The responsibility for public construction law in Germany is divided between federal and state governments.
Zoning law (Bauplanungsrecht) is federal law. It determines the purpose for which a property may be used and whether a building project fits into its surroundings.
The federal states are responsible for building regulations law (Bauordnungsrecht), which determines how buildings may be designed and constructed in order to meet planning law requirements. Each state issues its own building regulation. However, most of the states have adopted a specimen building regulation issued by the state ministries which also makes provision for certain standardization within this field.