Read: Sarah Susanka - More Not So Big Solutions for Your Home

A good primer of Sarah Susanka's principles for making the most of small houses. It was written as a series of magazine articles originally, so it has a very readable format of small chunks of information, and enough repetition for the principles to sink in. There are definitely aspects of Christopher Alexander's design principles at work here, but they are more concretely defined, and practically instituted than in his "A Pattern Language".