Luke insulation is widely used here. Batts of fibre will be layed on the ceiling itself. Rolls of foil-backed fibre are sometimes used directly under the steel sheeting especially in large sheds without a ceiling.
that is a pretty big wall to build around your home. Maybe for privacy with a lot of glass facing the street.....maybe it also doubles as protection from a wayward auto on a busy street coming through their living room. I assume we'll see some shrubbery soon to hide the wall.
The wall will be cement rendered to match the house. The wall is built in "Fastwall" bricks - cheap and nasty and never left exposed.
I agree about the 'trim' on the house - bit of a 'dog's dinner' and will date very quickly.
The block is small but plot ratios have been rising and the Aussie dream of a 1/4 acre block with a big back yard is a thing of the past. The right-hand of the shot below shows what the house was like before the rebuild.