Are you going to build? Deciding on the size of the house? Then you must have come across the term built-up area at the building office. What is it anyway?
In general, we can say that the sum of all built-up areas of individual buildings is called the built-up area of the plot.
Built-up area of the land in terms of the law
Section 2(7) of the Building Act states, “The built-up area of a plot is the sum of all built-up areas of individual buildings. Whereby the built-up area of a building is the area bounded by the orthogonal projections of the outer face of the perimeter structures of all above-ground and underground floors into the horizontal plane. The areas of loggias and bay windows are included. For semi-enclosed buildings (without some external walls), the built-up area is defined by the envelope lines drawn through the outer faces of the vertical structures to the horizontal plane. In the case of roofed buildings or parts thereof without perimeter vertical structures, the built-up area is defined by the rectangular projection of the roof structure into the horizontal plane.”
It follows that the built-up area of the plot includes both the area of the house and the area of other buildings with perimeter walls. However, the so-called paved areas are not included.
Percentage of built-up area
The built-up area of a plot of land is a guarded figure that regulates the density of development by superior documentation, such as the municipality’s zoning plan. It is a determination of the maximum percentage of land built-up with buildings. The buildability coefficient is most often between 25-40% of the total land area.