General guidance, not an inspection or diagnosis. Repair advice has not been independently reviewed by a tradesperson. About this checker and safety sources.
What to do now
Keep people away from a wall that is rapidly moving, severely bulged or showing signs of imminent collapse.
Common causes
- Poor drainage behind wall
- Inadequate footing or reinforcement
- Age / timber decay
- Excess soil or surcharge load
The exact cause cannot be confirmed from a symptom alone. The first professional should inspect before repair work is authorised.
What usually happens next
- Assess wall height and movement
- Check drainage and loads
- Engineer repair/rebuild where required
- Confirm permits / boundary responsibility
What should I ask about the price?
Ask for an itemised quote covering the inspection or call-out fee, labour, materials, GST, access, disposal and any after-hours charge. Ask what happens if extra damage is found. A reliable price needs details of the actual job; this guide does not provide an estimate.
Who may be responsible?
Owner / neighbour / strata
Boundary retaining-wall responsibility can be legally complex. Confirm ownership and approvals before major work.
Tenancy, strata, insurance and boundary responsibilities vary by circumstance and state, so confirm responsibility before non-emergency work where practical.
Questions to ask before hiring
- Are you appropriately licensed or registered for this work in my state?
- Does the quote include call-out, labour, parts/materials, GST and disposal?
- What is excluded from the quoted scope?
- If you find additional damage, will you get approval before doing extra work?
- What workmanship or product warranty applies?
Run this problem through the checker, then contact a suitable professional of your choice.
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