Property Data API
The Golden Address Record
Complete property context for any Dutch address: building attributes, valuations, neighbourhood stats, and environmental risk.
BAG-anchored identity
WOZ valuations with history
CBS demographics and income data
Livability and environmental risk scores
The Golden Record
Enrich any address or postcode with reliable data from official sources like BAG, Kadaster, and CBS.
- Official BAG Registration ID
- WOZ Value History
- Energy Label & Insulation
{
"bag_id": "0363010000xxxxxx",
"building": {
"year_built": 1905,
"usage": "residential",
"surface_area": 85
},
"valuation": {
"woz_value": 545000,
"reference_date": "2026-01-01"
},
"energy": {
"label": "C",
"index": 1.25,
"valid_until": "2030-05-15"
},
"neighbourhood": {
"code": "BU03630401",
"livability_score": "excellent"
}
}Ready to build with Dutch property data?
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