For most people their home is their sanctuary, somewhere that is their safe space especially if they are suffering with poor mental health - not for Kate and we all know why.
The Hayes-Delameres have no real family space to relax in because she bastardised the house…. Daddy DIY could easily convert their loft (it’s a circa 1930s house so will have rafters and purlins rather than trusses) - they could make a massive room for the girls or maybe 2 smaller ones as his & hers closets for all their designer dupes.
Delo needs to get his tools out, then they can claim back the living room and stop ragging them kids around all over the place.