Living space is a crucial element in the sale and purchase of real estate. 
Its calculation is governed by law and differs depending on whether the accommodation is individual or collective. 
We explain how to calculate the living area of ​​your home.

Residential real estate: the importance of living space.
The calculation of the living area is governed by a standard which applies only to residential real estate. 
Only a tolerance of 5% more or less of the actual living area is accepted.
The purpose of this standard is to facilitate the transmission of information between the different parties: owners, buyers, real estate agents, etc. 
It makes it possible to calculate a purchase price per m² and thus facilitate the comparison of real estate prices between several houses. or apartments in the same neighborhood.

Calculation of living space in Luxembourg.
The living area corresponds to an intramural area. 
The measurements are taken at the level of the plinths.

Differences between living area and accessory area.
The calculation of the habitable m² of a house or an apartment excludes rooms not intended for habitation. 
We then speak of “accessory surfaces”.
These include:
• Common areas, technical rooms, cellars, garages and unheated verandas
• The m² of an attic room with a ceiling height of less than 2 m (only for collective housing)
• Unfinished attic and mezzanines
• Walls, pillars, partitions, elements under doors or under windows The living area (useful area) is limited to:
• Living rooms and sleeping areas: living room, dressing room, master bedroom, kitchen, etc.
• Bathrooms and shower rooms
• Circulation areas: corridors, halls, stairs, etc.

Calculation of living space For a non-collective residential property.
The calculation is made as follows: Living area of ​​a residence with a non-vertical cadastre = Living rooms + bathrooms + interior circulation areas.
In the case of collective housing, the calculation is as follows: Living area of ​​a housing with vertical cadastre = Usable area - (areas under slopes of less than 2 m in height + areas covered by partitions).
This standard was put in place so that each actor in the sale of real estate can carry out the calculation of the living space by himself. 
If you sell your home, your real estate agent will take the action.