Identify what is actually shared
Walk the estate and list every space that more than one occupier uses or passes through: entry paths, common corridors, shared washrooms and showers, kitchenettes, stairs to upper units, bin bay, loading apron and any external area within the property boundary. Note who has keys to each and who currently cleans it, which is often nobody. This list is usually longer than expected and it is the reason estate presentation slips even when every unit is well kept.
Then separate the areas by who controls them. Some belong to the owner or estate manager, some are effectively controlled by one tenant despite being common, and a few sit in genuine dispute. Recording that distinction is the difference between a scope that can be instructed and one that generates argument, because the contractor needs a single person able to direct the work and approve any change to it.
