The ‘living area’ includes all spaces higher than 2 metres which in terms of physical structure are not only meant for storage.
The ‘other indoor spaces’ include:
- all spaces of which the highest point is between 1.5 and 2 metres;
- all spaces which are partly lower than 2 metres and partly, but not exceeding an unbroken 4,0 m2, higher than 2 metres;
- storage spaces, for instance a cellar, shed or garage;
- a storage attic inaccessible by fixed stairs but with ladders or folding staircase as its access, and/or an attic without sufficient daylight (window less than 0.5m²) or an attic that has no accessible floor.
Exact definition described in NEN 2580 (only in Dutch).