I am just preparing to purchase a house that needs renovations done. If we can afford both we would like to redo the flooring to timber and also have built-in wardrobes installed. If we cannot do both we are considering just doing the wardrobes first and then flooring one or two years later. Is it possible to do it in that order? Or would we need to have the flooring done first and then the wardrobes installed on top of them?
I would recommend that any new walls, including those for built-in closets/wardrobes be done before the final finish flooring goes down.
You would want to build on the subfloor, nailing the sole plate of the wall down to the subfloor (preferably into joists below, if at all possible), and not having to worry about trying to cut through finish flooring in 10 or 20 years when you (or someone else) want to redo the floors again.