Waddon kitchens
The kitchens we meet in Waddon
Splashback and upstand work in Waddon is not one job repeated, because the kitchens here are not one kind of kitchen. Mostly inter-war semis with a square-ish rear kitchen and a side passage, where the usual upgrade is knocking through to the dining room for an L-shaped kitchen with a peninsula. Newer flats near Purley Way have small developer-spec galleys. You will get a firm figure for your Waddon kitchen once it has been templated, and that figure does not move afterwards.
Where the side return has been filled in, one side of the new room is old brick and the other is new blockwork, and the two do not behave alike. Socket positions, sill heights and wall flatness are the three things that settle this, and all three are properties of the building. A chimney breast breaks a panel run regardless of the drawing.
A radiator sits under the rear window on the outside wall, and moving it is plumbing that belongs before the template rather than after it. A return onto the extension wall is cut as its own piece, because the two walls are rarely in the same plane. A bowed wall is what decides between an upstand and a panel.
On these streets the housing is 1930s semi, inter-war estate housing, post-war terrace and modern flats off Purley Way. Each of those puts the services somewhere else, and the cut-outs follow.