With extra accommodation now near the top, if not the pinnacle, of the property shopping list for many house hunters, the expected feature to tick that box might be a converted loft, a garden cabin or a transformed garage - or at least the potential to update or add one of these.
But most homes cannot boast a substantial two-storey coach house at the bottom of the garden, but this beautiful period house in the posh suburb of Llandaff, Cardiff is not most houses.
Not everyone who lives in the capital realises that the city is peppered with cute coach houses, hidden most commonly on the lanes that meander through the older areas such as Cathays and Roath. Many of these surviving buildings are small and seemingly randomly located at the end or side of the lane.