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Let’s see the cracks. It might just be normal shrinkage and settlement. Obviously the engineer will tell you properly but some amateur internet diagnosis is generally reliable.
Underpinning isn’t necessarily too disruptive. There are a few methods but it can be as simple as digging under the existing foundations hit-and-miss and pouring new, no internal disruption.
Hefty
villa-ru
Deep sigh. Have been some major cracks appearing in our extension. Presumably the dry summer (and giant willow nearby) has caused some subsidence. Also dodgy slightly cowboy builders.
Got an engineer coming round to have a look but not feeling confident about the outcome.
Has anyone had underpinning done? Any idea how disruptive and how eyewateringly expensive it's going to be?