Check location and load buildings much less often
Instantiate all objects with the "new" keyword
Fetch buildings only in 1 km radius from location, not entire city
Use incoming location's kindly provided "latlng" property
Take max zoom value out of code and to the settings
Take geolocation timeout value out of code and to the settings
Better name for the buildings search radius variable
Better name for building fetching function
Slightly more correct method of returning nothing in CoffeeScript
Use the correct longitude property name of a LatLng object