Define "setback" in the context of site planning.

The definition of "setback" in site planning refers specifically to the required distance between a property line and a building or structure. This regulation is essential for ensuring adequate light, air, and privacy for both the building occupants and neighboring properties. Setback requirements can vary based on the zoning regulations of a particular area and may be influenced by factors such as building height, land use, and the architectural style of nearby structures.

By maintaining these designated setbacks, municipalities aim to create a cohesive urban environment, manage land use more effectively, and enhance public safety by providing clear boundaries for construction. This concept is crucial in promoting orderly development and balancing the interests of property owners with community needs.

The other options do not accurately capture the essence of a setback. For instance, the distance from the road to a property line pertains to right-of-way considerations, rather than actual structures. Height restrictions near roads speak to regulations aimed at controlling the vertical extension of buildings, while designated green spaces focus on areas reserved for parks and natural landscapes rather than structural placement. Thus, the best interpretation of "setback" remains the mandated distance between a property line and any building or structure, aligning with zoning and planning objectives.