One of the things you need to determine for an urban growth model is how much more development capacity is available on a property. In some situations this can be easy to find. For example a property with a single detached house that can be demolished and replaced with multiple attached dwelling units. The challenge comes when a property consists of common property with multiple attached dwellings or commercial units.
The growth rates in this article published by New Republic on Chinese megacities seem quite unbelievable: In 12 Years, China Built More Houses Than There Are In All of the U.K. Take the example of Shenzhen growing to 12 million people in 30 years from a cluster of small fishing villages. This gives a compound growth rate of 20{1897c8b751ad578bd9a969480021909bcd327853590acbf66d5abd5e194cce96} per year, assuming a starting base of 50,000 people.
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Having developed the Forecaz Modeller and helped our customers use this tool to develop urban growth models, we have discovered there are very few Internet sites out there that aggregate and consolidate information on this topic.