Leaf: Buildings Dataset: BygningerOgBoliger (BBR) — Attributes
BBR is the national building and housing register. It carries detailed attributes but no native geometry. Geometry arrives via joins.
Spatial Access Path
bygning (building with attributes)
│ FK: bygning → grund → jordstykke (via Matrikel)
│ OR: bygning → adresse → husnummer → adgangspunkt (via DAR)
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Two routes to geometry:
Route A: grund → jordstykke.geometri (parcel footprint — approximate)
Route B: husnummer → adgangspunkt.position (point — geocoded)
Route C: Join to GeoDanmark bygning via shared identifier (precise footprint)
Entity Hierarchy
| Entity | Role |
|---|---|
| bygning | The building: use code, construction year, area, floors, heating |
| enhed | Dwelling or commercial unit within a building |
| etage | Floor level |
| opgang | Staircase / entrance |
| grund | Ground parcel the building sits on |
| tekniskanlæg | Technical installations (heating plants, solar panels) |
Key Attributes
| Attribute | Description |
|---|---|
byg_anvendelse | Building use code (residential, commercial, industrial, public) |
byg_opfoerelsesaar | Year of construction |
byg_areal | Area in m² (footprint, gross, net variants) |
byg_antal_etager | Number of floors |
byg_varmeinstallation | Heating type (district heating, gas, electric) |
Temporal Model
Bitemporal in BBR. GeoDanmark footprints are updated periodically (annual campaign). Historical building states via virkningFra/virkningTil in BBR.