Ok, serious answer is going to be between 8 and 24 sqft average.
You will need planning for this if you are going to remove the stack.
You will likely require other structural work
If this side adjoins another property there will be party wall issues
It is probably not cost effective.
You will need planning for this if you are going to remove the stack.
You will likely require other structural work
If this side adjoins another property there will be party wall issues
It is probably not cost effective.
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