The first boat we owned was ferrocement (similar to your house structure). We obviously had her structurally surveyed for fine line cracks but even for an old girl who'd done a lot of sailing (seawater is very corrosive) she was fine. My other half did a lot of research into ferrocement and so he knew what he was looking at. The only reason we sold her on was because we wanted something bigger with less draft (depth in the water). She was as solid as a rock though.
All houses can have structural problems. A lot of older London houses were built with hardly any foundations and suffer from subsidence and a lot of new builds aren't built to last. The last home we owned was a ten year old brick terrace but when four doors down started having problems, engineers found massive building defects. We knew after the first few days of moving in that there was little to no insulation in the internal walls because we could hear our neighbors having a pee
I wouldn't touch a new build with a ten-foot bargepole unless my other half had been around to watch the build.
If you purchased a steel concrete prefab, you would have had a survey to look for structural cracks?