A Bruksnummer or Property unit number is the number for a bruk which is part of a geographical unit in the Norwegian land registry and serves as part of the Assessor's parcel number.
Each municipality is divided into a certain number of Gårdsnummers.
When a new property is established, it is assigned a new Bruksnnummer under the same Gårdsnummer.
A common way of writing a real estate designation is for example.
A bruksnummer can also be assigned a Festenummer and Seksjonsnummer number which can also be traded and pledged.