What is characterized as light trespass?

Light trespass refers to unwanted or intrusive light that spills over from one property to another, which can cause issues such as decreased property value, disturbance to residents, and negative impacts on the natural environment. This phenomenon often occurs when outdoor lighting systems are not properly designed or installed, allowing light to escape its intended area and affect neighboring properties.

This concept is particularly relevant in urban and suburban environments where residential areas are in close proximity to commercial or recreational lighting. The goal of effective landscape architecture includes minimizing light trespass to enhance quality of life for residents and preserve nocturnal wildlife habitats.

In contrast, inadequate lighting in public spaces addresses issues of safety and security rather than unwanted light reaching other properties. Similarly, outdoor lighting illuminating wildlife habitats can contribute to ecological concerns but does not specifically address the definition of light trespass. Glare in roadways pertains to visibility and safety rather than the concept of light moving across property lines. Therefore, the characteristic of unwanted light entering adjacent properties is accurately defined by light trespass.