Basement Walls

They can be block, propriety blocks eg ‘ Benex’, brick, concrete, “Redi Wall” for the external walls. Internal walls can be timber walls , and the inside skin of external walls can be framed up out of timber stud work.

Depending on climate [ temperature and humidity ] you can make a call as to wall material type and then insulation consideration. Water, humidity, ventilation are key points to investigate before construction materials are selected for incorporation in the design.