What is the difference between floor-area ratio (FAR) and ground-coverage ratio?
The floor-area ratio (FAR) is the total gross building area on all floors of all buildings on a lot divided by the area of that lot. The ground-coverage ratio (which doesn’t have an accepted set of initials) is calculated by divided only the footprint of a building by the area of its lot. The FAR gives greater clues into the intensity of the land use. For example, two lots of 40,000 square feet each might each have a building with 10,000 square-foot footprints. This means that both will have ground-coverage ratios of 0.25, hence the footprint of each building takes up one quarter of its respective lot space. But one building is an eight-story office mid-rise while the other is a single-story office building. Both have the same footprint and ground-coverage ratios of 0.25, but the gross building area of the mid-rise is 80,000 square feet, while the gross building area of the single-story building is just 10,000 square feet. In the case of the mid-rise, its FAR is 2.0 (80,000 divided by
The floor-area ratio (FAR) is the total gross building area on all floors of all buildings on a lot divided by the area of that lot. The ground-coverage ratio (which doesn’t have an accepted acronym) is calculated by divided only the footprint of a building by the area of its lot. The FAR gives greater clues into the intensity of the land use. For example, two lots of 40,000 square feet each might each have a building with 10,000 square-foot footprints. This means that both will have ground-coverage ratios of 0.25, hence the footprint of each building takes up one quarter of its respective lot space. But one building is an eight-story office mid-rise while the other is a single-story building. Both have the same footprint and ground-coverage ratios of 0.25, but the gross building area of the mid-rise is 80,000 square feet, while the gross building area of the single-story building is just 10,000 square feet. In the case of the mid-rise, its FAR is 2.0 (80,000 divided by 40,000). The FA
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