# Addresses and Buildings Register (BAG)

Every address and building in the Netherlands with year of construction, floor area and use. The backbone for anything linked at address level.

- Publisher: Kadaster, Publieke Dienstverlening Op de Kaart
- Area: Netherlands · Finest detail: address and building
- Period: 2009 – heden · Refreshed: daily
- Access: Open · Licence: CC0
- Join keys: BAG-id, postcode + huisnummer
- Status: grijs
- URL: https://www.kadaster.nl/zakelijk/registraties/basisregistraties/bag

## What can you do with it?
- **How old are the houses on your street?.** Every building has a construction year. Colour a map by year and see how the city grew.
- **Linking addresses.** Convert an address list to coordinates and neighbourhood code via the BAG. Then any list can be compared with CBS figures.

## Interesting combinations
- Which neighbourhoods build the most? → [cbs-kwb](https://www.opendataindex.nl/en/bron/cbs-kwb.md) via BAG-id → buurtcode. Count new buildings per neighbourhood and divide by existing homes.

## Similar sources
- [openstreetmap](https://www.opendataindex.nl/en/bron/openstreetmap.md): Also shops, amenities and paths, but not official.