US company Digital Map Products, which lists redfin.com, zillow.com, and trulia.com amongst its clients, has released a new mapping tool that visualises how home prices change over time.

The product, dubbed SpatialStream, animates property price fluctuations as colours on a map, changing from green to red as prices fluctuate. The company says this is an easy way to show what would otherwise be thousands of separate data points on a spreadsheet.