The MRTR Istanbul project is located in Merter, one of the busiest districts in Istanbul. It is nested next to the highway as a mid-rise building on an approximately 5800 sqm site. The building is aligned with the site borders, consolidating the area as a single block, consisting of 7 mini blocks and 4 inner courtyards.The sustainable design strategy consists of the following: natural ventilation via strategic openings, maximum daylight useage, sunlight collection and control as a renewable energy source, plus a green and public space for social sustainability use. Photo voltaic panels are used to capture sunlight as a sustainable resource for energy and also to protect users from the high noise and wind of the site.As for additional social land use, an elevated garden is accesible for users, creating valuable public space, which is exteremly difficult to find in the neighborhood. Courtyards existing on the elevated garden are strongly connected to the entry with escalators and elevators, whereas outdoor green spaces are easily accessible public spaces. The green rooftop reduces CO2 emissions and balances heat levels. Rainwater harvesting is another key element for the overall roof design.