Usually in a renovation design process one of the first main tasks of the architect is to distribute effectively the program of requirements (spaces with their corresponding areas) in the building. To do so the architect inserts in the existing floorplan the spaces in the form of circles; the so called “bubble diagram”. The purpose of this project is to propose a methodology to wave proximity relationships with illuminance requirements. The designer inserts existing geometry of the building in the software. An illuminance analysis of the room is performed so as to determine the ideal light locations for each room according to regulations. The user inserts the desired proximity and illuminance requirements of the rooms in the form of points and lines and prioritizes them. Given these inputs the goal is to place the rooms in positions that the objective function (potential energy) is minimized. The tool finds the optimal position of the rooms regarding proximity and illuminance requirements in the given boundaries without overlapping themselves by simulating it as a spring network and produces the bubble diagram. The diagram produced serves as the starting point for the designer to further develop the layout into a proper floorplan manually.