Is it converted or designed like that? A lot of the new buildings I see are built from the ground up to be mixed use. One benefit I see is it helps cafes and su

Is it converted or designed like that? A lot of the new buildings I see are built from the ground up to be mixed use. One benefit I see is it helps cafes and such keep consistent customer numbers. Large blocks of office buildings have a lot of foot traffic during the week but become a ghost town during weekends. While large blocks of residential buildings do not have the same peak foot traffic to sustain a store.