Introduction
In Singapore’s highly regulated construction and engineering landscape, PE Endorsement is a mandatory requirement for many types of building works and authority submissions. Yet, it’s common for contractors, developers, and even architects to ask:
“When exactly do I need a PE Endorsement?”
Failing to secure the right PE endorsement can result in rejected submissions, costly delays, and even potential regulatory penalties. This guide will clarify the key situations where Professional Engineer (PE) Endorsement is required under Singapore law and regulations.
What is PE Endorsement?

PE Endorsement refers to the official sign-off by a licensed Professional Engineer (PE) in Singapore, registered under the Professional Engineers Board (PEB). When a PE endorses your structural, mechanical, or electrical drawings or calculations, it serves as a declaration that your design complies with statutory codes, industry standards, and safety requirements.
Without this endorsement, regulatory authorities such as BCA, SCDF, PUB, NEA, and URA may reject your submissions.
Common Scenarios When PE Endorsement is Required in Singapore
1️⃣ Structural Works
For any works that affect the structural integrity of a building, PE Endorsement is mandatory. This includes:
- New building constructions
- Alterations to structural elements (e.g., beams, columns, slabs)
- Strengthening works
- Re-roofing or additional floors
- Structural retrofitting for load-bearing changes
Authorities: BCA Structural Plan (ST) Submissions
2️⃣ Temporary Works
Temporary structures used during construction require PE Endorsement to ensure safety and compliance:
- Scaffolding
- Earth-retaining structures (ERSS)
- Temporary decking or platforms
- Hoardings
- Excavation support systems
Authorities: BCA Permit to Commence Works (PTCW)
3️⃣ Mechanical & Electrical (M&E) Systems
Certain M&E works also require PE Endorsement, especially where safety or regulatory compliance is involved:
- Air-conditioning and mechanical ventilation (ACMV)
- Fire protection systems (sprinklers, hydrants, smoke control)
- Lift and escalator systems
- Electrical systems exceeding statutory thresholds
Authorities: BCA, SCDF, EMA, PUB, NEA
4️⃣ Fire Safety Compliance
If your project affects fire safety provisions or requires SCDF approval, PE Endorsement is mandatory. This includes:
- Changes to escape routes or fire compartmentation
- Installation or alteration of fire safety systems
- Fire protection equipment and systems
Authorities: SCDF Fire Safety Plan Submissions (FSC)
5️⃣ Drainage, Sewerage, and Pollution Control
Projects impacting drainage systems, water supply, sewerage, or pollution control measures will require PE Endorsement for authority submissions:
- Sanitary plumbing
- Drainage systems
- Water supply infrastructure
- Environmental health controls
Authorities: PUB, NEA
Why PE Endorsement is Non-Negotiable
✅ Regulatory Requirement
Singapore’s laws mandate PE endorsement for safety and compliance. Submissions without it will be rejected.
✅ Safety and Accountability
A PE’s endorsement confirms the design is safe for public use, reducing liability for developers, owners, and contractors.
✅ Project Efficiency
Proper endorsement helps fast-track approval processes and minimizes costly rework due to compliance issues.
Does Every Project Need PE Endorsement?
Not all projects require PE Endorsement.
Minor A&A works like repainting, non-structural partitioning, or basic renovations may not need it. However, if your works involve structure, safety, or regulated systems, PE Endorsement is usually mandatory.
When in doubt, consult an experienced engineering consultancy.
How We Can Help
We specialize in providing PE Endorsement services for all types of construction and engineering projects in Singapore. Our team works closely with developers, contractors, and architects to ensure your submissions are compliant, complete, and approved without unnecessary delays.
Our services include:
- Structural PE Endorsement
- M&E PE Endorsement
- Fire Safety PE Endorsement
- Comprehensive Authority Submissions (BCA, SCDF, PUB, NEA, URA)
Conclusion
Understanding when PE Endorsement is required is key to smooth project execution and regulatory compliance in Singapore’s strict construction environment. Whether it’s for structural integrity, fire safety, or complex M&E systems, engaging the right PE at the right stage saves time, reduces risk, and ensures successful project delivery.
Need help? Contact us for a consultation on your upcoming project’s PE Endorsement requirements.