Considering the astounding cost of building anything now, I guess being in the mitigation industry (retrofits, shoring-up and general can-kicking) will be rathe

Considering the astounding cost of building anything now, I guess being in the mitigation industry (retrofits, shoring-up and general can-kicking) will be rather profitable. But I can see at least some buildings being profitable even then. A modest London property can easily cost 500k, most of which is the land itself. If it lasts 100 years, that's "only" 5k per year, and you keep the land. Obviously the calculation is different if you're buying a 95-year-old concrete property, rather than building a new one. I imagine mortgage providers are paying attention, they already strongly dislike lending against steel-framed houses. I don't think we'll be seeing mass demolitions of 100 year old properties and infrastructure, except probably quite a bit of useless office space if RTO continues to not really happen over the next few decades. But we will see some very expensive and disruptive repairs-in-place to infrastructure when it can't be ignored any more.