The wall lining is available from Bunnings it comes in a 2400 x 1200
sheet of 2.7 mm thickness and there are different types of finish I have just glued it to cheap plywood.
The cabinet with TV on came from Mitre 10 for $200 I made my own top for it out of chipboard and topped it of with click together flooring again from Mitre 10 its a gloss formica, you have to be careful to seal the joins to stop water from getting in. I built the Stove/Sink cabinet from scratch
as I couldn't buy one to suit the dimensions I wanted. All the trim is Tassie Oak

Noel & Jinny's Civilian $8800 fitout