A method for generating a three-dimensional model of a building includes providing a processor, receiving an indication from a user for a two-dimensional path for a wall, and retrieving parameters for the wall from a database. The method also includes determining that part of the wall may be constructed using a prefabricated component and preparing, using the parameters for the wall and the path for the wall, a model for the prefabricated component for use in construction of the wall. The method further includes preparing, using the processor, a three-dimensional model of the wall using the two-dimensional path, the parameters for the wall and the model for the prefabricated component and adding the three-dimensional model of the wall to a model of a building.