Examples of various method and systems are provided for information generation from images of a building. In one example, 2D building and/or building element information can be generated from 2D images of the building that are overlapping. 3D building and building element information can be generated from the 2D building and/or building element information. The 2D image information can be combined with 3D information about the building and/or building element to generate projective geometry information. Clustered 3D information can be generated by partitioning and grouping 3D data points. An information set associated with the building and/or at least one building element can then be generated.