I have a pretty normal sized surburban lot. Not much in the way of grass left here though. The one thing that really helps as far as what fits in here is that the yard is all multi level. It made it both a challenge and an opportunity. I could never have gotten everything here to fit if it was just the normal level lot. I have many raised beds and lots of terracing around here.
Plus I believe in intensive planting. Not much space between my plantings around here. It may not be for everyone. But believe me, it does work for me.
Here is a picture of a section of my front yard. Taken from the sidewalk. This is an illistration of my idea of a jumble of plants. I am still working on finishing this area but its not going to get anything different, the lily mass planting with be added to by having it runn forther down.