Why finishing per dwelling needs so much information
Up to the shell, the dwellings of a block are often identical. After that, they are not. One buyer chooses a different kitchen, another a walk-in shower or made-to-measure cupboards. Each of those choices brings its own drawing, its own extra cost and its own appointment with the fitter.
A choice that comes in late holds up the finishing. A kitchen drawing that has not been approved means the kitchen cannot be ordered. And an option agreed verbally gets lost before the final account.
With IRP in Lean ERP you record the finishing as the steps of a process, with per step the drawings and choices that belong to it, at dwelling level. Below is an example of such a step plan. You can model your own processes in IRP.