New Building Regulation (N.O.K.). Clarification of basic definitions : e.g. pitch, open space, balcony, lightweight, temporary, detached structures. Analysis of basic building concepts: building use, building integrity and buildability of a plot of land, building factor, volume factor, unauthorised construction, building permit. Planted roofs, incentives for the creation of energy-efficient buildings and incentives for environmental upgrading and improving the quality of life in densely populated and urban areas.