[hbossy]

Parking space is the most important limiting factor around here. Making more than 4-5 stories on typical city plot requires adding a second level to underground garage, which skyrockets the building costs. Creating an underground level is few times more expensive than normal one and cost rises exponentially for each story. Cities typically require 0.5 - 1.5 parking spaces per apartment, so you have to make them and convince customers to pay extra or else you loose money holding lots of unused space that require constant maintenance. For the same reason Honk-Kong-style micro apartments are unheard of in Europe.