Houston's lack of formal zoning (citywide anomaly)

Houston is the largest U.S. city commonly described as lacking a formal, citywide zoning code; instead it relies on deed restrictions, development ordinances, and targeted land-use regulations. This absence of traditional zoning has produced a dense mix of residential, commercial, and industrial uses across the city and is frequently cited in urban planning literature. Debates about whether Houston truly lacks zoning continue, but its regulatory approach is widely regarded as an outlier among major U.S. cities.