And here is the research:
The spatial layout of cities is an important feature of urban form, highlighted by urban planners but overlooked by economists. This paper investigates the causal economic implications of city shape in India. I measure cities’ geometric properties over time using satellite imagery and historical maps. I develop an instrument for urban shape based on geographic obstacles encountered by expanding cities. Compact city shape is associated with faster population growth and households display positive willingness to pay for more compact layouts. Transit accessibility is an important channel. Land use regulations can contribute to deteriorating city shape.
Here is the full paper by Mariaflavia Harari. “Transit accessibility” — what a funny phrase to apply to Mumbai traffic! Try some Marathi slang instead. And in case you are not familiar with Mumbai, some of the lower parts have some of the most valuable land.