rakennuslohkon

Rakennuslohkon is a building plot or building block within Finnish land-use planning. It designates a defined area in a detailed zoning plan (asemakaava) or master plan where building rights are allocated. A rakennuslohkon boundary specifies what can be built and under what conditions. In practice, planning documents group land into blocks; each rakennuslohkon has defined land use, maximum built area (kerrosala), allowable height, set-backs, and sometimes architectural guidelines or protected spaces. The rights attached to a rakennuslohkon come from the plan and the underlying cadastral parcel, and the rakennuslohkon can be sold or developed as a building plot, often marketed as a tontti with building rights.

The relationship between rakennuslohkon, tontti and kiinteistö varies: a rakennuslohkon may be subdivided into one or more tontit during registration in the land register. Building requires a permit (rakennuslupa) and adherence to the plan's specifications; changes to a rakennuslohkon typically require a plan revision or subdivision procedure handled by the municipality and the National Land Survey of Finland (Maanmittauslaitos).

In development contexts, describing a site in terms of rakennuslohkon helps planners and developers communicate about exact development potential. The term is common in municipal documents, real estate listings, and planning records across Finland.