Legal term
[Portugal] Ot: Altura da edificação
The height of the building is the vertical dimension measured from the threshold level to the highest point of the building, including the roof and other built volumes on it, but excluding chimneys and accessory and decorative elements, plus the elevation of the threshold, when applicable.1
[Prague] Ot: výška budovy
Regulated building height is defined as the distance measured vertically from the lowest point of the adjacent terrain to the level of the main cornice. The level of the main cornice is defined as the intersection of the external face of the wall and the top edge of the roof or top edge of the attic. In the case of buildings on a slope, height can be stipulated separately for parts of buildings.2
[Ascoli Piceno] Ot: Altezza massima degli edifici (H MAX)
The maximum between the heights of the different parts of the elevation into which the building can be divided, measured as from the ground line to the roof line, considering the set back structures. In the case of elevations in which there are inclined roof pitches (gabled, staggered or single-pitched), the maximum height is considered to be that corresponding to the intersection of the elevation walls with the plane corresponding to the extrados of the roof pitch, provided that the ridge does not exceed the height measured in this way by more than 1.80 m, otherwise the maximum height is measured at the ridge line. If the roof slopes coincide with the sloping walls of the elevations, the maximum height must always be measured to the ridge line. For buildings on land with a natural slope greater than 15%, the maximum height permitted by the town planning instruments, unless more restrictive prescriptions of the same, may be exceeded by 20% in the downstream parts of the elevations, with an absolute maximum of 2.00.3
facade height | front wall height
1: Decreto Regulamentar n.º 5/2019, de 27 de setembro
2: Prague Building Regulations
3: Regolamento Edilizio Comunale