What you can do, is create a different AP group for each building. You can then run the WLAN Wizard for each building, create the same wireless network name, except that it will be in a different AP group and have a different VLAN.
Why you don't want to do this: It is much easier to determine where a user is located based on what AP they are associated to, than what VLAN they are in. If a user is attached to StedmanHall-room330, it means much more than figuring out where 192.168.4.x. is located.
As an example, all users can be placed into a single or a few common VLANs where the buildings are connected by high speed switching. It will save on wasted ip address spacing from assigning too many subnets to a building. It will also make it easier to configure if you have to renumber subnets.