Attic - recognized as a solid floor?

An attic usually has only a much smaller area, which can then be used as living space, as the floors below. Nevertheless, an attic can still be considered as a single storey under certain conditions.

State Building Code determines the rules

In the individual state building regulations the respective regulation is determined for full floors. The different building codes of the countries, however, are slightly different in their dimensions. We have therefore always given an approximate average here.

Full floor in the attic?

Most building codes provide bullets that tower at least 1.20 to 1.60 above the floor, on average. But more important is the proportion of living space or floor space, which has a normal ceiling height.

With an inclined roof, 75 percent of the base area must have a height of 2.30 meters. In a building with staggered floors, there must be at least two-thirds of the floor area, which are here 2.30 meters high.


Storeys or floors that are above the gutter, so the eaves are called the attic when they are located directly under the roof.

Development plan can be crucial

In some circumstances, even ancient land-use plans can still be considered effective today. Some courts have given precedence to the specifications of the calculation for full storeys from the zoning plans.

As a result, the state building regulations in some areas may be ineffective and the development plans may be valid. Even development plans which are already very old can therefore still be valid today for the calculation of the full storey.

Tips & Tricks

If the classification as a storey for your attic is important, but there may be some values ​​are not achieved so far, may be a larger bay or a dormer may bring in the last remaining living space, which then has a sufficiently large height.

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