one issue is that offices tend to have 1 bathroom per floor, and the internal plumbing to match, and apartments need roughly a bathroom every 4 rooms. That really matters when you have 15 floors and you’re adding inlet and outlets filled with water, it drastically affects the weight and design of the building.
it might be easier, cheaper and safer to demolish and rebuild rather than convert.
one issue is that offices tend to have 1 bathroom per floor, and the internal plumbing to match, and apartments need roughly a bathroom every 4 rooms. That really matters when you have 15 floors and you’re adding inlet and outlets filled with water, it drastically affects the weight and design of the building.
it might be easier, cheaper and safer to demolish and rebuild rather than convert.