I've been playing the newly release SimCity 2013 for about a day but I'm really struggling with increasing my population with completely covering almost every inch of the map.
While income is not a problem I cannot seem to increase the happiness of my residents enough to encourage upgrading to a higher density. I have the proper roads in place, i.e. a medium density street to support medium density. However, all residence just stay as low density. Adding parks, sportplex, services (fire, police, health), results in an increase in land value and the residence simply upgrade to a higher wealth residence (i.e. mansion) and the population remains low.
What is the key to encouraging density growth, i.e. to get my low density residence to upgrade to apartments, without causing land value to sky rocket?