I think a more important question to me is how much does the prefabricated parts already contain, as in does it make the construction complete.
Usually the walls, roof, windows and doors are fairly quick and easy to get in, the other half of the cost goes into the rest of the detail. This includes carpets, light fittings, plugs, plumbing, tiles, carpets, cupboards, curtain rails, kitchen bits, skirting boards, toilets, towel rails, etc. and all the labour involved in setting that all up.
I can see great potential gains in doing this off site in an assembly line type fashion instead of inside of a building.
Usually the walls, roof, windows and doors are fairly quick and easy to get in, the other half of the cost goes into the rest of the detail. This includes carpets, light fittings, plugs, plumbing, tiles, carpets, cupboards, curtain rails, kitchen bits, skirting boards, toilets, towel rails, etc. and all the labour involved in setting that all up.
I can see great potential gains in doing this off site in an assembly line type fashion instead of inside of a building.