The design process for this project was initiated with a rigid constrain which was to have a fixed number of 4 units per floor. This constrain limits the area of each unit to 70-85 m2. Therefore, the main design intention was to add a layer of quality to the spaces and make them look more spacious. Operable boxes were implemented on the façade. Using low cost mechanical railings, these boxes could slide 24 meters outward, creating a balcony for the residents to enjoy a private semi-open space without altering the actual unit area. Implementation of the mechanical railings are cost efficient and are feasible to implement. This was a collaborative project of multiple clients with different needs. Therefore, the selection of units in which to implement this feature was based on the desire of the clients. The main façade of the building is a combination of brick and glass which gives a variable richness to the interior atmosphere of the units during day and night. The operable boxes, on the other hand, are made of painted steel.