The choice of an interior staircase is determined by a number of criteria. the most important perhaps of all is the prediction and disposition of the space in which it will be placed, so that with the spatial planning study that will be done, a staircase that is correct in terms of technical specifications will be designed which at the same time will ensure a factor of exceptional importance, functionality and comfort in its use. A key selection criterion is the frequency of use of the staircase, which depends on the spaces it connects (living room, attic, living room, bedroom, office, play-room, etc.). moreover, very important is the matter of aesthetics which is subjective, although by general admission the staircase should harmonize with the aesthetics of the rest of the space. Finally, a parameter that affects the final choice is the construction cost.

This dilemma is easily solved by the available space and its arrangement. If the space is small then the choice belongs to the orderly operation of the staircase and the rest of the spaces. If there is no space limitation then it becomes purely a matter of aesthetics and functionality.