The answer is not really, according to a new World Bank report on urbanization in Tanzania.  A summary of the report from Brookings notes that only 35 – 45% of the land in the country’s urban centers is being used in accordance with their master plans.

I thought the graph below did a good job making the differences in land use clear.  Notably, large percentages of land intended for other uses have been repurposed for agriculture and housing.