B2B information. The $800m-revenue CoStar Group, a US-based global provider of commercial real estate information, analytics and online marketplace,s has acquired Realla, which bis claimed to be the UK’s largest public portal in commercial property. Launched in 2016 by founders Andy Miles and Ian Parry, Realla is a free-to-list search engine for commercial property. It displays the largest public index of available commercial real estate in the UK. Realla also offers a software product, called Realbase, which provides a dedicated, all-in-one commercial property marketing & data management platform for agents and landlords. Realla claims over 100 corporate customers across the commercial real estate sector. Transaction terms not disclosed.