We have a local disaster in that hundreds of homes and businesses were built using concrete that contained an impurity that causes the pour to disintegrate… after a decade. We were lucky (our house was built in that era, but the contractor used another provider), but it’s a statewide emergency that is being petitioned for federal relief. WTF do you do with a (newer, expensive) 2-story house built on a crumbling basement/foundation? The answers are not clear. A lift, re-excavate and re-pour can approach $200k. Even staged excavate/repour by section can approach $100k and may not be possible in all cases.