For this project, we were commissioned with designing a house for a family with one adult kid who were all in loved with nature and greenery. The narrow piece of land (7*20) which was blind from the east and west, and the maximum of 8meters height from the ground were among the restrictions placed on the project. The design divides the volume to the closed (private space) and open (public space) parts on different level, also for equally allocating natural light and ventilation to any space the mass divided by two yards in length. tossing the solid cubes in space led into gaining skylight in lower level and perceiving the house bigger. In spite of introverted shape toward the neighbors the users would experience an exogenous inner space.