Abstract: A system and method for designing, visualizing, pricing, and generating specifications for custom building components to be installed onto a structural surface such as an outer wall of a building. The system may be a web server accessible by a web browser and having a computer program stored thereon for accessing information related to building components from a database. The computer program may also receive from a user a selection of a type of building component to customize from the database, as well as surface parameters for the structural surface and user-selected parameters to be applied to a building component of the selected type. The computer program may display a visual depiction and a cost of the building component having the user-selected parameters. The computer program may also generate specifications for fabricating and installing the building component having the user-selected parameters.