A method is provided. The method includes one or more of receiving, by an image processing device, one or more photos of building locations at a building, extracting position coordinates comprising X and Y values in a 2D floor plan from the one or more photos, converting the position coordinates into 3D model coordinates, extracting model viewpoints from a 3D model of the building at the 3D model coordinates, and comparing each of the one or more photos with a corresponding model viewpoint. Each of the model viewpoints provides a view of the 3D model at a same viewing position as one of the one or more photos.