Site Supervisor requirements
Understand site supervision requirements for structural works in Singapore, including qualifications, accreditation, and BCA supervision standards.
Last updated 12 March 2026
To supervise the carrying out of structural works, site supervisor(s) are required to be appointed by the Qualified Person during the permit application.
All qualified site supervisors must be accredited with the Joint Accreditation Committee (JAC) of the Institution of Engineers Singapore (IES) and the Association of Consulting Engineers Singapore (ACES).
Type of site supervision required
The type of supervision and minimum number of supervisors required are shown below.
Immediate supervision of structural works in small-scale building works:
Information on immediate supervision of structural works in small-scale building works
Value of building works | Type of site supervisor |
|---|---|
Up to $7.5 million | Appropriate Qualified Person (QP) or resident engineer or resident technical officer |
Full-time supervision of structural works in large building works:
Information on full-time supervision of structural works in large building works
Value of building works | At all stages of a project except for stages (A), (B) and (C) | Stage (A) During piling & foundation works | Stage (B) After 80% completion of building works | Stage (C) During ancillary & external works# |
|---|---|---|---|---|
More than $7.5 million but not exceeding $15 million | 1 RTO | 1 RTO | 1 RTO | 1 RTO |
More than $15 million but not exceeding $30 million | 1 RE | 1 RE | 1 RE | 1 RTO |
More than $30 million but not exceeding $75 million | 1 RE + 1 RTO | 1 RE | 1 RE | 1 RTO |
More than $75 million but not exceeding $150 million | 1 RE + 2 RTO | 1 RE + 1 RTO | 1 RE + 1 RTO | 1 RTO |
More than $150 million | 2 RE + 3 RTO OR 1 RE + 5 RTO | 2 RE + 1 RTO OR 1 RE + 3 RTO | 1 RE + 1 RTO | 1 RTO |
Note:
"Value of building works" means:
For any underground building works, the total cost to be expended in carrying out those building works estimated at the time of application.
For other building works, the total cost to be expended in carrying out the building works (including the foundations, basements, structural frame, finishes and the installation of building services) estimated at the time of application.
RTO means "Resident Technical Officer"
RE means "Resident Engineer"# includes construction of any external cladding, safety barrier, covered walkway or detached single storey building.
For deployment of reduced site supervisor at different phases of construction, the QP shall notify BCA during permit application using form BCA-BE-PERMIT_A4.
Useful information and links
Framework for risk-based inspection
A proper assessment of the risk of building works will minimise potential safety gaps during construction.
What is risk-based inspection?
A risk-based inspection regime looks at the different risks of different type of building works and focuses on what and when to inspect for maximum effectiveness.
What are the requirements?
You or your project’s Qualified Person (QP) should refer to Annex 1 – Framework for Risk-based Inspection [PDF, 3 MB] to:
Check the risk classifications of building works
Determine your project’s risk level
Ensure supervision matches the level of risk