Bodenflächenfaktor

Bodenflächenfaktor is a term used in building design and urban planning, particularly in German-speaking countries. It quantifies the ratio of ground-covered area within a property boundary to the total plot area. Essentially, it indicates how much of a plot is not covered by buildings or other impermeable surfaces. A lower Bodenflächenfaktor signifies a larger proportion of unsealed or green space on the property. This concept is closely related to concepts like "versiegelte Fläche" (sealed area) and "Ausnutzungsziffer" (utilization factor).

The Bodenflächenfaktor plays a role in various regulations, including development plans and building codes. Its primary purpose is to promote sustainable urban development by encouraging the preservation or creation of permeable surfaces. This helps with stormwater management, reducing the risk of flooding and improving groundwater recharge. It also contributes to mitigating the urban heat island effect by increasing vegetation and reducing heat absorption from paved surfaces. Furthermore, a higher proportion of unsealed areas can enhance biodiversity and the aesthetic quality of urban environments. Developers and planners use the Bodenflächenfaktor to assess the environmental impact of proposed projects and to ensure compliance with local regulations aimed at creating greener and more resilient urban spaces.