Artificial Intelligence systems receive two dimensional representations (e.g. physical or electronic documents) that are processed to mimic the perception, learning, problem-solving, and decision-making formerly performed by human workers. AI analysis is repeated for multiple two dimensional representations over time, each two dimensional reference including a change to a design of a building to be constructed. The AI processes denote and track changes made in the sequence of two dimensional references and extrapolate changes to materials and labor that relate to the changes in design of the building to be constructed.