Abstract
This study sought to develop an urban model for a commercial area in the city center by linking BIM and GIS through visual programming to evaluate the sunlight in the urban space and to create a good sunlight environment through parametric studies. The linkage between GIS and BIM made it possible to easily visualize the analysis results and provide feedback for the optimal urban model. The use of Dynamo enabled the rapid creation of a wide-area sunlight evaluation model by hierarchy from geospatial information, and the parametric study was realized through repeated feedback.