The building chapter uses available BAG information from the Dutch register of addresses and buildings. It may show the building year, registered area, use, status and object identifiers.

## Check what the record describes
A building and an individual dwelling are not always the same object. This matters for apartments, subdivisions, multiple house numbers and mixed-use buildings. Check the full address, including its suffix.

A registered area may differ from the measurement used in a sales listing. The original building year does not tell you when the roof, kitchen, installations or insulation were replaced. A registered use is not, by itself, permission for every proposed activity or alteration.

## Useful follow-up questions
- Which recent measurement report and floor plan apply to this home?
- What alterations were carried out, and what documents support them?
- Does the area refer to my unit or another part of the building?
- Have recent changes reached the register yet?

Ask the seller, estate agent or source owner to clarify a material discrepancy. See [reporting conflicting information](https://support.biedbril.nl/hc/biedbril/articles/en-incorrect-data-or-conflicting-sources) and [planning and permits](https://support.biedbril.nl/hc/biedbril/articles/en-planning-permits-and-listed-buildings).