I've been thinking about the office building in which I worked pre-pandemic. It's actually not that wide and could be converted into a residential tower without

I've been thinking about the office building in which I worked pre-pandemic. It's actually not that wide and could be converted into a residential tower without cutting any holes in it (we had about 5 metres worth of desks, then 3 metres of walking space around the building core housing the elevators, fire escapes and conference rooms), but the ceiling height would be an obstacle. A typical flat is 2.7m tall, 3m is a premium height. The office had ceilings that were at least 3.5m tall to absorb the noise of the open space.