Design and Construction within Existing Buildings Allplan 2009 Architecture enables alteration, demolition and renovations or re-development plans to be drawn up efficiently and quantities to be calculated quickly. This is made possible with the help of special CAD libraries served by graphic assistants. The libraries contain pre-defined components with the necessary attributes for new and existing buildings, demolitions and new buildings. In addition to providing greater clarity, these libraries also reduce organisational effort and ensure uniform office standards. As a system user, you'll benefit from rapid access and greater productivity when planning renovation work. Furthermore, by using Allplan 2009 Architecture, you'll be able to accurately plan the costs of alterations, renovations and re-development work on the basis of precise quantity calculations.