Methods for generating a floor plan from a building scan of a building using an electronic computing device are presented, the method including: causing the electronic computing device to receive the building scan; converting the building scan to a floor plan; and refining the floor plan to approximate the building. In some embodiments, the causing the electronic computing device to receive the building scan further includes: extracting information from an input file to obtain a representation of a number of rooms and walls corresponding with the building scan, where the information is selected from the group consisting of: a set of vertices, a set of triangles, and a set of rooms.