Optimal daylighting opportunities depend upon a building’s position on a site relative to available
daylight, horizon obstructions, orientation, andbuilding form. The quality of daylight, its effects on
illumination, and solar position for passive heating and control of cooling loads are of particular importance
to the designer. Site obstructions such as neighboring buildings, trees, and landforms will
determine the maximum available daylight on a site and the maximum project envelope that will
preserve daylight access to adjacent properties