In the context of urban development, what does the term "density of development" refer to?

The term "density of development" primarily refers to the number of buildings in a given area. This concept is crucial in urban planning and architecture as it helps to determine how closely structures are situated to one another within a specific geographical space. High-density development often leads to a more compact urban environment, which can facilitate public transportation, reduce the need for automobile use, and promote walkability.

Density influences various aspects of urban life, including the availability of amenities, the efficiency of infrastructure, and the overall character of a neighborhood. It plays a significant role in zoning regulations and land use policies, affecting everything from housing availability to commercial viability.

In contrast, other options relate to different aspects of urban development. The amount of green space speaks to environmental considerations, elevated structures concern building height and topography, while types of materials focus on construction practices and aesthetics rather than the spatial arrangement of buildings. Each of these elements is important in urban design, but they do not directly define the concept of "density of development."