The project's spatial formation draws from two main concepts: "void" and "mass," each combined with the project's materiality. The ultimate goal is to create a replicable pattern for this type of residential apartments that can contribute to enhancing the quality of life in urban apartments and endow the project's spatial elements with a sense of sustainability. The project's materiality was formed based on two elements: Glazed brick for the void section, enhancing light reflection, and providing a unique lighting experience within the voids, Recycled stone with a grainy texture representing the project's residential volumes. One of the main goals of this project was to add spatial quality to the forgotten spaces in residential apartments and to create an open-air corridor inside the building to provide natural ventilation as well as a pleasing visual scenery between the semi open spaces of the building (balconies, staircase, and the interior void). The material palette in this project was formed around the idea of making use of the recycled stones from the mines around Tehran. Recycled stones in a variety of shapes and sizes were used in this project. The surface of the voids, on the other hand, are covered with traditionally made glazed bricks, made in electric furnaces, to promote the use of traditional and more sustainable methods in the production of building materials. The reflective characteristic of the copper glazed bricks significantly enhances the quality of the spaces in these voids.