Yogyakarta city is currently growing by giving space should Adjusting to the needs of an increasingly crowded city. Structuring the needs of this space that refers to the construction of a vertical building (highrise building). The design of this building in accordance with the bustle of the city increasing the service sector and services. Moreover, in the interest of investors to be able to contribute the best working space in the city of Yogyakarta. Rent office building design an workspace to meet the needs of the office in Yogyakarta. A building that functioned as a working space for office activities and services Financial services. Located in the area Timoho, Yogyakarta which is an area of Administrative structure of the city. The office is rented out to several financial services institutions and the like by using the concept of the theme of ECO-Office Design. The concept of ECO-Office Design on the design of office building lease is a movement of "Green Building" which can be a passive maintenance of the building applied. With reference to the aspects of Spatial Planning and Material. The purpose of this order spatial arrangement of space close to the sides of the building are open and exposed to the sun. Besides being able to be more optimal and more functional can also affect the psyche of workers in the room. Supported by the selection of materials that can create a positive effect in providing natural lighting into the room. So the need of spatial and natural lighting can be optimized on the building. The design of this rental agency to apply the method of data collection, the approach of designing, building and testing analysis. Rent office purpose is to overcome the problem of the working space requirements will be financial services in the town are relatively solid. Emphasis on spatial and material that can provide a positive contribution to the building for those investors who are looking for ease in finding work space that provides a good working facilities for its function as a commercial building. 
Keywords: Density, Rent Office, ECO-Office Design, Layout, Material