The PropertyData Google Chrome extension shows a sidebar on Rightmove, Zoopla and OnTheMarket listings pages.
Data points including £/sqft, yield and growth are shown. Sourcing category information is also shown where applicable, along with quick links to PropertyData's Plot Map, Local Data and Valuation tools.
There's no better way to start making data-informed decisions when evaluating potential investment properties.
Additionally, this extension adds quick links to PropertyData Plot Map and Local Data tools into Google Maps.