I developed an application to create nice uniform building layouts with ease.
The project is hosted at google code: anno-designer at google code.
Bounding Box = 14x12 = 168 Tiles
Minimum Area = 132 Tiles
Space Efficiency = 79%
Bounding Box = 19x12 = 228 Tiles
Minimum Area = 198 Tiles
Space Efficiency = 87%