Retaining Wall Collapsing
A garden retaining wall that is bulging, cracking, leaning, or has partially collapsed.
What Is Causing This?
- 1Water pressure building up behind the wall
- 2Inadequate foundations for the height of the wall
- 3Tree roots destabilising the base
How Urgent Is This?
This needs prompt attention. Delaying could cause further damage, safety risks, or significantly higher repair costs.
What Needs to Be Done
A landscaper will demolish the failed section, install proper drainage behind the wall, and rebuild with adequate foundations, weep holes, and reinforcement.
How Much Will It Cost?
National average estimate
Labour: £775 – £2,400 | Materials: £575 – £2,175
Enter your postcode for a local price estimate
Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
Find a Landscaper
Enter your postcode above to find local landscapers, or browse all landscapers.
Find a LandscaperWant a More Accurate Diagnosis?
Upload a photo of the problem and our AI tool will give you a detailed diagnosis, estimated cost, and connect you with local tradespeople.
Try Snap and FixStill Not Sure? Ask a Tradesperson
Post your question and get free advice from verified professionals who deal with this every day.
Ask a QuestionPlanning Permission Guidance
Some fixes for this problem may require planning permission or building regulations approval. Check if your project needs permission:
Generally permitted. Laying a patio or hard surface in the rear garden is permitted development as an improvement within...
DeckingGenerally permitted under Part 1, Class E of the GPDO (treated as an improvement within the curtilage). Decking that doe...
Swimming PoolGenerally permitted. Outdoor swimming pools are considered engineering operations within the curtilage and are permitted...
Garden RoomGenerally permitted under Part 1, Class E as an outbuilding. Garden rooms follow the same rules as other outbuildings. T...
How to Prevent This
Ensure retaining walls have weep holes for drainage. Do not plant large trees directly behind retaining walls. Monitor for early signs of bulging.
Related Problems
Patio slabs or sections of paving that have dropped, creating uneven surfaces and trip hazards.
A brick wall that has tilted or is leaning away from its original vertical position.
Water pooling on patios, paths, or near the house after rain, sometimes flowing toward the building.
Other Landscaper Problems
Standing water on the lawn or flower beds after rainfall, taking days to drain away.
A bumpy or undulating lawn with dips, mounds, and hollows that make mowing difficult.
Water pooling on patios, paths, or near the house after rain, sometimes flowing toward the building.
A garden that has become unmanageable with dense vegetation, overgrown borders, and self-seeded trees.