We framed all of our walls with 35x75mm timber. They are all screwed together with 75mm wood screws. The timbers are actually really light weight and only cost 1.75 per meter.
All of our windows and front door was a total of 640.00 dollars. They are all doubled glazed and were purchased from Brown Sparrow recycled building materials here in Christchurch. The Stainless steel counter top was 100.00 from the same place.