What to look for
Concrete does not usually sink because the slab suddenly became heavier. Settlement typically begins with changes in the soil or fill supporting it.
Why the cause matters
Leveling treats the slab position and the unsupported space beneath it. If active erosion, plumbing leaks, irrigation, downspouts or major soil movement remain uncorrected, the same area can lose support again.
Questions homeowners ask
Is sinking concrete a foundation problem?
Sometimes the causes overlap, but a settled driveway or patio does not automatically mean the building foundation is failing. Structural symptoms inside the building should be evaluated separately.
Will the slab keep sinking?
It can if the underlying cause is still active. Good repairs address support beneath the slab and, where possible, correct drainage or water issues.
Next steps
Compare the repair methods and decide whether lifting or replacement better fits the condition of the concrete.