Electrical conduit and boxes are cast into the panel, greatly reducing wiring labor. All electrical components must be added. Electrical conduit and boxes are usually added after walls are erected. Interior panel walls require painting only. Paneling or sheetrock is totally optional.
Interior walls require sheetrock plus finishing work, or paneling.
Interior walls usually require sheetrock plus finishing work, or paneling. No exterior sheeting required. Exterior sheeting required. No exterior sheeting required. Exterior can be finished with stucco.