Emergency Retaining Wall Failure
If your retaining wall has collapsed or is leaning badly, here's exactly what to do — in order — starting now.
1. Immediate Steps (First Hour)
If a retaining wall has collapsed or is visibly about to collapse:
- Step away from the area — falling masonry, displaced soil and debris are serious injury risks
- Keep others away — children, pets, neighbours
- Document immediately — photograph from a safe distance before anything is disturbed
- Check for service damage — look for exposed pipes or cables at a safe distance; if in doubt call your utility provider
- If the wall is on or near a road — contact your local council immediately; they may need to close the area
Do not attempt to prop or secure a collapsed wall yourself. Propping work requires structural knowledge and the right equipment.
2. Who to Call
In order of urgency:
- Emergency services (000) if there is injury, immediate collapse risk to a building, or utility damage
- Your home insurer — report the incident early; delay can complicate claims
- A structural engineer — for an emergency assessment and make-safe scope; RetWall can assist
- Your local council — if the collapse affects a road, footpath, or adjoining property
- Your neighbour — if the wall is a boundary wall or their property is affected
Contact RetWall for emergency engineering assessment →
3. Insurance and Documentation
Your insurer will need:
- Photographs of the failure and surrounding area (taken before any cleanup)
- An engineering assessment report identifying the cause of failure
- Evidence of when the wall was built and by whom, if available
- Any previous inspection reports or council permits relating to the wall
Insurance outcomes depend heavily on whether the failure is classified as sudden/accidental or as gradual deterioration. An engineering report that clearly describes the failure mechanism is essential.
4. Temporary Make-Safe vs. Rebuild
In most cases, a failed wall needs to be fully rebuilt rather than repaired. However, for insurance and council purposes, a temporary make-safe scope may be required to stabilise the site while the permanent solution is designed and approved.
Common temporary measures include: temporary fencing to exclude people from the hazard zone, installation of geotextile or tarps to manage erosion and water ingress, and, in some cases, steel propping — all designed by the engineer.
Understanding why walls fail →
Need an Engineer for Your Retaining Wall?
RetWall provides AS 4678-compliant structural engineering reports across Australia. Fast turnaround, fixed fees from $600+GST.
Get a QuoteFrequently Asked Questions
It depends on your policy and the cause of failure. Most home and contents policies cover sudden and accidental collapse. Gradual deterioration or failure due to lack of maintenance is often excluded. Call your insurer immediately and do not begin cleanup or repairs until they have been notified.
RetWall can typically arrange urgent site assessments within 1–3 business days for active failure situations. Contact us directly and flag it as urgent. For immediate life-safety situations, call emergency services first.
Yes, in most cases. Even rebuilding an existing wall to the same height and position will require a building permit if the wall exceeds the permit threshold for your state. An engineering design is required as part of that permit application.
Boundary wall failure liability depends on who owns the wall, whether it was maintained, and whether there was negligence. In most cases this becomes a civil matter. Document everything, engage a lawyer if the damage is significant, and get an independent engineering assessment of the cause.