Housing

So Helpful: A Map of Housing Prices at Every London Tube Stop

People can figure out what it'd cost to live at different points of their commute. Your city needs something like this. 
Reuters

In a big city, it can be tough finding an affordable apartment near work, especially if you want to use public transit to commute. A new map tool developed in London is making that search a little easier. Created by the apartment search website Find Properly, the tool reproduces the London Tube map, with rental and house prices (and links to property listings) detailed for each station. Click on the station, and the map reproduces the different prices at each stop along the line, creating a graph that sometimes looks like rolling hills and sometimes like a set of alpine peaks and chasms.

(If you're having any trouble seeing or using the embedded map above, click here for the full version)