UDA (Urban Design Associates) is one of the premier creators of pattern books for traditional developments, ranging from urban infill projects of a few dozen acres to revitilization distributed throughout an entire city to large greenfield developments such as Celebration, Florida.
In The Architectural Pattern Book, principals and staff members at UDA provide a historical overview of design instructions (back to Vitruvius in first-century Rome), tell how pattern books were revived in the past 30 years, lay out the purpose and structure of such guides and explain how to go about developing them.
In contrast to codes, which mostly attempt to regulate building, pattern books try to set out a vision that everyone on the development team will embrace and want to follow. They help assure successful marketing. As UDA assembles them, pattern books relate to the overall goals of a community or a development to the details of architects and contractors must master: placement of buildings on their lots, positioning of driveways and garages, selection of roof slopes, configuration of porches, proportions and dimensions of windows and doors, and so on.