Methodology for Determining Tree Visibility from Apartments on Different Floors

Contemporary urban planning increasingly refers to pro-environmental standards, among which the 3–30–300 principle plays a significant role. One of its key assumptions is that at least three trees should be visible from every dwelling. However, a review of the existing literature reveals a substantial research gap: current analyses of green visibility are predominantly based on two-dimensional models, which fail to account for variations in the elevation of the observation point. This article introduces an original methodology for three-dimensional tree visibility analysis that explicitly incorporates building floor level as a critical factor shaping the resident’s visual perspective. The proposed approach integrates the determination of observation point locations, the modeling of architectural obstacles, and line-of-sight analysis within a 3D spatial framework. The results obtained for the selected test area indicate that only 16.3% of the analyzed windows provide a view of the required minimum of three trees. From 14.3% of windows, two trees are visible, while a single tree is visible from 27.4% of windows. Notably, as many as 42% of observation points offer no view of any trees at all.