I would want to know what sort of people live in the area, so an up to date demographics tool would be useful. I would want to know where the local schools are, and when I click on a particular property I would want to know in which catchment area it is - accurate information is vital. I want to know which shops are on the high street, and how far the train/bus/tubes are. I want to know the crime rates. If the property being sold says drive available with planning consent I want to know which houses on the street already have it so I know its possible. The list is endless!!!! Or maybe I'm just fussy!!