Which principle is highlighted in the concept of the Neighborhood Unit?

The concept of the Neighborhood Unit, formulated by planner Clarence Perry in the early 20th century, emphasizes the importance of accessibility to amenities within a community. This principle advocates for the design of urban neighborhoods that are self-sufficient, with essential services such as schools, parks, shops, and public transportation easily reachable by walking or short trips. This design fosters a sense of community, encourages social interactions, and enhances the quality of life for residents by reducing reliance on automobiles and promoting walkability.

In contrast, while environmental sustainability is a relevant consideration in modern planning, it is not the primary focus of the Neighborhood Unit concept. Similarly, vertical living spaces and floating city designs represent specific architectural and urban approaches that do not encapsulate the foundational idea behind neighborhood units, which centers on creating cohesive, accessible communities with integrated services.