Shape grammars are systems of transformational rules that describe the design of a shape. Most studies towards the application of shape grammar are analytical in describing a specific building style. The main part of this research will describe a comparison of the rule systems and rule structures of four different grammars: the Prairie house, Queen Anne house, Palladian villa, and Malagueira house. This comparison leads to a generic rule system that can be used as basis for creating an own grammar. Based upon the transformation of a predefined grid, different sections will be created based upon the orientation.