DIY Doctor UK DIY Forums

Hi folks,
Could anyone tell me if i were to get a build price for four flats would the m2 be calculated on the internal or external measurements?
Thank you in advance Simon

There's internal 'floor area', which is uses interior dimensions and includes multiple stories (so a simple construction can take one floor area and simply multiply it by the number of stories).
Then there's the building footprint, which use the external dimensions.

Depends what you need.