When living in the big city, it is very difficult to find wide space for building a big house. To built a house in the narrow space needs different design and concept. This house in the picture is the one that is located in the big city. Although this house is in the big city with narrow space, it is very ideal and comfortable. It has two floors and around the house is completed with plants. On the main floor, a sequence of pivoting doors opens the house to the courtyard, while on the second floor, windows fold back and full-height exterior panels slide into walls. The roof of this house is flat, so that it can be used for some activities. Its exterior is clad with a living wall system on three sides, visually tying together the courtyard greenery with the planted roof. The yard of this house is not too wide, but the rooms inside are very wide and comfortable. The house features a high-efficiency combination boiler, which supplies both radiant in-floor heating and domestic hot water. This house is very ideal for the big family who live in the big city. Although it is not very luxurious, it is very comfortable to live.