What Is TR 78 and Why It Matters
TR 78 is the technical reference published by BCA that establishes the methodology for using unmanned aircraft systems in building facade inspections across Singapore. Before TR 78, there was no standardised framework for drone-based facade assessment, creating uncertainty about whether drone data would be accepted for regulatory compliance.
TR 78 defines requirements across four areas: flight planning and execution, image capture standards, defect identification and classification, and report format. Any drone facade inspection following TR 78 methodology produces data that BCA recognises for periodic facade inspection submissions.
For building owners, MCSTs, and facility managers, TR 78 compliance means your drone inspection report can be endorsed by a Professional Engineer and submitted to BCA — the same as a traditional inspection, but completed faster and at lower cost.
TR 78 Requirements for Drone Facade Inspection
Flight Planning
Systematic flight paths covering all facade elevations with defined overlap. Pre-flight risk assessment and emergency procedures documented before every mission.
Image Resolution Standards
Minimum ground sampling distance (GSD) requirements ensuring defects are detectable. Our systems deliver 5mm/pixel — exceeding TR 78 minimums.
Defect Classification
Standardised taxonomy covering structural cracks, delamination, sealant failure, corrosion, water ingress, and panel displacement. Each defect graded by severity.
Report Documentation
Structured report with annotated imagery, defect location maps, severity ratings, and remediation recommendations. Ready for PE endorsement and BCA submission.
Our TR 78 Inspection Process
Document Review and Planning
We review drawings, facade specifications, and previous records. Flight paths are planned for complete coverage. CAAS permits obtained.
Site Assessment
On-site evaluation of flight conditions, obstacle mapping, GPS quality, and safety zones. Special attention areas identified from building geometry.
Systematic Data Capture
CAAS-licensed pilots execute planned patterns capturing high-resolution RGB and thermal imagery across all elevations. Real-time monitoring ensures no gaps.
Analysis and Classification
Engineers review every image, classifying defects according to TR 78 taxonomy with location coordinates, severity grades, and photographic evidence.
Report Compilation
Final TR 78 compliant report includes executive summary, methodology, defect register, annotated elevations, and remediation recommendations. Delivered in 3-5 days.
TR 78 Compliant vs Non-Compliant Inspections
| Aspect | TR 78 Compliant | Non-Compliant |
|---|---|---|
| BCA acceptance | Accepted for PFI submission | May be rejected |
| Methodology | Standardised, documented | Ad-hoc, variable |
| Image quality | Defined GSD minimum | Inconsistent |
| Defect classification | Standardised taxonomy | Subjective descriptions |
| Report format | BCA submission-ready | Non-standard |
| PE endorsement | Compatible | May require rework |
Choosing TR 78 compliant inspection from the start avoids BCA rejection risk and re-inspection cost. Every inspection we conduct follows TR 78 as standard.
Who Needs TR 78 Drone Facade Inspection
- Building Owners — meet PFI obligations with a faster, safer method accepted by BCA.
- MCSTs and Managing Agents — reduce costs for condominium inspections with more detailed defect documentation.
- Professional Engineers — receive TR 78 compliant data packages ready for review and endorsement.
- Facility Managers — integrate inspection data into maintenance programmes with precise defect locations.
- Contractors — use reports to scope repair works accurately, reducing variation orders.
Frequently Asked Questions
Singapore Context — Why This Matters
Singapore's built environment presents unique challenges for building inspection. With over 14,000 buildings subject to periodic facade inspection requirements, the scale of compliance activity is significant. The tropical climate — UV index consistently above 10, humidity averaging 80 percent, heavy monsoon rainfall, and constant thermal cycling from air conditioning — accelerates facade deterioration faster than in temperate climates.
The combination of ageing building stock and aggressive environmental conditions means facade defects develop faster and can progress to safety-critical levels more quickly than building owners expect. Tiles that might last 30 years in a temperate European climate may begin delaminating within 15-20 years in Singapore. Sealants rated for 20-year service life may fail in 10-12 years under constant UV bombardment.
This is why Singapore's regulatory framework mandates periodic inspections and why the quality of those inspections matters. A thorough drone inspection that identifies early-stage delamination allows preventive maintenance at a fraction of the cost of emergency repairs after tiles have fallen. Thermal imaging that detects moisture infiltration behind cladding prevents the progressive structural damage that unchecked water ingress causes over years.
For building owners and MCSTs, investing in quality inspection data from CAAS-licensed drone operators is not just about regulatory compliance — it is about protecting asset value, ensuring occupant safety, and managing long-term maintenance costs effectively. The buildings that are well-maintained and well-documented command higher market values and lower insurance premiums than those with incomplete inspection histories.
Getting Started — Next Steps
Whether you are preparing for your first periodic facade inspection or looking to switch from traditional methods to drone technology, the process begins with a simple conversation.
- Contact Us — WhatsApp 9669 3006 or email enquiry@droneinspections.com.sg with your building address and inspection needs.
- Receive a Fixed Quote — we reply within 2 hours with a transparent, all-inclusive price covering permits, inspection, and reporting.
- We Handle Everything — from CAAS permits to PE coordination, we manage the entire process. You receive a BCA-ready report within 3-5 working days.
- Plan Ahead — CAAS permits take 2-4 weeks. Contact us at least 6 weeks before your BCA deadline for smooth compliance.
Get a Free Drone Inspection Quote
Tell us about your building or asset. We reply with a fixed-price quote within 2 hours. No obligation.