You must also keep in mind that this surface has intangible or impassable areas, such as walls, partitions, columns and other spaces that occupy an area in the house.
What is useful area?
After understanding the built area, you will have much clearer what is the Useful surface If you think simply like the entire area that you can step on inside the house and where you can place any kind of furniture.
The essential difference between useful surface and built area is that The first does not add the impassable areas of the secondso it will always be smaller, but will better reflect the effective space you have available in any house.
Another point to take into consideration is that a few meters that are part of the useful surface could be occupied by furniture that although it does not allow you to step on that surface, it is not counted as built. For example, a closet or closet embedded on the wall, a bar that serves as a breakfast in the kitchen or stairs.
An extra element: the surface built with common elements
In addition to the two previous concepts, if you are about to make you a department or condominium where you will share common areas with your neighbors, it is necessary to be clear about the definition of Surface built with common elements.
As its name says, in this category all the spaces that are part of the condominium, building or housing unit enter, such as gardens, patios, corridors and even parking lots. If you have doubts about this point, do not be afraid to carefully ask the status of the area built with common elements and what are the spaces to which it refers.