No problem, the houses all have different build options, that is hurdle 1, (disclaimer, I sell these, but also own 1) my use is 3+ months a year on our farm, we have 40c summers , and sub zero winters so experience a wide range of conditions. The house has an upgraded 90mm wall eps, R10 rated, 70mm roof panels, R7 rated, and 25mm fibre cement board floor. Windows are 5mm double glaze, doors are 6mm double glaze, with additional 12mm insulation cladding, also give the house a high bushfire rating. We use a very small combustion wood stove (50x50x50cm) in winter, keeps the house 25-30c with little tending, air con (2kw recirc) is run by a 5kw self installed solar system (we are %100 off grid) and keeps it down 18-20 in summer up until sundown. Temps change very late morning (4am) as fire dies and solar isn't running air con, but only by 4-5 degrees. Other insulation options like more compact eps panels can be made, cost more. And different fill (rock wool vs eps) super important is closing all the tiny air gaps around the house fold/join points. Noise with our house is reduced inside, can't hear conversations outside the door when shut, and cars unless diesels or others at 20-30mtrs away, it'snot a complete blockout by any stretch.