As far as public records go, real estate data can be quite the treasure trove. There are data brokers that collect, analyze, and resell this information all day

As far as public records go, real estate data can be quite the treasure trove. There are data brokers that collect, analyze, and resell this information all day long. For example, my startup can pull information on ownership, mortgage and sales history, liens, and foreclosure records, among many other things, for a given property. If you were to cross-reference the data with other public and proprietary sources, it could get pretty, umm... what's the right word?, "interesting", in terms of accuracy and level of detail.