The Suburb Rent Growth for Commercial Real Estate is a new automatic process that re-uses online advertising data to generate data tracking movements in commercial property lease prices for suburbs and for commercial property types. The invention relies on the characteristic of Commercial Real Estate that it is, basically, a commodity market with a very large number of sellers and buyers. This is unlike residential property which has many more variables than just size determining its price. The invention provides a unique low cost, timely and reliable method of automating a previously manual process. In addition the process removes any bias based on commercial incentives from those who provide the information that is used to measure price movements.