I design all kinds of landscapes and what I love most is that no two design are alike. Each design that I do is specific to the environment, the needs of the client and what the client can realistically afford.
In this case the clients wanted a drought tolerant garden using mostly California native plants, functional paths and various features to add interest to the garden. They also had a pad of concrete that was provided by the developer that was in really good condition that did not need to be removed.
This video shows the entire process of install and should give you a realistic view of what it takes to install a small back yard.