{"slug":"factline-dev-v1-address-lookup-ed028b","title":"Netherlands address verification and geocoding (adres, postcode + huisnummer)","host":"factline.dev","method":"GET","resource":"https://factline.dev/v1/address/lookup","category":"code","description":"Netherlands address verification and geocoding (adres, postcode + huisnummer): send a postcode + house number or free text, get the official address from the national BAG register (does it exist, exact spelling), WGS84 latitude/longitude, BAG ids, municipality, province and CBS neighbourhood code. C","price_listed":0.002,"price_asked":null,"state":"effects","state_label":"Not tested: has real-world effects","checks_7d":0,"answered_7d":0,"latency_ms_median":null,"reported_calls_30d":3,"reported_payers_30d":2,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"house_number":100,"postcode":"2517AS"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"addition":{"description":"Optional house number addition, e.g. 2 or BIS","type":"string"},"house_letter":{"description":"Optional house letter, e.g. A","type":"string"},"house_number":{"description":"House number, e.g. 1","minimum":1,"type":"integer"},"postcode":{"description":"Dutch postcode, 4 digits + 2 letters, e.g. 3511LX","pattern":"^[1-9][0-9]{3} ?[A-Za-z]{2}$","type":"string"},"q":{"description":"Alternative to postcode: free-text address, e.g. 'Visschersplein 1 Utrecht'","type":"string"}},"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[],"description_full":"Netherlands address verification and geocoding (adres, postcode + huisnummer): send a postcode + house number or free text, get the official address from the national BAG register (does it exist, exact spelling), WGS84 latitude/longitude, BAG ids, municipality, province and CBS neighbourhood code. Cheap address validation for KYC, onboarding, delivery, CRM cleanup and real estate agents. Source: Kadaster BAG via PDOK.","last_updated":"2026-10-10T00:03:34.325Z","schemes":["exact"]}