Cognised existence: A cadastral parcel is the legal unit of land ownership. It exists because a surveyor measured it and a governance authority registered it. It has a boundary, an identifier, an area, and an owner.
Question: What are the legal boundaries and ownership of land?
What is a Cadastral Parcel?
Each cadastral system defines unique parcel identifiers within one or more cadastral districts. The parcel boundary is the legal division of land, independent of what grows on it or what buildings sit on it.
Realisations
1. Matrikel — Parcel Geometry and Identity
Matrikel is the authoritative cadastral register.
Spatial Access Path
jordstykke → geometri (polygon — direct, no joins needed)
Cadastral parcels carry their own polygon geometry directly. The jordstykke entity IS the parcel with its boundary.
Entities
| Entity | Role |
|---|---|
| jordstykke | The parcel: boundary polygon, area, matrikelnummer |
| ejerlav | Cadastral district grouping parcels |
| skelforretning | Boundary survey event (provenance of the boundary) |
Key Attributes
| Attribute | Description |
|---|---|
matrikelnummer | Parcel identifier within the ejerlav |
ejerlavskode | Cadastral district code |
registreretareal | Registered area (m²) |
geometri | Parcel boundary polygon |
2. Ejerfortegnelsen — Ownership
Ejerfortegnelsen links parcels to their owners (persons and organisations).
Spatial Access Path
ejerforhold (ownership record)
│ FK: → jordstykke (via BFE-nummer or matrikelnummer + ejerlavskode)
▼
jordstykke.geometri (from Matrikel)
Ownership itself has no geometry — it inherits from the parcel. 2 levels of joins to get from ownership to space.
Classical Theme References
| Standard | Theme | Link |
|---|---|---|
| ISO 19115 | Planning/Cadastre | Cadastre |
| INSPIRE | Cadastral Parcels | |Cadastral Parcels |
| UN-GGIM | Land Parcels | |Land Parcels |
Temporal Model
Bitemporal. Parcel boundaries change through subdivision, merger, and resurvey — all tracked with virkningFra/virkningTil.
Realised By Links
- Matrikel (collection)
- Ejerfortegnelsen (collection)
- Bygninger og boliger (collection)
Realised By Links
- Matrikel (collection)
- Ejerfortegnelsen (collection)
- Bygninger og boliger (collection)