Morvarid residential project is located on a southern plot of land in Sa’adat Abad, Tehran. The site features a significant slope, and the project’s dimensions are proportionally about 1:4 in length to width. The design concept for this project was to create a geometric system on the northern and southern facades that could extend inward, defining the balconies and the internal division of the units. The generative geometry penetrates the spaces, shaping the interior of the project. Inspired by traditional Iranian architecture, the geometry of arches and vaults forms the design of the balconies and the interiors of certain rooms and public areas of the project. The issue of internal voids in such elongated projects usually poses a challenge. In this project, the void was approached in a way that maintained the required dimensions while maximizing natural light and minimizing overlooking between units. The internal void was designed as two connected rectangles positioned in the center of the volumetric space, ensuring no residential units directly overlook each other. The existing slope of the land presented an opportunity to design terraced green spaces on the lower levels. This approach allows southern light to reach all underground spaces and provides natural ventilation for these levels.