Once subsidence has been confirmed, the right repair depends on the cause. The headline you want to remember is this: full traditional underpinning is the last resort, not the default. Modern UK practice starts with removing the cause, typically a leaking drain or a thirsty tree, and only escalates if the ground continues to move.
Stage 4 · Fix
How to Fix Subsidence, Repair Options Explained
Underpinning isn't the default. Most subsidence cases are solved with cheaper, less invasive methods. Here are every option, ranked.
Explore the guide
How much does subsidence repair cost?
Realistic UK price tiers by method and severity.
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Can subsidence be fixed without underpinning?
Yes, often, drainage, trees, resin, crack stitching.
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Underpinning a house
What it is, when you genuinely need it, the different types.
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How much does underpinning cost in the UK?
Detailed costs by method, property size and access.
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Resin injection for subsidence
The faster, less invasive modern alternative.
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Crack stitching
Repairing cracked brickwork with helibar reinforcement.
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Repair options for UK subsidence
Modern subsidence repair is a long way from the brutal underpinning of thirty years ago. The first job is always to stop the cause: remove or manage the problem tree, repair the failed drain, fill the void, or address the leak. Once the ground stops moving, the building can be stabilised and then made good. Skipping straight to underpinning without fixing the cause is the most expensive mistake a homeowner can make.
Common interventions include resin injection, which expands engineered polymer beneath the footing to fill voids and lift settled foundations within millimetres of their original level, crack stitching with helical bars to tie cracked masonry back together, beam and base underpinning for serious cases, and traditional mass concrete underpinning where the situation demands it. Each comes with its own cost, disruption, and warranty profile, and the right answer depends on the soil, the structure, and the cause.
Whichever route is taken, the works should be designed by a structural engineer and signed off in writing. Insurers expect a Certificate of Structural Adequacy on completion, and any future buyer will want to see the same. Keep every report, drawing, and invoice in a single folder, because it becomes the evidence pack that protects the value of the property for the rest of its life.
Common questions
How long do subsidence repairs take?
Cause removal and resin injection can complete in days. Traditional underpinning is weeks. Most projects, including monitoring, run over a few months.
What sign-off should I get?
Insist on a Certificate of Structural Adequacy from a chartered engineer on completion. Ask any contractor for the specific warranty terms they offer in writing, and check whether it is underwritten.
Will repair affect my insurance?
Once the cause is stabilised and certified, most insurers will continue cover, though premiums and excesses may reflect the claim history for a period.
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