Netherlands Property Check

Comprehensive Dutch property market intelligence. Combines BAG address data, WOZ tax assessments, energy labels, housing prices, and regional statistics into one call.

5 steps nl-property-check

What it runs

Dutch Address and Building Lookup
Source: Kadaster BAG API
Dutch WOZ Property Values
Source: CBS OpenData (85036NED)
Dutch Energy Label
Source: EP-Online (RVO)
Dutch Housing Price Index
Source: CBS OpenData (85773NED)
Dutch Housing Statistics
Source: CBS OpenData (83625NED + 82900NED)

The answer returns every step’s result, so your agent can show or check each one.

Inputs

Field	Type	Required	What it is
`city`	string	Yes	Municipality name (e.g. 'Amsterdam') — used for CBS stats
`postcode`	string	No	Dutch postcode (format 1234AB)
`huisnummer`	string	No	House number

How to call it

# Needs an API key. The whole check is charged once, at the listed price.
curl -X POST https://api.strale.io/v1/solutions/nl-property-check/execute \
  -H "Authorization: Bearer $STRALE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "inputs": {
      "city": "Amsterdam",
      "postcode": "1012JS",
      "huisnummer": "1"
    },
    "max_price_cents": 19
  }'

The bundle’s published example input.

Limitations

A free API key from Kadaster is required. Register at https://formulieren.kadaster.nl/aanvraag_bag_api_individuele_bevragingen_productie
From step: Dutch Address and Building Lookup
Only covers addresses registered in the Dutch BAG (Netherlands).
From step: Dutch Address and Building Lookup
WOZ values are municipality-level averages from CBS, not individual property assessments. Individual property WOZ values are not available via public API.
From step: Dutch WOZ Property Values
City name lookup covers ~30 major Dutch municipalities. Use gm_code for smaller municipalities (CBS municipality codes).
From step: Dutch WOZ Property Values
A free API key from RVO is required. Register at https://apikey.ep-online.nl
From step: Dutch Energy Label
Energy labels are mandatory for sale/rental but older buildings may not have one registered. Coverage is estimated at ~60-70% of Dutch housing stock.
From step: Dutch Energy Label
Housing price index is national (Netherlands-wide). For regional data, use nl-housing-stats or nl-woz-value.
From step: Dutch Housing Price Index
CBS publishes housing price data with approximately 1-2 month delay.
From step: Dutch Housing Price Index
Statistics are aggregated at municipality level, not individual property or neighbourhood.
From step: Dutch Housing Statistics
Sale price data is published annually by CBS. Most recent data may be 6-12 months old.
From step: Dutch Housing Statistics
City name lookup covers ~30 major Dutch municipalities. Use gm_code for smaller ones.
From step: Dutch Housing Statistics