- Burgess's Concentric Zone Model (1925) describes urban land usage in terms of concentric rings spreading out from the Central Business District (CBD). - The zones are: 1. CBD (Central Business District) 2. Zone of Transition (Industry and poor-quality housing) 3. Zone of Independent Workingmen's Homes (Older, modest houses) 4. Zone of Better Residences (Newer, more spacious houses) 5. Commuters Zone (Suburbs, beyond the contiguous built-up area)