In the "Phase II: Draft project" section, you must complete the details for the "Building data" section.

In the "Building type" section, the program offers three options: detached, semi-detached and corner. This is an important factor, as the building type determines the layout and design of the floors, façades, external walls and internal partitions.

Under the "Building geometry" option, you can choose from the five levels of geometric complexity offered by the program. The complexity of the floor plan often results in a loss of performance, so it is a significant factor.

It is also essential to enter the following details correctly:

1. Number of floors above ground level
   This refers to the total number of habitable storeys located above the level defined as ground level. Spaces located below the ground floor slab and those with a height of less than 1.5 m should not be included.
2. Number of floors below ground level
   This refers to the total number of habitable floors located below the level defined as ground level. Floors that are not entirely below ground level, such as semi-basements, should be treated as floors above ground level, as they have windows and other features characteristic of a façade.
3. Percentage of openings in the façade
   This is the ratio of the area of all external openings to the total area of the external envelope, as viewed from the outside; in other words, it includes the area occupied by the floor slab, walls and external columns.

Finally, the "Partition grade of the floors" section specifies the level of compartmentalisation. This parameter affects the costs in the section relating to internal partitions and cladding.