Andarzgoo Office Building is a commercial and office complex, Located in Andarzgoo street ,one of the most lively street in Tehran. Due to importance of the building in the area we focused on finding a special solution for the façade that meets our climatically concerns towards designing a Green building that also has an impact on the viewers. We developed a parametric façade detail of geometric specifications which were driven by analysis feedback. To help control the amount of light entering each room, a facade system was designed through the use of parametric modeling. The depth of these elements will vary and will be optimized depending on orientation. Developed in Grasshopper, the skin takes into consideration an average arc of the sun throughout the year, specific to the site. The energy performance of the building will benefit in two additional ways from this strategy. As the panels fold in and out, the spandrel panel above is cutting off the solar radiation angle and therefore reducing the net solar gain that reaches the vision glass.