The lead attributes the problem to a bad stone from a particular quarry. But later it turns out that many homes using the same materials but with a different builder are not affected. Nor are numerous public buildings, also using the same concrete. Sounds like a bad builder and/or, per the story, a problem with the home inspectors. Interesting liability question.
Of course, this is in Connecticut, where they are helpless lefties. If it were Indiana, everyone would know that duct tape would fix it good.