When Selling:
Lets be honest, its so exciting moving to a new home, until your home becomes invaded by prospective purchasers that stroll around your pride and joy, questioning your style and opening your fridge, before stating that the layout doesn't flow for them.
A carefully chosen professional estate agent will include a floor plan in their marketing details. This will mean that when any potential purchasers make an appointment to visit your home, they will already have more information, and are likely to be much more interested. However they will still open your fridge.