Local governments are responsible for preparing large scale maps for their urban planning areas.
These maps are used mainly as base maps for planning and management of public works of the central and local governments. Became standardized in 1975. Data for these maps are obtained through photogrammetric surveys purformed by the Geographical Survey Institute. Local governments then perform steroplotting, map compilation and drafting and revisions in accordance with the provisions of the Urban Planning Law. There is a minimum of generalization of building and house footprints.