Provides some very useful additional insight into property prices and rental values when looking at properties on Zoopla and On The Market websites and the ability to drill down into the details of the comparative properties to further gauge pricing. However, there seems to be a limit to the radius by which comparative properties are captured, commonly when looking at studio flats from my experience, and no comparison is provided. While it is understandable for average pricing purposes that only a limited radius can be considered, it would still be useful to see details of similar properties on the map, even if they are beyond the radius of what can be reasonably used for average pricing. Something is better than nothing. The pop-up side screen does have occasional glitches where it does not work and partly obscures the Google map feature on Zoopla. The pop-up side screen needs to be closed to access some of the Google map functions like street view. The On The Market website sometimes adjusts its screen size to accommodate the Property Data side screen pop-up and it would be great if this was a standard feature on all websites.