The process of determining the floor area ratio involves dividing a building’s total floor area by the size of the land on which it is built. For example, a structure with 20,000 square feet of floor space on a 10,000 square foot lot would have a ratio of 2.0. This figure represents the density of building permitted on a specific parcel of land.
This determination is a crucial element in urban planning and development. It serves as a primary mechanism for controlling density, shaping the built environment, and influencing property values. Historically, municipalities have used this measurement to ensure adequate light and air circulation, prevent overcrowding, and maintain a balance between development and open space, thereby contributing to sustainable and livable communities.