It uses the UK Environment Agency's laser height surveys (the Welsh Government's in Wales), combined with streetmap, elevation and land registry data. The Beckenham semi at the end of the video: https://kerbsight.co.uk/address/br3/76-kings-hall-road-br3-1ls/ (you'll need to scroll down a little to reach the 3d garden card - and it's only shown on houses we are confident we know the plot for at the moment, so flats and shared plots won't show the garden). Or you can search any address from https://kerbsight.co.uk The 3D render can be dragged to turn it, you can scroll through the time and pick any day of the year. Below/next to it there's a chart of how much of the garden is in sun through the day. Would really appreciate any feedback/ideas you have.   submitted by   /u/Kerbsight   to   r/SideProject [link]   [comments]