The term “sustainable” relates to a concept called the "Triple Bottom Line” (TBL): People, Planet, and Profit (the three P’s), endorsed by the United Nations in 2007 for urban and community accounting.
American suburban land planning is about the SBL (Single Bottom Line): Profit. In city after city, mindless cookie cutter subdivisions, with characterless architecture, serve cars more than people. This dysfunction is caused by the boiler-plate regulations; engineers adhere to the minimum dimensions mandated by city ordinances to gain density, which maximizes developer’s profits. read more »