This graph shows average asking prices for houses listed on the Rightmove web site for two regions from 2008 onwards. The solid lines are houses in Hemel Hempstead, Hertfordshire. The dotted lines are houses in Braintree, Essex. Line colour indicates the number of bedrooms. Red - 5 bedrooms. Black - 4 bedrooms. Magenta - 3 bedrooms. Cyan - 3 bedrooms. The size of the circles indicates the number of houses used to calculate the average value at that point.