building Control Act remain active, outstanding expenses owed to the Commissioner, active notices under building maintenance legislation, and active directions under strata management regulations. The fee is S$37 inclusive of GST per property.

The dead end: BCA's E-Enquiry service for public enquiries on Approved Plans and Permits, and Status of Plan Applications, was discontinued on 18 December 2025. The information remains accessible to applicants through CORENET 2 and CORENET X.

One more point for pre-1989 buildings. Section 53 of the Building Control Act treats a valid and subsisting certificate of fitness for occupation as having the same force and effect as a CSC, and a temporary occupation licence as having the same effect as a TOP. An owner holding one of those is not missing a CSC.

When BCA's search comes back empty, measurement is the only remaining route to a usable document set. That is the situation described in what to do when the floor plan is missing or wrong.

What a scan can and cannot do

Stated precisely, because this audience will check it.

It can:

• Record the geometry and visible condition of a building at a specific date, to a stated accuracy, with full coverage of what is visible from the survey positions.
• Produce elevation drawings, floor plans, sections and reflected ceiling plans of an existing building where none exist or where the existing ones are unreliable.
• Support a comparison between as-built condition and approved plans, which BCA itself recommends owners and prospective buyers carry out.
• Supply the geometric basis from which a Professional Engineer may reconstruct structural plans, which the Building Control (Periodic Inspection of Buildings and Building Façades) Regulations 2021 expressly contemplate at reg 6(4)(b)(ii) for buildings and reg 15(6)(b)(i)(B) for facades.

It cannot:

• Produce a CSC or a TOP, or substitute for any QP or builder certificate. Nor does it establish compliance: reg 42(2)(a), (d) and (e) are about legal compliance and completion, not geometry.
• Be a statutory inspection. Periodic Structural Inspection is a Professional Engineer's personal act, and BCA said in March 2026 that the engineer must be physically present. Periodic Facade Inspection is a competent person's personal act under reg 16(1).
• Determine structural capacity, reinforcement, concrete grade, connection condition or load path.
• Detect concealed defects. Surface capture records the finish, not the structure or the fixings behind it.
• Be a building plan, a record plan, a schedule of dilapidations, a strata title plan, a valuation, or an as-built plan under Planning Act s.20A. Each of those has a defined author: a Qualified Person, a QP (Design), a building surveyor exercising professional judgement, the Chief Surveyor, a valuer, or a land surveyor respectively.
• Regularise unauthorised works, satisfy a developer's handover obligation, or discharge any statutory duty.

Measured documentation is the input that lets the professional do their statutory job properly, and the evidence that survives a dispute. If your approved plans and your building have drifted apart, tell us the address and what you are trying to close out, and we will scope the record you need.