Room height

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The room height is the clear height in a room between the upper edge of the floor and the lower edge of the ceiling . The term is used in construction , especially in building law , to define minimum requirements for lounges .

In old half-timbered houses there are sometimes room heights of less than 2 meters. Wilhelminian style apartments, on the other hand, were built in extreme cases with ceiling heights of up to 4.5 meters.


In Austria, the minimum room heights are stipulated in the state building regulations of the federal states, usually they are at least 2.50 m for common rooms, at least 2.40 m for single-family, two-family and terraced houses, in lofts it can be lower, with at least the air space must be the same size as a horizontal ceiling. The clear room height of rooms other than lounges can also be below it, whereby these too must have a sufficiently large volume of air. However, the clear room height must not be less than 2.10 m.


In Germany, the minimum room heights are specified in the state building regulations of the federal states. In the model building regulations and in most federal states, it is 2.40 m for common rooms, but the regulations range from 2.20 m to 2.50 m and allow exceptions for common rooms in small residential buildings and on top floors.

Storage rooms and storage rooms do not count as common rooms and can have correspondingly lower ceiling heights. Laundry rooms are also usually not viewed as common rooms.

Prescription examples:

Schleswig-Holstein State Building Regulations 2009: Common rooms must have a clearance height of at least 2.40 m [until 2007: “... over at least two thirds of their area ...”]. Lounges in the attic must have a clearance height of at least 2.30 m over at least half of their area; Parts of the room with a clear height of up to 1.50 m are not taken into account when calculating the floor area.

Thuringian Building Code 2014: Common rooms must have a clear ceiling height of at least 2.40 m. This does not apply to common rooms in residential buildings of building classes 1 and 2 and to common rooms in the attic.

Administrative regulation for the building regulations of North Rhine-Westphalia: The minimum clearance height of 2.40 m can be undercut in individual cases for ... common rooms (Section 73, deviations) if there are no concerns about the use. There are no concerns about use: (a) in residential buildings with no more than two apartments; a clear height of 2.30 m is generally acceptable here, (b) in the attic and in the basement; Here a reduction of the clear height to 2.20 m appears generally justifiable for small flats (apartments) and for individual common rooms that belong to an apartment on other floors, (c) for individual common rooms of an apartment.
There are reservations against falling below the clear height of 2.20 m with regard to usability, primarily because of health.

Recommendations for action to implement the Hessian building regulations: The "clear room height" is the distance from the finished floor to the lower edge of the finished ceiling. Individual components, such as beams or joists, do not limit the otherwise maintained clear height. However, this does not apply if z. B. the entire rafters or ceiling beams fall below the required clearance height. ... in individual cases it can be permitted that the minimum clear height of 2.20 m (extension dimension) required in the basement and attic storeys is not reached. The requirements for healthy living and working conditions, in particular with regard to lighting and ventilation, must be observed. This can e.g. B. by exceeding the minimum requirements set here (such as installing larger windows) or by limiting the exception to individual lounges. There are fundamental concerns about falling below the minimum clear height of 2.10 m. As a rule, deviations are only justified when expanding existing buildings.

While DIN 277 only requires that areas used as living space with a height of less than 2 meters are shown separately, according to the Living Area Ordinance, only half of these are counted towards the living space and areas with a height of less than 1 meter are not counted at all .

Architectural history

The brick buildings erected in Hamburg between 1948 and 1966 usually have a ceiling height of 2.2 meters. From the 1960s onwards, the ceiling height in new buildings was usually 2.4 meters or more. Urban apartments built up to the beginning of the Second World War often have ceiling heights of 3.3 meters and more.

See also

Individual evidence

  1. Living room heights in comparison
  2. State building regulations of the State of Schleswig-Holstein §48
  3. ThüBO of March 13, 2014 §48
  4. Administrative regulation for § 48 BauO NRW
  5. ↑ Recommendations for action for the implementation of the HBO 2011 (HE-HBO) of January 22, 2004 (StAnz. P. 746), updated: October 1, 2014
  6. Old and new buildings: ceiling height ; In:; Accessed May 2020