What do you mean updates? Everything reverts to the land owner. Nothing is going to change that. The land is worth $100M+. At ~1700 co-op units, every share holder would need to come up with a minimum of $60,000 AND there would need to be a sell interest on the land owner's behalf to even tilt the odds into retaining ownership. Bottom line, that's not going to happen. The ground lease document is explicit: when the lease expires, all the improvements revert to the land owner. No renewals and no other rights given. The Nordheimer brothers should never have turned it into a residential co-op that had ~70 years left on a ground lease.