There is no hint for dangerous houses, and I can only find them when I click to view them, and the materials used to repair the building are more than the materials needed to build a new one? This is not scientific.
There is also the time and probability of building problems is not too fast, some buildings I feel have just been built, and within a few years they will need to be overhauled
Building structural integrity has a few bugs right now (already reported) but you can relocate the building onto itself and it only costs labor to complete. This will repair your building. This is a known exploit though and will likely get fixed when they fix the problems with integrity and repair functionality.