Building within existing structures is becoming an increasingly significant area of work for everyone involved in construction. The renovation of existing buildings and the modernization of fire protection systems are considerably more complex than new construction. The building regulations applicable at the time of construction are particularly important in this context. This work allows you to determine whether the construction practices encountered in existing buildings complied with the building regulations in effect at that time. As more time passes since the building was erected, it becomes more challenging to identify binding legal regulations. Furthermore, as buildings age, the likelihood increases that no usable approval documents are available. The manual contains original texts of the most important building regulations for North Rhine-Westphalia from 1962 to the present day. You will receive all texts compiled in one work, saving you the very labor-intensive and extremely time-consuming individual research.