*You may have a total of 16 floors (counting ground level as the first floor)
*[[Carpentry]] is checked for planning each floor and building wooden floors, openings, staircases, walls, and fencesout of wood.
*The first floor always requires a skill of at least 5, even if the building plan has already been finalized by another character.
*[[Paving]] is required for stone floors, openings, and staircases.