Shapes Grammar are rule-based systems that generate new forms through computational or other means. These grammars define how shapes can be transformed, allowing for mutations in form, function, material, aesthetics, and construction. The creation and responsibility for these grammars lie with the designers themselves. The primary purpose of grammars is programming, establishing specifications that limit a particular language to create a final grammar. However, grammars and computers are viewed as supplementary tools for architects and urban planners, with their usefulness dependent on the specific problem and how designers integrate them with other available tools. The potential of Shapes Grammar lies in their exploration as an alternative to conventional design methods, serving as an auxiliary tool for formal design. Understanding their interaction with specific software types is crucial to realizing their true utility. Building Information Modeling (BIM) has the potential to significantly impact and transform the grammar of forms in architecture and urban planning. By introducing greater precision, real-time updates, automation, and integration of various factors, BIM enhances the capacity of shape grammars to generate more complex, adaptive, and responsive designs. This integration is likely to lead to new design methodologies that combine traditional design rules with computational power, offering unprecedented levels of creativity and control.