CoStar Group has agreed to buy Vexcel Group for about $730 million in cash. CoStar is best known for commercial real estate data and the Homes.com and Apartments.com listing sites. Vexcel flies one of the largest survey-grade aerial imaging programs in the world. For open-source analysts, this is a change in who owns a major non-satellite imagery source. What CoStar is … [Read more...] about CoStar Buys Vexcel for $730 Million and Takes Over One of the Biggest Commercial Aerial Imagery Archives