The design of Hengam residential project is derived from the free-form concept of Iranian architecture. The starting point of this project looks back at Iranian tile works, using filled and empty surfaces, special patterns, and also the exceptional architecture of the Kabootar Khaneh s. On the other hand, using light patterns influenced by candles which are lit in some religious ceremonies in holy places, create attractive and irregular light forms. Using light patterns in the stairways of the building, results in the creation of asymmetrical light designs inside and outside of the building in different times of the day. This play of the light during the day creates beautiful spaces inside the building, while the light is reflected from the outside, and during the night the building gives a sense of authenticity while the light reflects out. In the configuration of materials that divide the façade of the project, the top part of the façade uses white stone with wood, and in connection with the floor, dark stone with wood is used. Also attention to the skyline, and considering the height of the surrounding buildings has a remarkable effect on the attractiveness of the project. In the design of different parts of the building, such as the façade, parking, stairways, rooftop, interior design, and the courtyard, the attempt was to pay attention to the details, while reducing the total cost of the project using recycled materials from the previous building. The recycled materials include bricks from the fireplace, rooftop, courtyard, parking, and stones from the demolition of the former house to build the courtyard, and the pond, and remaining metal layers to build the water facade in the courtyard.