shirin residential building on a land of 561 square meters, located in Agha Zagheri Street, Tehran, includes: five residential floors on the ground floor and three basement floors. Due to the location of the project, which provided access from the north and south passages, the design group faced various design potentials and challenges, this building has two main views from the north and south passages, but this question is in the group's mind The design is formed as follows: How can you achieve a suitable plan in this project that will meet the needs of the project users in terms of functionality, and on the other hand, achieve a harmonious form and view on both the north and south sides of the building and be iconic in a way? In response to this question, the marking of the mass and space of the building was formed in a way that made it possible for us to define units in the north and south sections by placing vertical accesses and spaces in the central zone of the site, which this option including: separate lobby on the floors, suitable lighting for the spaces and removal of the common wall from the units can be mentioned as its important features. On the other hand, there were other challenges in the project, including: turning the project into an iconic and special view, maintaining harmony in two aspects, interacting and communicating with neighboring units, maintaining visibility and privacy, hence the decision. The design team decided to give a functional answer by separating the two public and private zones in the plan and facade, which was also crystallized in the project facade.