In article ,
Roland Perry wrote:
The bedroom furthest from the living room is almost ideally placed to be
a staircase.

are they big enough for a largish stairwell?

Big enough for a secondary *emergency* staircase, in addition to the
existing main staircase. Or if you need more room, then sacrifice the
2nd bedroom from two adjacent flats.

And do the flat layouts align on every floor to make it doable? And
would the new stairwell have communal access?

Yes and yes.

However, the biggest problem is breaching the concrete floors all the
way through the 24 floors, and making sure the sides of the stairwell
are isolated from the flats.

It would almost certainly be cheaper and better to demolish and start
again.

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*Prepositions are not words to end sentences with *

Dave Plowman London SW
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