WOZ Waardeloket

Retrieve official WOZ property valuations for any Dutch address at scale: current value, full value history, land area, cadastral parcels and BAG building data, straight from the official government register. Bulk-capable, no API key required.

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Why this scraper?

🎯 Built for wozwaardeloket.nl

A dedicated Dutch scraper tuned for wozwaardeloket.nl — its categories, price formats and currency (EUR), not a generic tool pointed at it.

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Input parameters

Parameter	Type	Default	Description
addresses	array	[{"streetAddress": "Kloosterlaan 33", "postcode": "1216NH", "city": "Hilversum"}]	List of Dutch addresses to look up. Each entry must have streetAddress and postcode; city is optional but recommended for disambiguation.
maxConcurrency	integer	5	Maximum number of addresses processed in parallel.
proxyConfiguration	object	{"useApifyProxy": true, "apifyProxyGroups": ["RESIDENTIAL"], "apifyProxyCountry": "NL"}	Proxy settings for WOZ API calls. Defaults to Apify RESIDENTIAL NL. The WOZ API (Kadaster) requires a Dutch IP address.

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Output schema

Every field below is present on every record. Fields the source does not publish for a given item are returned as null rather than omitted.

Field	Type	Description
address	string	Full resolved address string
streetAddress	string	Street + house number
postcode	string	Normalised postcode
city	string	City from BAG register
gemeente	string	Municipality name
lat	number	Lat.
lon	number	Lon.
nummeraanduidingId	string	BAG nummeraanduiding identifier
adresseerbaarobjectId	string	BAG verblijfsobject identifier
wozObjectnummer	string	Kadaster WOZ object number
wozLatestValue	number	Most recent WOZ value in euros (null if not a WOZ object)
wozLatestYear	number	Assessment year of the latest WOZ value
wozValues	array	Full history array, newest first
building.bouwjaar	number	Construction year
building.oppervlakte	number	Floor area in m²
building.gebruiksdoel	string	Permitted use (e.g. woonfunctie)
building.status	string	BAG registration status
building.pandId	string	BAG pand (building) identifier
scrapeTimestamp	string	Scrape timestamp.

Example record

{
  "address": "Kloosterlaan 33, 1216NH Hilversum",
  "streetAddress": "Kloosterlaan 33",
  "postcode": "1216NH",
  "city": "Hilversum",
  "gemeente": "Hilversum",
  "lat": 52.22007594,
  "lon": 5.13386319,
  "nummeraanduidingId": "0402200001552236",
  "adresseerbaarobjectId": "0402010001552237",
  "wozObjectnummer": null,
  "wozLatestValue": 450000,
  "wozLatestYear": 2025,
  "wozValues": [
    {
      "peildatum": "2025-01-01",
      "peiljaar": 2025,
      "waarde": 450000
    },
    {
      "peildatum": "2024-01-01",
      "peiljaar": 2024,
      "waarde": 402000
    },
    {
      "peildatum": "2023-01-01",
      "peiljaar": 2023,
      "waarde": 384000
    },
    {
      "peildatum": "2022-01-01",
      "peiljaar": 2022,
      "waarde": 368000
    }
  ],
  "building": {
    "bouwjaar": 1971,
    "oppervlakte": 143,
    "gebruiksdoel": "woonfunctie",
    "status": "Verblijfsobject in gebruik",
    "pandId": "0402100001486583"
  },
  "scrapeTimestamp": "2026-06-30T19:13:16.791Z"
}

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Examples

Search for Dam 1, Amsterdam:

{
  "maxItems": 100
}

Broad crawl with a cap:

{}

Larger run with a hard cap:

{}

Daily monitoring (run on a schedule):

{}

Schedule this input to run once a day in the Apify Scheduler to track prices, stock and new items over time.

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💰 Pricing

$1.49 per 1,000 results — you only pay for successfully retrieved valuation records. Failed retries are never charged.

Results	Cost
100	~$0.15
1,000	~$1.49
10,000	~$14.90
100,000	~$149.00

Flat-rate alternatives typically charge $29–$49/month regardless of usage.

Subscription tiers lower the rate further, down to $1.49 per 1,000 at the highest tier. Use the Max results cap in the input to control your spend exactly.

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Performance

Run size	Typical time
100 results	under 1 minute
1,000 results	2–4 minutes
10,000 results	20–35 minutes

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Known limitations

• Some fields (brand, condition, shipping) are only returned when the seller or source publishes them — expect null on a share of records.
• Prices and stock change constantly; records reflect the moment of scraping.
• Very large result sets are bounded by the source's own paging limits.
• Items can sell or be withdrawn at any time, so a small share of URLs may expire shortly after scraping.

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Technical details

• Source: wozwaardeloket.nl
• Coverage: everything the public search exposes, filterable via the input parameters above
• Retry: automatic retry on network errors with exponential backoff

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Need a custom scraper?

Unfenced Group builds Apify actors for any website — for free.

If the site you need isn't in our portfolio yet, just ask. We scope, build, and publish it at no cost to you. You only pay for results — we absorb the compute and proxy costs ourselves. Same pay-per-result pricing, same quality, same standards as every actor in this portfolio.

Get in touch: www.unfencedgroup.nl