Spacing Out

Like everyone else has said, it really depends on the building. I like to make sure all of my public buildings have enough parking, and depending on the building some of them get more land for decorations (like a playground for the elementary school, justice statues at the courthouse, etc.) My houses all have fenced in backyards. Looking at my SF, I seem to have 3 coloured houses per 2 plots of land, and 5 brown houses per 2 plots of land. My other buildings don't really have any consistency to them though. Some are grouped together, others get their own block.

I use up a lot of land for my event buildings though. My CoC area is 12 plots of land (it's like a LARP/camp ground), and my Stonecutters, Halloween, and Christmas areas use 6 plots of land each.