Let's agree on a term for this type of construction. Depending on a region or language you may find related terms such as: prefabricated houses, element homes, timber frame houses. All of them represent the same construction style and to make it shorter we will call a prefab house.
Wall Construction
Walls are built from a timber frame carcass, which is filled with the insulation material and covered with membranes (against wind and humidity).
How Prefab House Is Built?
A name it self suggests that the main house parts (walls, roof, floor) are pre-fabricated in the factory and shipped to the building site as panels.