Cities and municipalities own a large number of public buildings to be able to deliver their services. Cities and municipalities don't have a good overview of the state of their buildings which makes an efficient management difficult. Ad hoc decisions relocate the public functions to new built administrative centres, leaving heritage buildings in need of renovation, empty. A need exists for an efficient allignment of the municipal needs on the one hand and the available buildings and sites on the other hand. Using this methodology creates a long term vision that municipalities use to make the most efficient and profitable decision leading to economies and a more efficient use of public means.